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IPv4 Address Space

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In 2006, Randall Munroe published xkcd's "Map of the Internet". Since then, all available /8 blocks have been delegated to regional registries which are now allocating the final addresses. There is an updated version of this strip.

After delegation to a registry, a block of IP addresses is allocated to end users who, according to current guidelines, are supposed to advertise their addresses. The numbers of allocated and advertised addresses are visualized in the following images. They are generated automatically every day, detailed information is in the image map. Each regional registry is shown in a different color (see key on the right). Legacy blocks "Administered by <...>" are shown in grey, as well as corporate/government blocks.

The following image shows allocated addresses. The higher the number of allocated addressess, the lighter the color. Hover the cursor for details.

0: Reserved by the IETF (not available) 1: APNIC (since 2010-01), 15.604.736 addresses (93%) advertised, 1.172.480 (7%) assigned but not advertised, 0 (0%) available in pool 2: RIPE NCC (since 2009-09), 16.490.240 addresses (98%) advertised, 24.832 (0%) assigned but not advertised, 262.144 (2%) available in pool 3: Legacy (General Electric Company, since 1994-05), 64 addresses (0%) advertised, 16.777.152 (100%) assigned but not advertised, 0 (0%) available in pool 4: Legacy (Level 3 Communications, Inc., since 1992-12), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 5: RIPE NCC (since 2010-11), 15.830.272 addresses (94%) advertised, 523.008 (3%) assigned but not advertised, 419.840 (3%) available in pool 6: Legacy (Army Information Systems Center, since 1994-02), 601.088 addresses (4%) advertised, 16.176.128 (96%) assigned but not advertised, 0 (0%) available in pool 7: Legacy (Administered by ARIN, since 1995-04), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 8: Legacy (Level 3 Communications, Inc., since 1992-12), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 9: Legacy (IBM, since 1992-08), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 10: Reserved by the IETF (not available) 11: Legacy (DoD Intel Information Systems, since 1993-05), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 12: Legacy (AT&T Bell Laboratories, since 1995-06), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 13: Legacy (Administered by ARIN, since 1991-09), 4.002.304 addresses (24%) advertised, 12.774.912 (76%) assigned but not advertised, 0 (0%) available in pool 14: APNIC (since 2010-04), 14.027.008 addresses (84%) advertised, 2.754.560 (16%) assigned but not advertised, 0 (0%) available in pool 15: Legacy (Hewlett-Packard Company, since 1994-07), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 16: Legacy (Digital Equipment Corporation, since 1994-11), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 17: Legacy (Apple Computer Inc., since 1992-07), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 18: Legacy (MIT, since 1994-01), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 19: Legacy (Ford Motor Company, since 1995-05), 256 addresses (0%) advertised, 16.776.960 (100%) assigned but not advertised, 0 (0%) available in pool 20: Legacy (Computer Sciences Corporation, since 1994-10), 294.144 addresses (2%) advertised, 16.483.072 (98%) assigned but not advertised, 0 (0%) available in pool 21: Legacy (DDN-RVN, since 1991-07), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 22: Legacy (Defense Information Systems Agency, since 1993-05), 512 addresses (0%) advertised, 16.776.704 (100%) assigned but not advertised, 0 (0%) available in pool 23: ARIN (since 2010-11), 11.979.552 addresses (71%) advertised, 604.640 (4%) assigned but not advertised, 0 (0%) available in pool 24: ARIN (since 2001-05), 16.409.088 addresses (98%) advertised, 335.104 (2%) assigned but not advertised, 0 (0%) available in pool 25: Legacy (UK Ministry of Defence, since 1995-01), 2.048 addresses (0%) advertised, 16.775.168 (100%) assigned but not advertised, 0 (0%) available in pool 26: Legacy (Defense Information Systems Agency, since 1995-05), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 27: APNIC (since 2010-01), 16.227.584 addresses (97%) advertised, 514.816 (3%) assigned but not advertised, 0 (0%) available in pool 28: Legacy (DSI-North, since 1992-07), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 29: Legacy (Defense Information Systems Agency, since 1991-07), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 30: Legacy (Defense Information Systems Agency, since 1991-07), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 31: RIPE NCC (since 2010-05), 16.125.952 addresses (96%) advertised, 600.064 (4%) assigned but not advertised, 45.056 (0%) available in pool 32: Legacy (Administered by ARIN, since 1994-06), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 33: Legacy (DLA Systems Automation Center, since 1991-01), 2.816 addresses (0%) advertised, 16.774.400 (100%) assigned but not advertised, 0 (0%) available in pool 34: Legacy (Halliburton Company, since 1993-03), 1.048.576 addresses (6%) advertised, 15.728.640 (94%) assigned but not advertised, 0 (0%) available in pool 35: Legacy (Administered by ARIN, since 1994-04), 11.862.016 addresses (71%) advertised, 4.915.200 (29%) assigned but not advertised, 0 (0%) available in pool 36: APNIC (since 2010-10), 15.010.560 addresses (89%) advertised, 1.712.384 (10%) assigned but not advertised, 0 (0%) available in pool 37: RIPE NCC (since 2010-11), 16.268.032 addresses (97%) advertised, 462.080 (3%) assigned but not advertised, 38.912 (0%) available in pool 38: Legacy (PSINet, Inc., since 1994-09), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 39: APNIC (since 2011-01), 15.152.896 addresses (90%) advertised, 1.624.320 (10%) assigned but not advertised, 0 (0%) available in pool 40: Legacy (Administered by ARIN, since 1994-06), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 41: AFRINIC (since 2005-04), 15.359.744 addresses (92%) advertised, 1.120.512 (7%) assigned but not advertised, 8.192 (0%) available in pool 42: APNIC (since 2010-10), 11.452.416 addresses (68%) advertised, 5.324.800 (32%) assigned but not advertised, 0 (0%) available in pool 43: Legacy (Administered by APNIC, since 1991-01), 1.290.496 addresses (8%) advertised, 15.463.168 (92%) assigned but not advertised, 1.024 (0%) available in pool 44: Legacy (Amateur Radio Digital Communications, since 1992-07), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 45: Legacy (Administered by ARIN, since 1995-01), 7.903.488 addresses (47%) advertised, 1.298.432 (8%) assigned but not advertised, 3.854.080 (23%) available in pool 46: RIPE NCC (since 2009-09), 16.465.664 addresses (98%) advertised, 607.744 (4%) assigned but not advertised, 16.384 (0%) available in pool 47: Legacy (Administered by ARIN, since 1991-01), 10.706.944 addresses (64%) advertised, 6.070.272 (36%) assigned but not advertised, 0 (0%) available in pool 48: Legacy (Prudential Securities Inc., since 1995-05), 0 addresses (0%) advertised, 16.777.216 (100%) assigned but not advertised, 0 (0%) available in pool 49: APNIC (since 2010-08), 15.055.616 addresses (90%) advertised, 1.721.344 (10%) assigned but not advertised, 0 (0%) available in pool 50: ARIN (since 2010-02), 16.581.632 addresses (99%) advertised, 195.584 (1%) assigned but not advertised, 0 (0%) available in pool 51: Legacy (Administered by RIPE NCC, since 1994-08), 2.823.168 addresses (17%) advertised, 13.954.048 (83%) assigned but not advertised, 0 (0%) available in pool 52: Legacy (Administered by ARIN, since 1991-12), 15.440.128 addresses (92%) advertised, 1.337.088 (8%) assigned but not advertised, 0 (0%) available in pool 53: Legacy (Daimler AG, since 1993-10), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 54: Legacy (Administered by ARIN, since 1992-03), 9.105.408 addresses (54%) advertised, 7.671.808 (46%) assigned but not advertised, 0 (0%) available in pool 55: Legacy (DoD Network Information Center, since 1995-04), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 56: Legacy (US Postal Service, since 1994-06), 69.632 addresses (0%) advertised, 16.707.584 (100%) assigned but not advertised, 0 (0%) available in pool 57: Legacy (Societe Internationale de Telecommunications Aeronautiques, since 1995-05), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 58: APNIC (since 2004-04), 16.439.808 addresses (98%) advertised, 340.992 (2%) assigned but not advertised, 0 (0%) available in pool 59: APNIC (since 2004-04), 12.218.624 addresses (73%) advertised, 4.557.568 (27%) assigned but not advertised, 0 (0%) available in pool 60: APNIC (since 2003-04), 16.599.296 addresses (99%) advertised, 177.920 (1%) assigned but not advertised, 0 (0%) available in pool 61: APNIC (since 1997-04), 16.276.736 addresses (97%) advertised, 500.480 (3%) assigned but not advertised, 0 (0%) available in pool 62: RIPE NCC (since 1997-04), 15.951.872 addresses (95%) advertised, 952.320 (6%) assigned but not advertised, 22.016 (0%) available in pool 63: ARIN (since 1997-04), 16.650.496 addresses (99%) advertised, 126.720 (1%) assigned but not advertised, 0 (0%) available in pool 64: ARIN (since 1999-07), 15.874.304 addresses (95%) advertised, 805.376 (5%) assigned but not advertised, 0 (0%) available in pool 65: ARIN (since 2000-07), 15.910.912 addresses (95%) advertised, 849.920 (5%) assigned but not advertised, 0 (0%) available in pool 66: ARIN (since 2000-07), 16.374.272 addresses (98%) advertised, 454.912 (3%) assigned but not advertised, 0 (0%) available in pool 67: ARIN (since 2001-05), 16.169.216 addresses (96%) advertised, 599.808 (4%) assigned but not advertised, 0 (0%) available in pool 68: ARIN (since 2001-06), 16.256.256 addresses (97%) advertised, 518.656 (3%) assigned but not advertised, 0 (0%) available in pool 69: ARIN (since 2002-08), 15.695.104 addresses (94%) advertised, 1.065.728 (6%) assigned but not advertised, 0 (0%) available in pool 70: ARIN (since 2004-01), 16.634.624 addresses (99%) advertised, 152.320 (1%) assigned but not advertised, 0 (0%) available in pool 71: ARIN (since 2004-08), 16.537.856 addresses (99%) advertised, 235.264 (1%) assigned but not advertised, 0 (0%) available in pool 72: ARIN (since 2004-08), 16.028.928 addresses (96%) advertised, 822.272 (5%) assigned but not advertised, 0 (0%) available in pool 73: ARIN (since 2005-03), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 74: ARIN (since 2005-06), 16.363.776 addresses (98%) advertised, 407.296 (2%) assigned but not advertised, 0 (0%) available in pool 75: ARIN (since 2005-06), 16.248.576 addresses (97%) advertised, 528.640 (3%) assigned but not advertised, 0 (0%) available in pool 76: ARIN (since 2005-06), 14.754.304 addresses (88%) advertised, 2.075.136 (12%) assigned but not advertised, 0 (0%) available in pool 77: RIPE NCC (since 2006-08), 16.268.544 addresses (97%) advertised, 424.704 (3%) assigned but not advertised, 79.872 (0%) available in pool 78: RIPE NCC (since 2006-08), 16.690.688 addresses (99%) advertised, 124.416 (1%) assigned but not advertised, 14.336 (0%) available in pool 79: RIPE NCC (since 2006-08), 16.587.264 addresses (99%) advertised, 163.328 (1%) assigned but not advertised, 26.624 (0%) available in pool 80: RIPE NCC (since 2001-04), 16.414.720 addresses (98%) advertised, 373.760 (2%) assigned but not advertised, 44.032 (0%) available in pool 81: RIPE NCC (since 2001-04), 16.111.616 addresses (96%) advertised, 630.784 (4%) assigned but not advertised, 26.624 (0%) available in pool 82: RIPE NCC (since 2002-11), 16.536.320 addresses (99%) advertised, 274.944 (2%) assigned but not advertised, 4.096 (0%) available in pool 83: RIPE NCC (since 2003-11), 16.275.968 addresses (97%) advertised, 448.000 (3%) assigned but not advertised, 36.864 (0%) available in pool 84: RIPE NCC (since 2003-11), 16.628.736 addresses (99%) advertised, 121.600 (1%) assigned but not advertised, 45.056 (0%) available in pool 85: RIPE NCC (since 2004-04), 16.082.944 addresses (96%) advertised, 618.496 (4%) assigned but not advertised, 67.584 (0%) available in pool 86: RIPE NCC (since 2004-04), 15.387.904 addresses (92%) advertised, 1.374.976 (8%) assigned but not advertised, 18.432 (0%) available in pool 87: RIPE NCC (since 2004-04), 16.466.432 addresses (98%) advertised, 302.592 (2%) assigned but not advertised, 6.144 (0%) available in pool 88: RIPE NCC (since 2004-04), 16.584.704 addresses (99%) advertised, 152.320 (1%) assigned but not advertised, 4.096 (0%) available in pool 89: RIPE NCC (since 2005-06), 16.349.696 addresses (97%) advertised, 400.896 (2%) assigned but not advertised, 26.624 (0%) available in pool 90: RIPE NCC (since 2005-06), 15.549.952 addresses (93%) advertised, 1.227.264 (7%) assigned but not advertised, 0 (0%) available in pool 91: RIPE NCC (since 2005-06), 15.917.312 addresses (95%) advertised, 560.640 (3%) assigned but not advertised, 216.320 (1%) available in pool 92: RIPE NCC (since 2007-03), 15.421.696 addresses (92%) advertised, 1.254.912 (7%) assigned but not advertised, 40.960 (0%) available in pool 93: RIPE NCC (since 2007-03), 16.382.976 addresses (98%) advertised, 338.944 (2%) assigned but not advertised, 47.104 (0%) available in pool 94: RIPE NCC (since 2007-07), 16.222.464 addresses (97%) advertised, 594.944 (4%) assigned but not advertised, 43.008 (0%) available in pool 95: RIPE NCC (since 2007-07), 16.412.416 addresses (98%) advertised, 356.608 (2%) assigned but not advertised, 8.192 (0%) available in pool 96: ARIN (since 2006-10), 16.467.456 addresses (98%) advertised, 327.168 (2%) assigned but not advertised, 0 (0%) available in pool 97: ARIN (since 2006-10), 16.351.488 addresses (97%) advertised, 425.728 (3%) assigned but not advertised, 0 (0%) available in pool 98: ARIN (since 2006-10), 16.252.416 addresses (97%) advertised, 463.872 (3%) assigned but not advertised, 0 (0%) available in pool 99: ARIN (since 2006-10), 15.676.160 addresses (93%) advertised, 1.101.056 (7%) assigned but not advertised, 0 (0%) available in pool 100: ARIN (since 2010-11), 11.597.568 addresses (69%) advertised, 989.184 (6%) assigned but not advertised, 0 (0%) available in pool, 4.194.304 (25%) reserved by the IETF 101: APNIC (since 2010-08), 13.845.760 addresses (83%) advertised, 2.931.456 (17%) assigned but not advertised, 0 (0%) available in pool 102: AFRINIC (since 2011-02), 0 addresses (0%) advertised, 0 (0%) assigned but not advertised, 16.777.216 (100%) available in pool 103: APNIC (since 2011-02), 6.021.440 addresses (36%) advertised, 3.242.688 (19%) assigned but not advertised, 7.303.936 (44%) available in pool 104: ARIN (since 2011-02), 16.577.536 addresses (99%) advertised, 427.008 (3%) assigned but not advertised, 0 (0%) available in pool 105: AFRINIC (since 2010-11), 15.206.912 addresses (91%) advertised, 1.570.304 (9%) assigned but not advertised, 0 (0%) available in pool 106: APNIC (since 2011-01), 13.615.104 addresses (81%) advertised, 3.162.880 (19%) assigned but not advertised, 0 (0%) available in pool 107: ARIN (since 2010-02), 10.553.600 addresses (63%) advertised, 6.219.520 (37%) assigned but not advertised, 0 (0%) available in pool 108: ARIN (since 2008-12), 17.024.768 addresses (101%) advertised, 797.952 (5%) assigned but not advertised, 0 (0%) available in pool 109: RIPE NCC (since 2009-01), 16.233.216 addresses (97%) advertised, 503.040 (3%) assigned but not advertised, 40.960 (0%) available in pool 110: APNIC (since 2008-11), 15.978.752 addresses (95%) advertised, 769.792 (5%) assigned but not advertised, 0 (0%) available in pool 111: APNIC (since 2008-11), 16.087.296 addresses (96%) advertised, 689.920 (4%) assigned but not advertised, 0 (0%) available in pool 112: APNIC (since 2008-05), 16.515.328 addresses (98%) advertised, 265.728 (2%) assigned but not advertised, 0 (0%) available in pool 113: APNIC (since 2008-05), 16.349.184 addresses (97%) advertised, 427.008 (3%) assigned but not advertised, 0 (0%) available in pool 114: APNIC (since 2007-10), 15.812.864 addresses (94%) advertised, 1.945.856 (12%) assigned but not advertised, 0 (0%) available in pool 115: APNIC (since 2007-10), 15.047.936 addresses (90%) advertised, 1.727.232 (10%) assigned but not advertised, 0 (0%) available in pool 116: APNIC (since 2007-01), 11.449.600 addresses (68%) advertised, 5.258.496 (31%) assigned but not advertised, 0 (0%) available in pool 117: APNIC (since 2007-01), 16.088.064 addresses (96%) advertised, 686.080 (4%) assigned but not advertised, 0 (0%) available in pool 118: APNIC (since 2007-01), 15.399.424 addresses (92%) advertised, 1.378.560 (8%) assigned but not advertised, 0 (0%) available in pool 119: APNIC (since 2007-01), 15.768.576 addresses (94%) advertised, 1.008.640 (6%) assigned but not advertised, 0 (0%) available in pool 120: APNIC (since 2007-01), 16.107.008 addresses (96%) advertised, 898.304 (5%) assigned but not advertised, 0 (0%) available in pool 121: APNIC (since 2006-01), 16.440.576 addresses (98%) advertised, 336.640 (2%) assigned but not advertised, 0 (0%) available in pool 122: APNIC (since 2006-01), 15.922.688 addresses (95%) advertised, 913.920 (5%) assigned but not advertised, 0 (0%) available in pool 123: APNIC (since 2006-01), 16.120.064 addresses (96%) advertised, 584.448 (3%) assigned but not advertised, 0 (0%) available in pool 124: APNIC (since 2005-01), 15.873.088 addresses (95%) advertised, 910.016 (5%) assigned but not advertised, 0 (0%) available in pool 125: APNIC (since 2005-01), 16.545.536 addresses (99%) advertised, 224.512 (1%) assigned but not advertised, 0 (0%) available in pool 126: APNIC (since 2005-01), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 127: Reserved by the IETF (not available) 128: Legacy (Administered by ARIN, since 1993-05), 14.061.056 addresses (84%) advertised, 2.803.968 (17%) assigned but not advertised, 5.120 (0%) available in pool 129: Legacy (Administered by ARIN, since 1993-05), 12.413.184 addresses (74%) advertised, 4.364.032 (26%) assigned but not advertised, 0 (0%) available in pool 130: Legacy (Administered by ARIN, since 1993-05), 11.641.088 addresses (69%) advertised, 5.134.848 (31%) assigned but not advertised, 4.096 (0%) available in pool 131: Legacy (Administered by ARIN, since 1993-05), 12.782.080 addresses (76%) advertised, 3.929.600 (23%) assigned but not advertised, 0 (0%) available in pool 132: Legacy (Administered by ARIN, since 1993-05), 14.946.560 addresses (89%) advertised, 1.700.352 (10%) assigned but not advertised, 0 (0%) available in pool 133: Legacy (Administered by APNIC, since 1997-03), 10.305.280 addresses (61%) advertised, 6.471.936 (39%) assigned but not advertised, 0 (0%) available in pool 134: Legacy (Administered by ARIN, since 1993-05), 12.134.144 addresses (72%) advertised, 4.524.288 (27%) assigned but not advertised, 0 (0%) available in pool 135: Legacy (Administered by ARIN, since 1993-05), 6.648.064 addresses (40%) advertised, 10.129.152 (60%) assigned but not advertised, 0 (0%) available in pool 136: Legacy (Administered by ARIN, since 1993-05), 7.559.168 addresses (45%) advertised, 9.250.816 (55%) assigned but not advertised, 0 (0%) available in pool 137: Legacy (Administered by ARIN, since 1993-05), 12.353.024 addresses (74%) advertised, 4.423.168 (26%) assigned but not advertised, 0 (0%) available in pool 138: Legacy (Administered by ARIN, since 1993-05), 11.125.760 addresses (66%) advertised, 5.629.440 (34%) assigned but not advertised, 0 (0%) available in pool 139: Legacy (Administered by ARIN, since 1993-05), 10.702.848 addresses (64%) advertised, 5.943.296 (35%) assigned but not advertised, 65.536 (0%) available in pool 140: Legacy (Administered by ARIN, since 1993-05), 9.968.896 addresses (59%) advertised, 7.092.736 (42%) assigned but not advertised, 0 (0%) available in pool 141: Legacy (Administered by RIPE NCC, since 1993-05), 12.572.160 addresses (75%) advertised, 4.073.984 (24%) assigned but not advertised, 65.536 (0%) available in pool 142: Legacy (Administered by ARIN, since 1993-05), 9.802.496 addresses (58%) advertised, 6.985.728 (42%) assigned but not advertised, 0 (0%) available in pool 143: Legacy (Administered by ARIN, since 1993-05), 11.890.944 addresses (71%) advertised, 4.754.176 (28%) assigned but not advertised, 0 (0%) available in pool 144: Legacy (Administered by ARIN, since 1993-05), 9.821.184 addresses (59%) advertised, 7.228.928 (43%) assigned but not advertised, 0 (0%) available in pool 145: Legacy (Administered by RIPE NCC, since 1993-05), 12.963.840 addresses (77%) advertised, 3.813.376 (23%) assigned but not advertised, 0 (0%) available in pool 146: Legacy (Administered by ARIN, since 1993-05), 10.102.528 addresses (60%) advertised, 6.601.472 (39%) assigned but not advertised, 2.048 (0%) available in pool 147: Legacy (Administered by ARIN, since 1993-05), 10.670.336 addresses (64%) advertised, 5.975.808 (36%) assigned but not advertised, 65.536 (0%) available in pool 148: Legacy (Administered by ARIN, since 1993-05), 8.658.944 addresses (52%) advertised, 8.216.320 (49%) assigned but not advertised, 0 (0%) available in pool 149: Legacy (Administered by ARIN, since 1993-05), 11.194.912 addresses (67%) advertised, 5.511.136 (33%) assigned but not advertised, 4.096 (0%) available in pool 150: Legacy (Administered by APNIC, since 1993-05), 9.617.152 addresses (57%) advertised, 7.164.416 (43%) assigned but not advertised, 0 (0%) available in pool 151: Legacy (Administered by RIPE NCC, since 1993-05), 12.049.408 addresses (72%) advertised, 4.139.008 (25%) assigned but not advertised, 0 (0%) available in pool 152: Legacy (Administered by ARIN, since 1993-05), 13.071.360 addresses (78%) advertised, 3.574.784 (21%) assigned but not advertised, 65.536 (0%) available in pool 153: Legacy (Administered by APNIC, since 1993-05), 12.513.536 addresses (75%) advertised, 4.263.680 (25%) assigned but not advertised, 0 (0%) available in pool 154: Legacy (Administered by AFRINIC, since 1993-05), 10.887.680 addresses (65%) advertised, 1.356.288 (8%) assigned but not advertised, 4.526.080 (27%) available in pool 155: Legacy (Administered by ARIN, since 1993-05), 10.948.864 addresses (65%) advertised, 5.828.352 (35%) assigned but not advertised, 0 (0%) available in pool 156: Legacy (Administered by ARIN, since 1993-05), 11.812.352 addresses (70%) advertised, 5.017.856 (30%) assigned but not advertised, 196.608 (1%) available in pool 157: Legacy (Administered by ARIN, since 1993-05), 9.472.832 addresses (56%) advertised, 6.911.168 (41%) assigned but not advertised, 0 (0%) available in pool 158: Legacy (Administered by ARIN, since 1993-05), 10.150.144 addresses (60%) advertised, 6.666.240 (40%) assigned but not advertised, 0 (0%) available in pool 159: Legacy (Administered by ARIN, since 1993-05), 8.430.336 addresses (50%) advertised, 8.281.344 (49%) assigned but not advertised, 0 (0%) available in pool 160: Legacy (Administered by ARIN, since 1993-05), 10.425.856 addresses (62%) advertised, 5.391.104 (32%) assigned but not advertised, 485.376 (3%) available in pool 161: Legacy (Administered by ARIN, since 1993-05), 8.936.192 addresses (53%) advertised, 7.775.488 (46%) assigned but not advertised, 0 (0%) available in pool 162: Legacy (Administered by ARIN, since 1993-05), 11.732.992 addresses (70%) advertised, 5.215.744 (31%) assigned but not advertised, 2.048 (0%) available in pool 163: Legacy (Administered by APNIC, since 1993-05), 8.808.192 addresses (53%) advertised, 7.412.224 (44%) assigned but not advertised, 0 (0%) available in pool 164: Legacy (Administered by ARIN, since 1993-05), 7.408.640 addresses (44%) advertised, 9.388.032 (56%) assigned but not advertised, 4.096 (0%) available in pool 165: Legacy (Administered by ARIN, since 1993-05), 9.337.088 addresses (56%) advertised, 6.914.816 (41%) assigned but not advertised, 133.120 (1%) available in pool 166: Legacy (Administered by ARIN, since 1993-05), 11.490.048 addresses (68%) advertised, 5.172.480 (31%) assigned but not advertised, 0 (0%) available in pool 167: Legacy (Administered by ARIN, since 1993-05), 7.163.904 addresses (43%) advertised, 9.609.216 (57%) assigned but not advertised, 0 (0%) available in pool 168: Legacy (Administered by ARIN, since 1993-05), 11.141.888 addresses (66%) advertised, 5.511.680 (33%) assigned but not advertised, 0 (0%) available in pool 169: Legacy (Administered by ARIN, since 1993-05), 4.742.400 addresses (28%) advertised, 11.854.592 (71%) assigned but not advertised, 0 (0%) available in pool, 65.536 (0%) reserved by the IETF 170: Legacy (Administered by ARIN, since 1993-05), 7.598.592 addresses (45%) advertised, 9.096.960 (54%) assigned but not advertised, 431.360 (3%) available in pool 171: Legacy (Administered by APNIC, since 1993-05), 9.850.112 addresses (59%) advertised, 6.927.104 (41%) assigned but not advertised, 0 (0%) available in pool 172: Legacy (Administered by ARIN, since 1993-05), 14.499.072 addresses (86%) advertised, 1.108.992 (7%) assigned but not advertised, 0 (0%) available in pool, 1.048.576 (6%) reserved by the IETF 173: ARIN (since 2008-02), 15.695.616 addresses (94%) advertised, 1.057.024 (6%) assigned but not advertised, 0 (0%) available in pool 174: ARIN (since 2008-02), 15.910.912 addresses (95%) advertised, 873.984 (5%) assigned but not advertised, 0 (0%) available in pool 175: APNIC (since 2009-08), 16.162.304 addresses (96%) advertised, 613.888 (4%) assigned but not advertised, 0 (0%) available in pool 176: RIPE NCC (since 2010-05), 15.996.416 addresses (95%) advertised, 924.416 (6%) assigned but not advertised, 90.624 (1%) available in pool 177: LACNIC (since 2010-06), 16.276.736 addresses (97%) advertised, 414.464 (2%) assigned but not advertised, 0 (0%) available in pool 178: RIPE NCC (since 2009-01), 16.109.312 addresses (96%) advertised, 1.129.216 (7%) assigned but not advertised, 36.864 (0%) available in pool 179: LACNIC (since 2011-02), 15.669.504 addresses (93%) advertised, 1.074.688 (6%) assigned but not advertised, 0 (0%) available in pool 180: APNIC (since 2009-04), 16.009.728 addresses (95%) advertised, 790.016 (5%) assigned but not advertised, 0 (0%) available in pool 181: LACNIC (since 2010-06), 14.219.264 addresses (85%) advertised, 2.482.176 (15%) assigned but not advertised, 0 (0%) available in pool 182: APNIC (since 2009-08), 16.081.408 addresses (96%) advertised, 720.896 (4%) assigned but not advertised, 0 (0%) available in pool 183: APNIC (since 2009-04), 16.672.512 addresses (99%) advertised, 104.704 (1%) assigned but not advertised, 0 (0%) available in pool 184: ARIN (since 2008-12), 14.439.424 addresses (86%) advertised, 2.327.296 (14%) assigned but not advertised, 0 (0%) available in pool 185: RIPE NCC (since 2011-02), 8.998.656 addresses (54%) advertised, 2.651.392 (16%) assigned but not advertised, 5.003.008 (30%) available in pool 186: LACNIC (since 2007-09), 15.670.272 addresses (93%) advertised, 1.074.176 (6%) assigned but not advertised, 0 (0%) available in pool 187: LACNIC (since 2007-09), 15.217.664 addresses (91%) advertised, 1.477.632 (9%) assigned but not advertised, 0 (0%) available in pool 188: Legacy (Administered by RIPE NCC, since 1993-05), 16.196.608 addresses (97%) advertised, 743.936 (4%) assigned but not advertised, 47.104 (0%) available in pool 189: LACNIC (since 1995-06), 15.545.856 addresses (93%) advertised, 1.146.368 (7%) assigned but not advertised, 0 (0%) available in pool 190: LACNIC (since 1995-06), 16.024.064 addresses (96%) advertised, 593.920 (4%) assigned but not advertised, 0 (0%) available in pool 191: Legacy (Administered by LACNIC, since 1993-05), 16.284.160 addresses (97%) advertised, 488.704 (3%) assigned but not advertised, 0 (0%) available in pool 192: Legacy (Administered by ARIN, since 1993-05), 9.608.256 addresses (57%) advertised, 6.800.576 (41%) assigned but not advertised, 88.320 (1%) available in pool, 66.304 (0%) reserved by the IETF 193: RIPE NCC (since 1993-05), 13.403.392 addresses (80%) advertised, 2.337.408 (14%) assigned but not advertised, 1.012.352 (6%) available in pool 194: RIPE NCC (since 1993-05), 14.107.008 addresses (84%) advertised, 1.714.584 (10%) assigned but not advertised, 1.016.776 (6%) available in pool 195: RIPE NCC (since 1993-05), 15.346.176 addresses (91%) advertised, 1.240.352 (7%) assigned but not advertised, 177.376 (1%) available in pool 196: Legacy (Administered by AFRINIC, since 1993-05), 11.601.920 addresses (69%) advertised, 4.791.296 (29%) assigned but not advertised, 141.568 (1%) available in pool 197: AFRINIC (since 2008-10), 16.037.376 addresses (96%) advertised, 518.656 (3%) assigned but not advertised, 0 (0%) available in pool 198: Legacy (Administered by ARIN, since 1993-05), 11.698.176 addresses (70%) advertised, 4.951.168 (30%) assigned but not advertised, 0 (0%) available in pool, 131.328 (1%) reserved by the IETF 199: ARIN (since 1993-05), 10.808.832 addresses (64%) advertised, 5.868.288 (35%) assigned but not advertised, 0 (0%) available in pool 200: LACNIC (since 2002-11), 15.432.000 addresses (92%) advertised, 1.273.536 (8%) assigned but not advertised, 0 (0%) available in pool 201: LACNIC (since 2003-04), 15.365.888 addresses (92%) advertised, 1.283.840 (8%) assigned but not advertised, 0 (0%) available in pool 202: APNIC (since 1993-05), 13.496.836 addresses (80%) advertised, 3.281.916 (20%) assigned but not advertised, 256 (0%) available in pool 203: APNIC (since 1993-05), 14.046.224 addresses (84%) advertised, 2.696.944 (16%) assigned but not advertised, 0 (0%) available in pool, 256 (0%) reserved by the IETF 204: ARIN (since 1994-03), 12.590.592 addresses (75%) advertised, 4.185.856 (25%) assigned but not advertised, 0 (0%) available in pool 205: ARIN (since 1994-03), 10.762.240 addresses (64%) advertised, 6.002.176 (36%) assigned but not advertised, 0 (0%) available in pool 206: ARIN (since 1995-04), 13.571.328 addresses (81%) advertised, 3.223.040 (19%) assigned but not advertised, 0 (0%) available in pool 207: ARIN (since 1995-11), 14.712.576 addresses (88%) advertised, 2.006.784 (12%) assigned but not advertised, 0 (0%) available in pool 208: ARIN (since 1996-04), 16.274.176 addresses (97%) advertised, 521.728 (3%) assigned but not advertised, 0 (0%) available in pool 209: ARIN (since 1996-06), 14.961.408 addresses (89%) advertised, 1.723.648 (10%) assigned but not advertised, 0 (0%) available in pool 210: APNIC (since 1996-06), 15.826.176 addresses (94%) advertised, 1.177.856 (7%) assigned but not advertised, 0 (0%) available in pool 211: APNIC (since 1996-06), 15.962.112 addresses (95%) advertised, 815.104 (5%) assigned but not advertised, 0 (0%) available in pool 212: RIPE NCC (since 1997-10), 15.987.200 addresses (95%) advertised, 722.176 (4%) assigned but not advertised, 81.920 (0%) available in pool 213: RIPE NCC (since 1993-10), 16.116.992 addresses (96%) advertised, 551.680 (3%) assigned but not advertised, 92.160 (1%) available in pool 214: Legacy (US-DOD, since 1998-03), 16.777.216 addresses (100%) advertised, 0 (0%) assigned but not advertised, 0 (0%) available in pool 215: Legacy (US-DOD, since 1998-03), 8.388.608 addresses (50%) advertised, 8.388.608 (50%) assigned but not advertised, 0 (0%) available in pool 216: ARIN (since 1998-04), 15.756.544 addresses (94%) advertised, 982.016 (6%) assigned but not advertised, 0 (0%) available in pool 217: RIPE NCC (since 2000-06), 16.462.336 addresses (98%) advertised, 278.016 (2%) assigned but not advertised, 36.864 (0%) available in pool 218: APNIC (since 2000-12), 16.513.792 addresses (98%) advertised, 392.960 (2%) assigned but not advertised, 0 (0%) available in pool 219: APNIC (since 2001-09), 16.512.768 addresses (98%) advertised, 264.448 (2%) assigned but not advertised, 0 (0%) available in pool 220: APNIC (since 2001-12), 15.443.328 addresses (92%) advertised, 1.331.584 (8%) assigned but not advertised, 0 (0%) available in pool 221: APNIC (since 2002-07), 16.601.600 addresses (99%) advertised, 175.616 (1%) assigned but not advertised, 0 (0%) available in pool 222: APNIC (since 2003-02), 16.766.208 addresses (100%) advertised, 11.008 (0%) assigned but not advertised, 0 (0%) available in pool 223: APNIC (since 2010-04), 15.810.560 addresses (94%) advertised, 961.536 (6%) assigned but not advertised, 0 (0%) available in pool 224: Multicast 225: Multicast 226: Multicast 227: Multicast 228: Multicast 229: Multicast 230: Multicast 231: Multicast 232: Multicast 233: Multicast 234: Multicast 235: Multicast 236: Multicast 237: Multicast 238: Multicast 239: Multicast 240: Reserved by the IETF (not available) 241: Reserved by the IETF (not available) 242: Reserved by the IETF (not available) 243: Reserved by the IETF (not available) 244: Reserved by the IETF (not available) 245: Reserved by the IETF (not available) 246: Reserved by the IETF (not available) 247: Reserved by the IETF (not available) 248: Reserved by the IETF (not available) 249: Reserved by the IETF (not available) 250: Reserved by the IETF (not available) 251: Reserved by the IETF (not available) 252: Reserved by the IETF (not available) 253: Reserved by the IETF (not available) 254: Reserved by the IETF (not available) 255: Reserved by the IETF (not available)

IPv4 address space

The colors in the following image are based on the number of advertised addresses. Advertised addresses lag allocations, additionally many "legacy" blocks are not advertised.

IPv4 address space

The images are generated daily from the current assignment data from IANA and aggregated routing info from Geoff Huston's IPv4 Report.

Route announcements do not necessarily show whether addresses are used or unused: For example, IBM does not advertise any addresses from 9.0.0.0/8, but many of those addresses are used internally.

The Regional Internet Registries are:
AfriNICAfrica
APNICAsia/Pacific
ARINCanada, many Caribbean and North Atlantic islands, and the United States
LACNICLatin America and the Caribbean
RIPE NCCEurope, Middle East, and Parts of Central Asia

You connected using IPv4.

Webmaster: Martin Kotzan
Last updated: 05.12.2016 10:04