AS5400 British Telecommunications Plc
General Info - AS5400
566,016
9,223,372,036,854,775,808
IP Address Ranges
| Netblock | Number of IPs | |
|---|---|---|
| 2001:740::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2000::/23 | 40,564,819,207,303,340,847,894,502,572,032 | |
| 2a00:2200::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2a00:2200:200::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:300::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:400::/38 | 1,237,940,039,285,380,274,899,124,224 | |
| 2a00:2200:800::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:900::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:a00::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:b00::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:c00::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:d00::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:e00::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2a00:2200:1000::/36 | 4,951,760,157,141,521,099,596,496,896 | |
| 2a00:2200:2000::/35 | 9,903,520,314,283,042,199,192,993,792 | |
| 2a00:2200:4000::/36 | 4,951,760,157,141,521,099,596,496,896 | |
| 2a00:2200:5000::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2a00:2200:5200::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:5300::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:5400::/38 | 1,237,940,039,285,380,274,899,124,224 | |
| 2a00:2200:5800::/37 | 2,475,880,078,570,760,549,798,248,448 | |
| 2a00:2200:6000::/35 | 9,903,520,314,283,042,199,192,993,792 | |
| 2a00:2200:8000::/33 | 39,614,081,257,132,168,796,771,975,168 | |
| 2a00:2201::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2202::/31 | 158,456,325,028,528,675,187,087,900,672 | |
| 2a00:2204::/30 | 316,912,650,057,057,350,374,175,801,344 | |
| 2a00:2208::/29 | 633,825,300,114,114,700,748,351,602,688 | |
| 2a00:2210::/28 | 1,267,650,600,228,229,401,496,703,205,376 | |
| 2a00:2220::/27 | 2,535,301,200,456,458,802,993,406,410,752 | |
| 2a00:2240::/26 | 5,070,602,400,912,917,605,986,812,821,504 | |
| 2a00:2280::/25 | 10,141,204,801,825,835,211,973,625,643,008 | |
| 2a00:2300::/25 | 10,141,204,801,825,835,211,973,625,643,008 | |
| 2a0c:7c80::/29 | 633,825,300,114,114,700,748,351,602,688 | |
| 2a0c:8480::/30 | 316,912,650,057,057,350,374,175,801,344 |
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What is an Autonomous System (AS)?
An Autonomous System (AS) is a collection of connected networks that operate under a common administrative domain and share routing policies. Each AS is identified by a unique Autonomous System Number (ASN), which is used to exchange routing information with other ASs. AS can control how traffic flows through networks and then filter out unwanted traffic.
