AS2856 British Telecommunications Plc
General Info - AS2856
13,303,808
10,775,034,937,643,192,342,441,657,106,432
IP Address Ranges
| Netblock | Number of IPs | |
|---|---|---|
| 2001:4878:c259::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2a00:2380::/25 | 10,141,204,801,825,835,211,973,625,643,008 | |
| 2a01:4c8::/33 | 39,614,081,257,132,168,796,771,975,168 | |
| 2a01:4c8:8000::/34 | 19,807,040,628,566,084,398,385,987,584 | |
| 2a01:4c8:c000::/35 | 9,903,520,314,283,042,199,192,993,792 | |
| 2a01:4c8:e000::/36 | 4,951,760,157,141,521,099,596,496,896 | |
| 2a01:4c8:f000::/38 | 1,237,940,039,285,380,274,899,124,224 | |
| 2a01:4c8:f400::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2a01:4c8:f401::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2a01:4c8:f402::/47 | 2,417,851,639,229,258,349,412,352 | |
| 2a01:4c8:f404::/46 | 4,835,703,278,458,516,698,824,704 | |
| 2a01:4c8:f408::/45 | 9,671,406,556,917,033,397,649,408 | |
| 2a01:4c8:f410::/44 | 19,342,813,113,834,066,795,298,816 | |
| 2a01:4c8:f420::/43 | 38,685,626,227,668,133,590,597,632 | |
| 2a01:4c8:f440::/42 | 77,371,252,455,336,267,181,195,264 | |
| 2a01:4c8:f480::/41 | 154,742,504,910,672,534,362,390,528 | |
| 2a01:4c8:f500::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a01:4c8:f600::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2a01:4c8:f800::/37 | 2,475,880,078,570,760,549,798,248,448 | |
| 2a01:4c9::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a01:4ca::/31 | 158,456,325,028,528,675,187,087,900,672 | |
| 2a01:4cc::/30 | 316,912,650,057,057,350,374,175,801,344 | |
| 2a02:ee80:4176::/47 | 2,417,851,639,229,258,349,412,352 | |
| 2a03:1e82:90ff::/48 | 1,208,925,819,614,629,174,706,176 |
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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.
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