An ASN lookup helps you identify the Autonomous System Number (ASN) behind an IP address, including the ISP, network owner, and routing details. Use it to better understand IP ownership and network behavior.
Result
2856
British Telecommunications Limited
bt.com
(ISP) Fixed Line ISP
13,322,240
10.8 Nonillion
| 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 |
| United Kingdom of Great Britain and Northern Ireland |
|
99.95% |
| Germany |
|
0.02% |
| United States of America |
|
0.02% |
| Norway |
|
0% |
| Others |
|
0.010000000000005% |
(DCH) Data Center/Web Hosting/Transit
1.11%
(ISP) Fixed Line ISP
0.73%
(COM) Commercial
0.4%
(GOV) Government
0.32%
This category encompasses data centers, cloud hosting providers, and the transit networks that form the internet's backbone. These IPs are built for high-capacity and maximum uptime, supporting the infrastructure that hosts websites and cloud-based software.
Internet Service Providers in this category offer wired broadband connections to homes, offices, and commercial buildings. They are responsible for the fundamental routing of internet traffic and the management of regional network infrastructure.
Commercial networks are operated by for-profit businesses ranging from local startups to multinational corporations. These IPs facilitate e-commerce, internal corporate operations, and general business activities aimed at generating revenue.
Government IPs are assigned to official agencies and entities at local, regional, and national levels. These networks are critical for managing public services, regulatory functions, and general administrative tasks.
Sign up now and you will be able to access ALL IP databases for FREE!
No hidden costs. No credit card required.