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
5400
British Telecommunications Plc
bt.com
(ISP) Fixed Line ISP
571,136
71.7 Nonillion
| Netblock | Number of IPs | |
|---|---|---|
| 2001:740::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2402:fb00:8000::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2402:fb00:8400::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2402:fb00:8800::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2606:f100:d000::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2606:f100:d400::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2606:f100:d600::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2606:f100:d800::/38 | 1,237,940,039,285,380,274,899,124,224 | |
| 2606:f100:dc00::/38 | 1,237,940,039,285,380,274,899,124,224 | |
| 2a00:2000::/25 | 10,141,204,801,825,835,211,973,625,643,008 | |
| 2a00:2080::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2081::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2082::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2083::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2084::/30 | 316,912,650,057,057,350,374,175,801,344 | |
| 2a00:2088::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2089::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:208a::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:208b::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:208c::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:208d::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:208e::/31 | 158,456,325,028,528,675,187,087,900,672 | |
| 2a00:2090::/28 | 1,267,650,600,228,229,401,496,703,205,376 | |
| 2a00:20a0::/27 | 2,535,301,200,456,458,802,993,406,410,752 | |
| 2a00:20c0::/26 | 5,070,602,400,912,917,605,986,812,821,504 | |
| 2a00:2100::/24 | 20,282,409,603,651,670,423,947,251,286,016 | |
| 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::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:2100::/40 | 309,485,009,821,345,068,724,781,056 | |
| 2a00:2200:2200::/39 | 618,970,019,642,690,137,449,562,112 | |
| 2a00:2200:2400::/38 | 1,237,940,039,285,380,274,899,124,224 | |
| 2a00:2200:2800::/37 | 2,475,880,078,570,760,549,798,248,448 | |
| 2a00:2200:3000::/36 | 4,951,760,157,141,521,099,596,496,896 | |
| 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 |
| Sweden |
|
23.56% |
| United Kingdom of Great Britain and Northern Ireland |
|
23.39% |
| Belgium |
|
13.5% |
| Germany |
|
10.96% |
| Others |
|
28.59% |
(ISP) Fixed Line ISP
67.17%
(COM) Commercial
7.5%
(DCH) Data Center/Web Hosting/Transit
3.41%
(MOB) Mobile ISP
0.22%
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.
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.
Mobile network operators provide internet connectivity via cellular technologies such as 4G and 5G. These IPs are primarily used by smartphones, tablets, and IoT devices, offering flexible access for users on the move. They are characterized by wide geographic coverage and the ability to handle high volumes of roaming traffic.
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