United Kingdom
Top organizations
| Organization | IPs | Ranges |
|---|---|---|
| Microsoft Corporation | 21.38M | 243 |
| British Telecommunications Limited | 16.38M | 646 |
| Virgin Media | 8.50M | 322 |
| Jisc Services Limited | 6.90M | 195 |
| Sky UK Limited | 6.29M | 66 |
| TalkTalk | 4.07M | 84 |
| Amazon.com, Inc. | 3.09M | 212 |
| Vodafone Limited | 2.79M | 38 |
| IDDQD-AS | 1.65M | 126 |
| Verizon Business | 1.22M | 160 |
| GTT Communications Inc. | 890.6K | 961 |
| Wavenet Limited | 837.1K | 153 |
| Claranet Limited | 616.2K | 31 |
| Gamma Telecom Holdings Ltd | 611.6K | 34 |
| Level 3 Parent, LLC | 588.3K | 257 |
| Three | 529.4K | 14 |
| Zen Internet Ltd | 527.6K | 36 |
| Glide Student & Residential Limited | 487.7K | 285 |
| Rackspace Ltd. | 487.7K | 59 |
| AT&T Enterprises, LLC | 470.5K | 28 |
| GCI Network Solutions Limited | 435.7K | 520 |
| COLT Technology Services Group Limited | 403.5K | 57 |
| Cogent Communications, LLC | 386.3K | 185 |
| Iomart Cloud Services Limited | 373.8K | 170 |
| Cityfibre Limited | 358.4K | 42 |
Top ASNs
| ASN | Name | IPs |
|---|---|---|
| AS8075 | Microsoft Corporation | 21.35M |
| AS2856 | British Telecommunications Limited | 13.86M |
| AS5089 | Virgin Media | 8.50M |
| AS786 | Jisc Services Limited | 6.90M |
| AS5607 | Sky UK Limited | 6.27M |
| AS13285 | TalkTalk | 3.96M |
| AS16509 | Amazon.com, Inc. | 3.09M |
| AS5378 | Vodafone Limited | 2.53M |
| AS6871 | British Telecommunications Limited | 2.16M |
| AS1273 | IDDQD-AS | 1.65M |
| AS702 | Verizon Business | 1.22M |
| AS3257 | GTT Communications Inc. | 890.6K |
| AS5413 | Wavenet Limited | 732.4K |
| AS8426 | Claranet Limited | 615.9K |
| AS31655 | Gamma Telecom Holdings Ltd | 609.5K |
| AS206067 | Three | 529.2K |
| AS13037 | Zen Internet Ltd | 527.6K |
| AS42689 | Glide Student & Residential Limited | 487.7K |
| AS2686 | AT&T Enterprises, LLC | 460.5K |
| AS8851 | GCI Network Solutions Limited | 435.7K |
| AS15395 | Rackspace Ltd. | 394.8K |
| AS174 | Cogent Communications, LLC | 386.3K |
| AS20860 | Iomart Cloud Services Limited | 373.5K |
| AS3356 | Level 3 Parent, LLC | 363.8K |
| AS8468 | Cityfibre Limited | 358.4K |
Regions / states / provinces
Network composition
How United Kingdom's allocated IPv4 space breaks down by operator type, regional registry, and block size.
| Category | IPv4 | Share |
|---|---|---|
| ISP / Telecom | 29.92M |
34.3%
|
| Enterprise | 28.51M |
32.7%
|
| Hosting / Cloud | 23.98M |
27.5%
|
| Mobile | 4.39M |
5.0%
|
| Academic / Research | 310.0K |
0.4%
|
| CDN | 113.9K |
0.1%
|
| Government | 73.5K |
0.1%
|
| Registry | IPv4 | Share |
|---|---|---|
| RIPE NCC | 122.08M |
94.4%
|
| ARIN | 7.05M |
5.4%
|
| APNIC | 179.2K |
0.1%
|
| AFRINIC | 71.0K |
0.1%
|
| LACNIC | 6.7K |
0.0%
|
Routing & security
Live BGP routing footprint for United Kingdom from our global collectors, with RPKI route-origin validation coverage.
RPKI-valid % = announced prefixes with a matching Route Origin Authorization. Live routing →
Web3 footprint
United Kingdom hosts 877 observed decentralized-network nodes across 10 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.
Reverse-DNS, threat intelligence & internet health
How much of United Kingdom's address space resolves to a hostname, how much appears on public threat blocklists, how widely the population is online, and independent signals of censorship and outages.
Reverse-DNS + threat-blocklist footprint from our own scanning & 8 threat-intel feeds. Internet adoption from the World Bank; censorship measurements from OONI; outage detection from IODA / Georgia Tech; connection speed from Cloudflare Radar.
Frequently Asked Questions
How many IPv4 addresses are allocated to United Kingdom?
United Kingdom has 129,245,483 IPv4 addresses allocated across 36,538 network ranges. These allocations are managed by regional internet registries and assigned to organizations operating within the country.
What are the largest internet providers in United Kingdom?
The top organizations in United Kingdom by IP allocation include the major ISPs, hosting providers, and enterprises listed above. These 50 organizations collectively manage the majority of the country's IPv4 address space.
How many ASNs operate in United Kingdom?
United Kingdom has 50 or more registered Autonomous Systems. Each ASN represents an independently routed network, such as an ISP, cloud provider, or enterprise network.
What continent is United Kingdom in?
United Kingdom is located in Europe. IP address allocations in this region are managed by RIPE NCC.
