United Kingdom
Top organizations
| Organization | IPs | Ranges |
|---|---|---|
| Microsoft Corporation | 29.85M | 256 |
| British Telecommunications Limited | 23.26M | 731 |
| Virgin Media | 11.05M | 295 |
| Jisc Services Limited | 7.09M | 205 |
| Sky UK Limited | 6.73M | 32 |
| TalkTalk | 5.64M | 100 |
| Vodafone Limited | 4.37M | 77 |
| Amazon.com, Inc. | 3.27M | 234 |
| GTT Communications Inc. | 2.39M | 1,419 |
| IDDQD-AS | 1.47M | 127 |
| Verizon Business | 1.32M | 163 |
| Wavenet Limited | 840.4K | 154 |
| Three | 791.6K | 32 |
| Claranet Limited | 624.1K | 36 |
| Gamma Telecom Holdings Ltd | 611.6K | 34 |
| GCI Network Solutions Limited | 575.7K | 685 |
| Level 3 Parent, LLC | 545.5K | 270 |
| Glide Student & Residential Limited | 544.0K | 303 |
| Zen Internet Ltd | 528.1K | 37 |
| Rackspace Ltd. | 504.3K | 61 |
| COLT Technology Services Group Limited | 466.2K | 61 |
| Iomart Cloud Services Limited | 414.7K | 189 |
| Cityfibre Limited | 358.9K | 43 |
| Cogent Communications, LLC | 342.0K | 211 |
| Akamai Connected Cloud | 337.7K | 21 |
Top ASNs
| ASN | Name | IPs |
|---|---|---|
| AS8075 | Microsoft Corporation | 29.83M |
| AS2856 | British Telecommunications Limited | 20.32M |
| AS5089 | Virgin Media | 11.05M |
| AS786 | Jisc Services Limited | 7.08M |
| AS5607 | Sky UK Limited | 6.72M |
| AS13285 | TalkTalk | 5.53M |
| AS5378 | Vodafone Limited | 4.10M |
| AS16509 | Amazon.com, Inc. | 3.27M |
| AS6871 | British Telecommunications Limited | 2.56M |
| AS3257 | GTT Communications Inc. | 2.39M |
| AS1273 | IDDQD-AS | 1.47M |
| AS702 | Verizon Business | 1.32M |
| AS206067 | Three | 791.3K |
| AS5413 | Wavenet Limited | 736.3K |
| AS8426 | Claranet Limited | 623.9K |
| AS31655 | Gamma Telecom Holdings Ltd | 609.5K |
| AS8851 | GCI Network Solutions Limited | 575.7K |
| AS42689 | Glide Student & Residential Limited | 544.0K |
| AS13037 | Zen Internet Ltd | 528.1K |
| AS20860 | Iomart Cloud Services Limited | 414.5K |
| AS15395 | Rackspace Ltd. | 394.8K |
| AS8220 | COLT Technology Services Group Limited | 394.5K |
| AS5400 | British Telecommunications Limited | 370.7K |
| AS8468 | Cityfibre Limited | 358.9K |
| AS174 | Cogent Communications, LLC | 342.0K |
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 | 30.32M |
36.1%
|
| Enterprise | 27.76M |
33.1%
|
| Hosting / Cloud | 20.44M |
24.3%
|
| Mobile | 4.92M |
5.9%
|
| Academic / Research | 363.3K |
0.4%
|
| CDN | 94.7K |
0.1%
|
| Government | 73.5K |
0.1%
|
| Registry | IPv4 | Share |
|---|---|---|
| RIPE NCC | 102.26M |
68.7%
|
| ARIN | 44.80M |
30.1%
|
| APNIC | 1.35M |
0.9%
|
| AFRINIC | 300.6K |
0.2%
|
| LACNIC | 69.4K |
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 373 observed decentralized-network nodes across 7 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 153,421,815 IPv4 addresses allocated across 41,896 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.
