Autonomous Systems in United Kingdom
| # | AS | Name | Peers | Upstreams | IPv4 | IPv6 |
|---|---|---|---|---|---|---|
| 1 | AS9002 | RETN | 759 | 3 | 14 | 1 |
| 2 | AS2856 | BTnet (BT's UK IP Network - AS2856) | 105 | 1 | 535 | 6 |
| 3 | AS1273 | Vodafone Global Network | 97 | 2 | 163 | 2 |
| 4 | AS209735 | Lagrange Cloud Technologies Limited | 68 | 1 | 2 | 3 |
| 5 | AS2686 | AT&T EMEA | 60 | 0 | 122 | 1 |
| 6 | AS5400 | BT | 52 | 1 | 85 | 40 |
| 7 | AS3170 | VeloxServ Communications | 44 | 2 | 72 | 13 |
| 8 | AS25180 | Exponential-e | 44 | 2 | 44 | 3 |
| 9 | AS5089 | Virgin Media | 39 | 2 | 210 | 3 |
| 10 | AS25369 | Hydra Communications Ltd (EU) | 32 | 2 | 258 | 18 |
| 11 | AS786 | Janet | 27 | 2 | 209 | 7 |
| 12 | AS35200 | TransitX-Ltd | 25 | 3 | 16 | 1 |
| 13 | AS42831 | UK Dedicated Servers | 24 | 3 | 254 | 8 |
| 14 | AS20712 | Andrews & Arnold Ltd | 23 | 3 | 87 | 21 |
| 15 | AS56595 | Fluency | 23 | 2 | 36 | 2 |
| 16 | AS207841 | Inferno Communications | 22 | 2 | 4 | 4 |
| 17 | AS20860 | iomart | 21 | 3 | 192 | 16 |
| 18 | AS49418 | Netshield Ltd | 21 | 5 | 8 | 5 |
| 19 | AS12703 | Pulsant | 20 | 1 | 60 | 7 |
| 20 | AS212027 | PebbleHost | 20 | 3 | 24 | 1 |
| 21 | AS61231 | Neos Networks | 20 | 2 | 8 | 1 |
| 22 | AS43009 | INFOBIP | 19 | 19 | 39 | 2 |
| 23 | AS44684 | Mythic Beasts Ltd | 19 | 1 | 7 | 2 |
| 24 | AS213607 | World First Communication Ltd | 18 | 16 | 106 | 1 |
| 25 | AS56264 | Tomato Web Limited | 18 | 4 | 57 | 11 |
| 26 | AS49592 | Pipe Networks GmbH | 18 | 4 | 18 | 6 |
| 27 | AS212396 | FyfeWeb Hosting | 18 | 2 | 13 | 3 |
| 28 | AS212683 | Olilo UK & Ireland Ltd. | 17 | 2 | 29 | 2 |
| 29 | AS8426 | Claranet | 15 | 4 | 87 | 18 |
| 30 | AS48266 | Catixs | 15 | 4 | 49 | 29 |
| 31 | AS39326 | Syntura Group Limited | 14 | 1 | 30 | 4 |
| 32 | AS60672 | ServerChoice Ltd | 14 | 2 | 23 | 3 |
| 33 | AS216213 | Lexistar Alliance Ltd. | 14 | 1 | 0 | 4 |
| 34 | AS44356 | Epsilon | 13 | 4 | 29 | 3 |
| 35 | AS61049 | Exascale | 13 | 1 | 17 | 6 |
| 36 | AS215638 | Cilix Limited | 13 | 2 | 10 | 6 |
| 37 | AS5413 | Wavenet Limited - AS5413 | 12 | 2 | 103 | 5 |
| 38 | AS29457 | Options Technology Ltd | 12 | 11 | 55 | 4 |
| 39 | AS35266 | EX Networks Limited (EXN) | 12 | 3 | 15 | 4 |
| 40 | AS52041 | Scaleblade | 12 | 4 | 11 | 9 |
| 41 | AS51048 | Next Connex | 12 | 1 | 9 | 1 |
| 42 | AS4913 | Speedcast Singapore Pte Ltd | 11 | 10 | 69 | 0 |
| 43 | AS6908 | Six Degrees - Datahop | 11 | 3 | 43 | 5 |
| 44 | AS13009 | Redcentric PLC | 11 | 2 | 28 | 2 |
| 45 | AS213605 | Liu HaoRan | 11 | 2 | 4 | 32 |
| 46 | AS44355 | Autoscout24 GmbH | 11 | 2 | 1 | 2 |
| 47 | AS31727 | Node4 Ltd | 10 | 4 | 142 | 2 |
| 48 | AS50300 | Custodian DataCentres | 10 | 4 | 39 | 7 |
| 49 | AS60439 | Server.net | 10 | 2 | 37 | 6 |
| 50 | AS25160 | Vorboss Limited | 10 | 1 | 33 | 4 |
| 51 | AS50889 | NVIDIA NGN EMEA | 10 | 10 | 33 | 0 |
| 52 | AS51043 | Aspire Technology Solutions | 10 | 2 | 21 | 1 |
| 53 | AS39545 | Fluidata | 10 | 3 | 6 | 1 |
| 54 | AS204921 | zhenyun sun | 10 | 6 | 6 | 15 |
| 55 | AS60011 | Mythic Beasts USA | 10 | 2 | 4 | 2 |
| 56 | AS216265 | Aristo Networks Ltd | 10 | 2 | 1 | 1 |
| 57 | AS43937 | Playtech Estonia OU | 9 | 9 | 128 | 16 |
| 58 | AS59395 | Southern Communications | 9 | 5 | 27 | 4 |
| 59 | AS29550 | Simply Transit Ltd | 9 | 2 | 12 | 2 |
| 60 | AS49425 | Digital Realty United Kingdom | 9 | 2 | 9 | 1 |
| 61 | AS60800 | Netwise Hosting Ltd | 9 | 1 | 8 | 1 |
| 62 | AS8801 | Darest Informatic S.A. | 9 | 2 | 7 | 2 |
| 63 | AS51945 | Enlink Ltd | 9 | 2 | 5 | 1 |
| 64 | AS249 | IDDQD-AS | 9 | 2 | 1 | 2 |
| 65 | AS16247 | M247 Ltd | 8 | 3 | 226 | 9 |
| 66 | AS25577 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | 8 | 2 | 52 | 1 |
| 67 | AS31655 | Gamma | 8 | 2 | 36 | 3 |
| 68 | AS17158 | DATTO AS17158 | 8 | 8 | 26 | 0 |
| 69 | AS31708 | Coreix Limited | 8 | 1 | 23 | 2 |
| 70 | AS205394 | CSL (DualCom) | 8 | 8 | 17 | 5 |
| 71 | AS15570 | InterNAP Network Services U.K. Limited | 8 | 1 | 16 | 1 |
| 72 | AS42705 | Talia Global | 8 | 3 | 14 | 0 |
| 73 | AS8282 | Bink Group | 8 | 1 | 9 | 2 |
| 74 | AS25181 | Sony Europe B.V. | 8 | 3 | 9 | 6 |
| 75 | AS8676 | PRT Systems Ltd | 8 | 3 | 7 | 3 |
| 76 | AS8943 | Jump Networks | 8 | 1 | 7 | 5 |
| 77 | AS41477 | LMAX | 8 | 4 | 7 | 0 |
| 78 | AS216382 | Layer Marketing Services L.L.C | 8 | 5 | 6 | 12 |
| 79 | AS62246 | TRANSMEDIA LLC | 8 | 4 | 5 | 4 |
| 80 | AS16164 | Sohonet Ltd | 8 | 4 | 3 | 0 |
| 81 | AS207529 | Nyanloli Ltd | 8 | 0 | 0 | 10 |
| 82 | AS42689 | Glide | 7 | 1 | 354 | 3 |
| 83 | AS35228 | O2 Broadband | 7 | 3 | 112 | 23 |
| 84 | AS13285 | PlatformX Communications | 7 | 4 | 94 | 5 |
| 85 | AS213176 | Perimeter-81 | 7 | 7 | 38 | 0 |
| 86 | AS5631 | Luminet Data | 7 | 2 | 30 | 4 |
| 87 | AS45014 | nLighten | 7 | 5 | 30 | 6 |
| 88 | AS47474 | Virtual1 Ltd | 7 | 1 | 16 | 1 |
| 89 | AS393226 | ICE Processing International Limited | 7 | 7 | 13 | 0 |
| 90 | AS15510 | CWCS Managed Hosting | 7 | 3 | 12 | 1 |
| 91 | AS25460 | The Networking People (TNP) | 7 | 1 | 9 | 1 |
| 92 | AS13002 | ISIX Communications | 7 | 4 | 7 | 4 |
| 93 | AS48185 | team.blue NV | 7 | 2 | 1 | 1 |
| 94 | AS51601 | Ай-пи-ти-пи | 7 | 1 | 1 | 2 |
| 95 | AS219070 | Eximia Networks Limited | 7 | 0 | 0 | 9 |
| 96 | AS214238 | Host Telecom Ltd | 6 | 6 | 329 | 0 |
| 97 | AS29611 | Elite Limited | 6 | 1 | 64 | 6 |
| 98 | AS5607 | Sky Broadband | 6 | 3 | 49 | 30 |
| 99 | AS8468 | CityFibre | 6 | 2 | 44 | 3 |
| 100 | AS12701 | BARCAP | 6 | 6 | 33 | 0 |