AS5400 British Telecommunications PLC
General Info - AS5400
563,456
9,223,372,036,854,775,808
IP Address Ranges
| Netblock | Number of IPs | |
|---|---|---|
| 2001:740::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2a00:2000::/23 | 40,564,819,207,303,340,847,894,502,572,032 | |
| 2a00:2200::/24 | 20,282,409,603,651,670,423,947,251,286,016 | |
| 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 | |
| 2a0c:8480::/30 | 316,912,650,057,057,350,374,175,801,344 |
Upstreams
- AS174 Cogent Communications
- AS1257 Tele2 Sverige AB
- AS1299 Arelion Sweden AB
- AS2497 Asia Pacific Network Information Centre
- AS2914 NTT America Inc.
- AS3257 GTT Communications Inc.
- AS3303 Swisscom (Schweiz) AG
- AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
- AS3356 Level 3 Parent LLC
- AS6079 RCN
- AS6762 Telecom Italia Sparkle S.p.A.
- AS6939 Hurricane Electric LLC
- AS11164 Internet2
- AS12552 GlobalConnect AB
Downstreams
- AS72 Schlumberger Limited
- AS2110 BT Communications Ireland Limited
- AS2856 British Telecommunications PLC
- AS7246 Bristol-Myers Squibb Company
- AS8640 Zurich Insurance Company AG
- AS8903 Nextlevel Connectivity S.L.
- AS8968 BT Italia S.p.A.
- AS9183 Robert Bosch Gesellschaft mit Beschraenkter Haftung
- AS11757 Whirlpool Corporation
- AS12200 Rackspace Hosting
- AS12257 Dell Inc.
- AS12298 Qiagen GmbH
- AS12331 Audi AG
- AS12440 Hughes Network Systems GmbH
- AS12734 FCA Information Technology Excellence and Methods S.p.A.
- AS13130 Autostadt GmbH
- AS13205 British Telecommunications PLC
- AS13232 Portigon AG
- AS15410 BT Limited Magyarorszagi Fioktelepe
- AS15466 Defensie Telematica Organisatie
- AS15518 circular Informationssysteme GmbH
- AS16839 ServiceNow Inc.
- AS20561 Schaeffler Technologies AG & Co. KG
- AS20805 Gamma Holding GmbH
- AS20868 ABB Information Systems Ltd
- AS21000 Atos France SAS
- AS21489 The North Atlantic Treaty Organization
- AS22683 Koninklijke Philips N.V.
- AS25031 Novartis AG
- AS25049 Shell Information Technology International B.V.
- AS25261 Iberia Lineas Aereas de Espana Sociedad Anonima Operadora
- AS25481 Sycor GmbH
- AS26380 MasterCard Technologies LLC
- AS28879 Media-Saturn-Holding GmbH
- AS29063 Atos Nederland B.V.
- AS30614 Dell Inc.
- AS30864 Elavon Financial Services DAC
- AS31614 European Central Bank
- AS33873 arvato systems GmbH
- AS34311 LG CNS Europe B.V
- AS34460 PHOENIX Pharmahandel GmbH & Co KG
- AS35740 Euronet Services Kft
- AS35923 Johnson & Johnson
- AS36224 HCL America Inc
- AS40999 dus.net GmbH
- AS41321 Fujitsu Technology Solutions GmbH
- AS42249 TUEVRheinland Service GmbH
- AS42848 European Commission
- AS43033 Telio Communications GmbH
- AS43159 SISTEMA-4B
- AS43949 Marsh Limited
- AS48647 Solvay SA
- AS51466 Bridgestone Europe NV
- AS51527 Hyundai AutoEver Europe GmbH
- AS60112 Clarins SAS
- AS196636 Helaba Invest Kapitalanlagegesellschaft mbH
- AS197953 Vmware International Unlimited Company
- AS199541 Eurocontrol the European Organisation for the Safety of Air Navigation
- AS200500 Vesta Payment Solutions Limited
- AS202097 IBERMUTUA
- AS202666 International Flavors & Fragrances I.F.F. (Nederland) B.V
- AS202893 Signify Holding B.V.
- AS203990 Accertify Inc.
- AS206289 TSB Banking Group PLC
- AS206618 Volkswagen AG
- AS206625 Enterprise Holdings Inc.
- AS207180 HCL Technologies Germany GmbH
- AS208053 Clarins SAS
- AS209550 European External Action Service
- AS210324 Mazda Motor Logistics Europe NV
- AS212565 Specsavers Optical Group Limited
- AS394805 Reliaquest LLC
What is an Autonomous System (AS)?
An Autonomous System (AS) is a collection of connected networks that operate under a common administrative domain and share routing policies. Each AS is identified by a unique Autonomous System Number (ASN), which is used to exchange routing information with other ASs. AS can control how traffic flows through networks and then filter out unwanted traffic.
