Autonomous System details

AS5400

British Telecommunications PLC  ·  bt.com

United Kingdom

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

AS5400 – British Telecommunications PLC

Field Value
Country United Kingdom
Website bt.com
Hosted domains 822
IPv4 addresses 702,720
IPv6 addresses 72,183,355,235,701,059,312,510,000,000,000
ASN type ISP
Registry ripe
Allocated 24 years ago on Aug 29, 2002
Updated a month ago on Mar 18, 2026

IP Ranges

Netblock Company Num of IPs
62.134.0.0/16 British Telecommunications PLC 65,536
62.180.0.0/16 British Telecommunications PLC 65,536
195.100.0.0/16 British Telecommunications PLC 65,536
195.163.0.0/16 British Telecommunications PLC 65,536
206.73.0.0/16 INFONET Services Corporation 65,536
213.15.0.0/16 British Telecommunications PLC 65,536
62.5.0.0/17 British Telecommunications PLC 32,768
62.102.0.0/17 British Telecommunications PLC 32,768
166.49.128.0/17 communications networking services Private Unlimited Company 32,768
62.173.192.0/18 British Telecommunications PLC 16,384
212.162.192.0/18 British Telecommunications PLC 16,384
213.194.0.0/18 British Telecommunications PLC 16,384
213.236.64.0/18 British Telecommunications PLC 16,384
31.95.96.0/19 BT Global Fabric Customers 8,192
82.138.160.0/19 Amcor Flexibles Finland OY 8,192
82.150.0.0/19 British Telecommunications PLC 8,192
194.213.64.0/19 British Telecommunications PLC 8,192
195.90.64.0/19 British Telecommunications PLC 8,192
195.182.96.0/19 British Telecommunications PLC 8,192
206.73.0.0/19 INFONET Services Corporation 8,192
212.8.160.0/19 British Telecommunications PLC 8,192
212.21.192.0/19 British Telecommunications PLC 8,192
212.31.192.0/19 British Telecommunications PLC 8,192
212.41.128.0/19 British Telecommunications PLC 8,192
212.108.0.0/19 British Telecommunications PLC 8,192
212.127.0.0/19 British Telecommunications PLC 8,192
213.137.160.0/19 British Telecommunications PLC 8,192
31.95.16.0/20 BT Global Fabric Customers 4,096
31.95.160.0/20 BT Global Fabric Customers 4,096
80.255.160.0/20 BT Global Services Luxembourg S.a.r.l 4,096
195.99.64.0/20 British Telecommunications PLC 4,096
206.73.48.0/20 Frame-Relay Serial Interfaces 4,096
206.73.80.0/20 INFONET BRANCH OFFICE 4,096
31.95.0.0/21 BT Global Fabric Customers 2,048
31.95.48.0/21 BT Global Fabric Customers 2,048
62.172.0.0/21 British Telecommunications PLC 2,048
132.244.64.0/21 Rolls-Royce plc 2,048
132.244.72.0/21 Rolls-Royce plc 2,048
194.74.80.0/21 British Telecommunications PLC 2,048
185.94.0.0/22 British Telecommunications PLC 1,024
195.171.36.0/22 British Telecommunications PLC 1,024
206.73.112.0/22 PRIDE INTERNATIONAL 1,024
206.73.116.0/22 NALCO 1,024
31.95.218.0/23 BT Global Fabric Customers 512
46.248.8.0/23 TNT Express ICS Limited 512
46.248.10.0/23 TNT Express ICS Limited 512
193.58.130.0/23 TESSENDERLO CHEMIE INTERNATIONAL NV 512
203.158.68.0/23 BT Global Fabric customers 512
203.158.72.0/23 BT Global Fabric customers 512
203.158.76.0/23 BT Global Fabric customers 512
80.255.160.0/24 BT Global Services Luxembourg 256
80.255.161.0/24 BT Global Services Luxembourg 256
80.255.162.0/24 BT Global Services Luxembourg 256
132.244.240.0/24 Rolls-Royce plc 256
136.238.84.0/24 Schindler Informatik AG 256
136.238.85.0/24 Schindler Informatik AG 256
136.238.224.0/24 Schindler Informatik AG 256
185.249.4.0/24 Lumileds Holding B.V. 256
192.109.52.0/24 Thales Deutschland GmbH 256
193.202.26.0/24 Kantar GmbH 256
194.33.53.0/24 KANTAR DORMANT 3 LIMITED 256
194.33.54.0/24 KANTAR DORMANT 3 LIMITED 256
194.33.55.0/24 KANTAR DORMANT 3 LIMITED 256
194.50.160.0/24 Hyundai Motor Europe GmbH 256
194.76.40.0/24 Infonet Network Services Germany 256
194.107.114.0/24 CEVA France SASU 256
195.36.82.0/24 Computacenter AG & Co. oHG, Computacenter Park 1, 50170 Kerpen 256
195.60.182.0/24 DeLaval International AB 256
195.60.183.0/24 DeLaval International AB 256
195.66.70.0/24 Kia Europe GmbH 256
198.178.236.0/24 KANTAR 256
204.52.188.0/24 KANTAR 256

Netblock Company
2a00:2000::/23 British Telecommunications PLC
2a00:2200::/25 British Telecommunications PLC
2a00:2280::/25 British Telecommunications PLC
2a00:2300::/25 British Telecommunications PLC
2a0c:7c80::/29 Thales Deutschland GmbH
2001:740::/32 British Telecommunications PLC
2a00:2080::/32 BT Global Fabric Customers
2a00:2082::/32 BT Global Fabric Customers
2a00:2083::/32 BT Global Fabric Customers
2a00:2089::/32 BT Global Fabric Customers
2a00:208a::/32 BT Global Fabric Customers
2a00:208d::/32 BT Global Fabric Customers
2606:f100:d800::/38 BT Management Services
2606:f100:dc00::/38 BT Management Services
2606:f100:d000::/39 BT Management Services
2606:f100:d400::/39 BT Management Services
2606:f100:d600::/39 BT Management Services
2a00:2200:200::/40 British Telecommunications PLC
2a00:2200:300::/40 British Telecommunications PLC
2a00:2200:900::/40 British Telecommunications PLC
2a00:2200:b00::/40 British Telecommunications PLC
2a00:2200:d00::/40 British Telecommunications PLC
2a00:2200:2000::/40 British Telecommunications PLC
2a00:2200:5300::/40 British Telecommunications PLC

Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view WHOIS details › 

                                                ASHandle:       AS5400
                                                OrgID:          AS5400
                                                ASName:         AS5400
                                                ASNumber:       AS5400
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP WHOIS API & Database

Hosted Domains

There are 822 domain names hosted across 196 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
80.255.163.72 ██████████ 85
212.108.4.142 ██████████ 85
62.180.131.137 ██████████ 71
62.180.131.138 ██████████ 52
62.134.42.244 ██████████ 41
212.108.4.216 ██████████ 26
62.134.89.36 ██████████ 22
213.236.117.34 ██████████ 19
62.180.126.137 ██████████ 18
198.178.236.147 ██████████ 13

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API & Database

Peers

There are 137 peers for this ASN.

Peers Name
AS10780 Pure Storage, INC.
AS11164 Internet2
AS12257 Dell, Inc.
AS12298 QIAGEN GmbH
AS12331 Audi AG
AS12389 PJSC Rostelecom
AS12440 Hughes Network Systems GmbH
AS12552 GlobalConnect AB
AS1257 Tele2 Sverige AB
AS1267 WIND TRE S.P.A.
AS1273 Vodafone Group PLC
AS12734 Stellantis Auto SAS
AS12956 TELXIUS Cable
AS1299 Arelion Sweden AB
AS13030 Init7 (Switzerland) Ltd.
AS13130 Autostadt GmbH
AS13205 British Telecommunications PLC
AS14907 Wikimedia Foundation Inc.
AS15410 BT Limited Magyarorszagi Fioktelepe
AS15412 FLAG TELECOM UK LIMITED
AS15442 Procter & Gamble Service GmbH
AS15466 Commando Materieel en IT
AS15518 Circular Informationssysteme GmbH
AS16839 SERVICENOW, INC.
AS174 Cogent Communications, LLC
AS1828 Unitas Global
AS1836 green.ch AG
AS1853 ACONET
AS19151 BroadbandONE, LLC
AS199524 G-Core Labs S.A.
AS199541 EUROCONTROL, the European Organisation for the Safety of Air Navigation
AS200361 CONCENTRIX SERVICES BULGARIA EOOD
AS202097 IBERMUTUA
AS202666 International Flavors & Fragrances I.F.F. (Nederland) B.V
AS203990 Accertify LLC
AS20485 Joint Stock Company TransTeleCom
AS20561 Schaeffler Technologies AG & Co. KG
AS206625 Enterprise Holdings, Inc.
AS207180 HCL Technologies Germany GmbH
AS208053 Clarins SAS
AS20868 ABB Information Systems Ltd
AS21000 Atos France SAS
AS2110 Enet Communications LIMITED
AS212565 Specsavers Optical Group Limited
AS21320 GEANT Vereniging
AS21489 The North Atlantic Treaty Organization
AS22683 PHILIPS INTERNET
AS23764 CTGNet
AS24940 Hetzner Online GmbH
AS24961 WIIT AG
AS2497 Internet Initiative Japan Inc.
AS25049 Shell Information Technology International B.V.
AS2516 KDDI CORPORATION
AS25261 IBERIA LINEAS AEREAS DE ESPANA SOCIEDAD ANONIMA OPERADORA
AS26380 MasterCard Technologies LLC
AS27311 Biogen MA Inc
AS2856 British Telecommunications PLC
AS286 GTT Communications Inc.
AS28879 CECONOMY AG
AS29063 Eviden Netherlands B.V.
AS2914 NTT America, Inc.
AS30614 Dell, Inc.
AS30781 Free Pro SAS
AS30864 Elavon Financial Services DAC
AS31027 GlobalConnect A/S
AS31614 European Central Bank
AS3257 GTT Communications Inc.
AS32590 Valve Corporation
AS3303 Swisscom (Switzerland) Ltd
AS3320 Deutsche Telekom AG
AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS3356 Level 3 Parent, LLC
AS33873 Arvato Systems GmbH
AS33891 Core-Backbone GmbH
AS34311 LG CNS Europe B.V
AS34460 PHOENIX International Holdings GmbH
AS3491 PCCW Global (HK) Ltd.
AS35280 F5 Networks SARL
AS3573 Accenture LLP
AS37100 SEACOM Limited
AS37468 Angola Cables
AS38191 Infosys Technologies Ltd
AS39351 31173 Services AB
AS394805 ReliaQuest, LLC
AS40126 Molson Coors Beverage Company
AS40934 Fortinet Inc.
AS41095 IPTP LTD
AS4181 TDS TELECOM
AS42708 Glesys AB
AS42848 European Commission
AS43033 Telio Communications GmbH
AS43949 Marsh Limited
AS45489 Sri Lanka Telecom PLC, GLobal Peering
AS4637 Telstra Global
AS4766 Korea Telecom
AS4775 Globe Telecoms
AS48647 Solvay SA
AS49544 i3D.net B.V
AS50304 Blix Solutions AS
AS5091 Stripe, Inc.
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Upstreams

There are 15 upstreams for this ASN.

upstreams Name
AS12956 TELXIUS Cable
AS1299 Arelion Sweden AB
AS174 Cogent Communications, LLC
AS2914 NTT America, Inc.
AS3257 GTT Communications Inc.
AS3320 Deutsche Telekom AG
AS3356 Level 3 Parent, LLC
AS3491 PCCW Global (HK) Ltd.
AS4637 Telstra Global
AS5511 Orange S.A.
AS6453 TATA COMMUNICATIONS (AMERICA) INC
AS6461 Zayo Bandwidth
AS6762 TELECOM ITALIA SPARKLE S.p.A.
AS6830 Liberty Global Europe Holding B.V.
AS6939 Hurricane Electric LLC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Downstreams

There are 63 downstreams for this ASN.

Downstreams Name
AS10780 Pure Storage, INC.
AS12257 Dell, Inc.
AS12298 QIAGEN GmbH
AS12331 Audi AG
AS12440 Hughes Network Systems GmbH
AS12734 Stellantis Auto SAS
AS13130 Autostadt GmbH
AS13205 British Telecommunications PLC
AS15410 BT Limited Magyarorszagi Fioktelepe
AS15442 Procter & Gamble Service GmbH
AS15466 Commando Materieel en IT
AS15518 Circular Informationssysteme GmbH
AS16839 SERVICENOW, INC.
AS199541 EUROCONTROL, the European Organisation for the Safety of Air Navigation
AS200361 CONCENTRIX SERVICES BULGARIA EOOD
AS202097 IBERMUTUA
AS202666 International Flavors & Fragrances I.F.F. (Nederland) B.V
AS203990 Accertify LLC
AS20561 Schaeffler Technologies AG & Co. KG
AS206625 Enterprise Holdings, Inc.
AS207180 HCL Technologies Germany GmbH
AS208053 Clarins SAS
AS20868 ABB Information Systems Ltd
AS21000 Atos France SAS
AS2110 Enet Communications LIMITED
AS212565 Specsavers Optical Group Limited
AS21489 The North Atlantic Treaty Organization
AS22683 PHILIPS INTERNET
AS25049 Shell Information Technology International B.V.
AS25261 IBERIA LINEAS AEREAS DE ESPANA SOCIEDAD ANONIMA OPERADORA
AS26380 MasterCard Technologies LLC
AS27311 Biogen MA Inc
AS2856 British Telecommunications PLC
AS28879 CECONOMY AG
AS29063 Eviden Netherlands 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 International Holdings GmbH
AS3573 Accenture LLP
AS38191 Infosys Technologies Ltd
AS394805 ReliaQuest, LLC
AS40126 Molson Coors Beverage Company
AS40934 Fortinet Inc.
AS42848 European Commission
AS43033 Telio Communications GmbH
AS43949 Marsh Limited
AS48647 Solvay SA
AS5091 Stripe, Inc.
AS51046 Bringo Limited
AS51466 Bridgestone Europe NV
AS51527 AUTOEVER EUROPE
AS55290 Depository Trust & Clearing Corporation
AS59724 Elsevier Limited
AS60112 Clarins SAS
AS72 Schlumberger Limited
AS7246 Bristol-Myers Squibb Company
AS7734 Toronto Dominion Bank
AS8590 Bayerische Motoren Werke Aktiengesellschaft
AS8903 LYNTIA NETWORKS S.A.
AS8968 BT Italia S.p.A.
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Pingable IPs

439 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
62.134.205.65 AS5400 British Telecommunications PLC 16.84ms from Amsterdam, NL
166.49.198.5 AS5400 British Telecommunications PLC 1.32ms from Dublin, IE
195.182.104.17 AS5400 British Telecommunications PLC 1.33ms from Dublin, IE
2a00:2000:69::7 AS5400 British Telecommunications PLC 0.54ms from Frankfurt am Main, DE
80.255.163.1 AS5400 British Telecommunications PLC 5.39ms from Frankfurt am Main, DE
62.134.74.185 AS5400 British Telecommunications PLC 0.77ms from Frankfurt am Main, DE
166.49.226.134 AS5400 British Telecommunications PLC 0.58ms from Frankfurt am Main, DE
62.134.69.104 AS5400 British Telecommunications PLC 0.53ms from Frankfurt am Main, DE
213.137.182.37 AS5400 British Telecommunications PLC 1.09ms from Kloten, CH
31.95.6.36 AS5400 British Telecommunications PLC 1.08ms from London, GB
212.162.234.5 AS5400 British Telecommunications PLC 1.27ms from London, GB
166.49.231.89 AS5400 British Telecommunications PLC 8.34ms from Madrid, ES
212.21.198.121 AS5400 British Telecommunications PLC 2.94ms from Milan, IT
213.194.41.122 AS5400 British Telecommunications PLC 2.24ms from Milan, IT
212.21.194.225 AS5400 British Telecommunications PLC 1.20ms from Milan, IT
82.150.19.66 AS5400 British Telecommunications PLC 2.03ms from Paris, FR
212.41.135.114 AS5400 British Telecommunications PLC 1.65ms from Amsterdam, NL
62.180.193.1 AS5400 British Telecommunications PLC 0.59ms from Frankfurt am Main, DE
62.180.227.161 AS5400 British Telecommunications PLC 3.11ms from Frankfurt am Main, DE
62.134.55.193 AS5400 British Telecommunications PLC 11.99ms from Frankfurt am Main, DE
62.180.51.57 AS5400 British Telecommunications PLC 3.43ms from Frankfurt am Main, DE
166.49.145.156 AS5400 British Telecommunications PLC 0.72ms from Frankfurt am Main, DE
213.194.45.179 AS5400 British Telecommunications PLC 10.18ms from Milan, IT
195.163.87.12 AS5400 British Telecommunications PLC 0.70ms from Paris, FR
2a00:208a:: AS5400 British Telecommunications PLC 1.10ms from Paris, FR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
52.88.89.216 AS16509 Amazon.com, Inc. 0.23ms from Boardman, US
174.0.233.168 AS6327 Shaw Communications 4.27ms from Calgary, CA
91.14.239.56 AS3320 Deutsche Telekom AG 8.43ms from Frankfurt am Main, DE
91.56.112.56 AS3320 Deutsche Telekom AG 6.64ms from Frankfurt am Main, DE
222.251.171.136 AS23563 SK Broadband Co Ltd 2.02ms from Incheon, KR
20.254.97.104 AS8075 Microsoft Corporation 0.25ms from London, GB
190.28.231.216 AS13489 UNE EPM TELECOMUNICACIONES S.A. 2.37ms from Medellin, CO
79.30.192.104 AS3269 Telecom Italia S.p.A. 5.12ms from Milan, IT
70.163.30.232 AS22773 Cox Communications Inc. 0.78ms from Phoenix, US
81.200.248.216 AS41148 Zolotaya Linia JSC. 9.07ms from Samara, RU
175.214.108.248 AS4766 Korea Telecom 1.06ms from Seoul, KR
52.130.197.56 AS58593 Shanghai Blue Cloud Technology Co.,Ltd 2.65ms from Shanghai, CN
2.66.60.232 AS44034 Hi3G Access AB 8.80ms from Stockholm, SE
130.43.114.88 AS1241 Forthnet 12.14ms from Athens, GR
64.250.115.136 AS23367 Adaptive Data Networks, LLC 1.55ms from Atlanta, US
171.5.92.232 AS45758 Triple T Broadband Public Company Limited 5.25ms from Bangkok, TH
100.42.83.40 AS62643 Evertek, Inc 6.60ms from Des Moines, US
123.22.140.200 AS45899 VNPT Corp 5.88ms from Ho Chi Minh City, VN
111.73.235.136 AS4134 CHINANET BACKBONE 1.56ms from Nanchang, CN
49.69.233.184 AS4134 CHINANET BACKBONE 6.07ms from Nanjing, CN
45.47.236.72 AS11351 Charter Communications Inc 18.29ms from New York City, US
68.192.85.40 AS6128 Cablevision Systems Corp. 1.88ms from New York City, US
23.219.66.152 AS20940 Akamai International B.V. 0.10ms from Osasco, BR
89.168.51.72 AS31898 Oracle Corporation 0.18ms from Paris, FR
76.138.168.8 AS7922 Comcast Cable Communications, LLC 8.19ms from Portland, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f2 -m12 195.163.240.36
traceroute to 195.163.240.36 (195.163.240.36): 12 hops max, 52 byte packets
3 *
4 *
5 *
6 [] 193.149.1.43 67.55 ms
7 [AS5400] 166.49.237.181 67.462 ms
8 [AS5400] 166.49.195.50 75.198 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Abidjan, CI
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS5400 at robtex.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs