AS5400

BT BT aka (British Telecom) - Updated 02 Jun 2026 12:02 Tue

Organization:		BT / BT
Also Known As:		British Telecom
Company Website:		http://www.bt.net
Company Looking Glass:		http://lg.bt.net/
Peer Counts:		72
Network Counts:		99

AS5400 IPv4 Peers

AS285653.23
AS89689.68
AS21108.47
AS1740.81
AS67620.81
AS132050.4
AS117570.4
AS263800.4
AS2039900.4
AS2071800.4
AS2062890.4
AS2095500.4

Rank	Description	Peer
132	BT-UK-AS BTnet (BT's UK IP Network - AS2856)	AS2856
24	BT-Italia BT Italia	AS8968
21	AS-BTIRE BT Ireland	AS2110
2	COGENT Cogent Communications, Inc.	AS174
2	SEABONE-NET Telecom Italia Sparkle	AS6762
1	UNSPECIFIED British Telecommunications PLC	AS13205
1	WHR-AS Whirlpool Corporation	AS11757
1	AS-26380 MasterCard Technologies LLC	AS26380
1	acc_eu Accertify, inc.	AS203990
1	hud Hoenigsberg & Duevel Datentechnik GmbH	AS207180
1	sabis TSB BANKING GROUP PLC	AS206289
1	EEAS European External Action Service	AS209550

Prefix	Description	Country
62.5.0.0/17	BT
62.102.0.0/17	BT
62.134.0.0/16	BT
62.172.0.0/21	PROVIDER
62.173.192.0/18	BT
62.180.0.0/16	BT
77.72.239.0/24	BT
80.255.160.0/20	BT
80.255.160.0/24	BT
80.255.161.0/24	BT Global Services Luxembourg
80.255.162.0/24	BT Global Services Luxembourg
82.138.160.0/19	BT
82.150.0.0/19	BT
132.244.64.0/21	Derby, DE24 8BJ
132.244.72.0/21	Derby, DE24 8BJ
132.244.240.0/24	Derby, DE24 8BJ
136.238.84.0/24	BT
136.238.85.0/24	BT
136.238.224.0/24	BT
137.133.22.0/24	ABB, Lodz, ul. Aleksandrowska 67/93
166.49.128.0/17	EC1A 7AJ
167.184.183.0/24	BT
167.184.184.0/21	BT
167.184.192.0/21	BT
167.184.200.0/23	BT
167.184.202.0/24	BT
168.252.132.0/24	Orica Australia Pty Ltd
168.252.133.0/24	Orica Australia Pty Ltd
206.73.0.0/16	BT
208.161.224.0/19	BT
46.248.8.0/23	NOS BE Public Subnet 1
46.248.10.0/23	NOS BE Public Subnet 2
170.255.0.0/16	BT
185.94.0.0/22	BT
185.249.4.0/24	BT
192.48.2.0/23	BT
192.48.16.0/23	BT
192.48.22.0/24	BT
192.48.24.0/24	BT
192.48.26.0/24	BT
192.109.52.0/24	BT
193.38.176.0/23	BT
193.58.130.0/23	BT
193.141.192.0/19	Renesas Electronics Europe GmbH, Duesseldorf (formerly known as NEC Electronics)
194.50.160.0/24	BT
194.74.80.0/21	PROVIDER
194.76.40.0/24	German affiliate of Infonet Network Services
194.213.64.0/19	BT
195.66.70.0/24	BT
195.90.64.0/19	BT
195.99.64.0/20	PROVIDER
195.100.0.0/16	BT
195.163.0.0/16	BT
195.171.36.0/22	PROVIDER
195.182.96.0/19	BT
212.8.160.0/19	BT
212.21.192.0/19	BT
212.31.192.0/19	BT
212.41.128.0/19	BT
212.49.131.0/24	BT Telecomunicaciones
212.49.132.0/24	BT Telecomunicaciones
212.49.142.0/24	BT
212.49.147.0/24	BT
212.49.163.0/24	BT
212.49.167.0/24	BT
212.49.168.0/24	BT
212.49.175.0/24	BT
212.49.181.0/24	BT
212.49.190.0/24	BT
212.49.191.0/24	BT
212.108.0.0/19	BT
212.127.0.0/19	BT
212.162.192.0/18	BT
212.163.3.0/24	BT
212.163.6.0/24	BT
212.163.24.0/24	BT
212.163.40.0/24	BT
212.163.42.0/24	BT
212.163.55.0/24	BT Telecomunicaciones
212.163.141.0/24	BT Telecomunicaciones
212.163.169.0/24	BT Telecomunicaciones
212.163.174.0/24	BT Telecomunicaciones
212.163.194.0/24	BT
212.163.206.0/24	THALES INFORMATION SYSTEMS, S.A.
212.163.215.0/24	BT
213.9.138.0/24	BT
213.9.148.0/24	BT
213.9.160.0/24	BT Telecomunicaciones
213.9.173.0/24	BT
213.9.177.0/24	BT
213.9.188.0/24	BT
213.9.195.0/24	BT
213.9.232.0/24	BT Telecomunicaciones
213.15.0.0/16	BT
213.31.181.0/24	PHOENIXITSER_0001_01007442
213.137.160.0/19	BT
213.194.0.0/18	BT
213.236.64.0/18	BT
192.48.13.0/24	BT

Rank	Description	Peer
132	BT-UK-AS BTnet (BT's UK IP Network - AS2856)	AS2856
24	BT-Italia BT Italia	AS8968
21	AS-BTIRE BT Ireland	AS2110
2	COGENT Cogent Communications, Inc.	AS174
2	SEABONE-NET Telecom Italia Sparkle	AS6762
1	UNSPECIFIED British Telecommunications PLC	AS13205
1	WHR-AS Whirlpool Corporation	AS11757
1	AS-26380 MasterCard Technologies LLC	AS26380
1	acc_eu Accertify, inc.	AS203990
1	hud Hoenigsberg & Duevel Datentechnik GmbH	AS207180
1	sabis TSB BANKING GROUP PLC	AS206289
1	EEAS European External Action Service	AS209550
1	Lighting-INTERNET Signify Holding B.V.	AS202893
1	PHOENIX-AS PHOENIX Pharmahandel GmbH & Co KG	AS34460
1	Clarins-HQ CLARINS SA	AS60112
1	COMPUTACENTER-FRANCE BT France	AS5436
1	Telio-Communications-GmbH Telio Communications GmbH	AS43033
1	AS_ESAG Elmos Semiconductor AG	AS34982
1	Bridgestone-Europe-AS Bridgestone Europe NV	AS51466
1	SYCOR SYCOR GmbH	AS25481
1	Autostadt Volkswagen AG	AS13130
1	SHAPE-AS The North Atlantic Treaty Organization	AS21489
1	SATURN-MEDIA-AS Media-Saturn-Holding GmbH	AS28879
1	TUEV_RHEINLAND_AS TUEVRheinland Service GmbH	AS42249
1	IBERIA	AS25261
1	LG-AS LG CNS Europe B.V	AS34311
1	EURONET Euronet Services Kft	AS35740
1	Elavon-Financial-Services-DAC_AS ELAVON FINANCIAL SERVICES LIMITED	AS30864
1	AS8903 Evolutio Cloud Enabler	AS8903
1	CIRC-AS circular Informationssysteme	AS15518
1	HFONETZ HFO Telecom AG	AS20805
1	IBERMUTUA	AS202097
1	SISTEMA-4B	AS43159
1	MMC Marsh Ireland Brokers Limited	AS43949
1	TTNet Turk Telekom	AS9121
1	Vesta-DUB	AS200500
1	ZFS-GROUP Zurich Insurance Company	AS8640
1	Fujitsu-TS-SOP-AS Fujitsu Technology Solutions GmbH	AS41321
1	DELL	AS30614
1	SPECSAVERS Specsavers Optical Group Limited	AS212565
1	ASN-DTO Defensie Telematica Organisatie	AS15466
1	BT_Hungary British Telecommunications PLC	AS15410
1	AS12440 Hughes Network Systems	AS12440
1	EHI-AME-AS	AS206625
1	FUTURESPACE Mazda Motor Logistics Europe NV	AS210324
1	DUSNET-AS dus.net GmbH	AS40999
1	Atos-NL-AS Atos Nederland B.V.	AS29063
1	arvato-systems-AS arvato systems	AS33873
1	IFF_CPH	AS202666
1	AUTOEVER-EUROPE Hyundai AutoEver Europe GmbH	AS51527
1	QIAGEN-AS QIAGEN GmbH	AS12298
1	Clarins-HQ CLARINS SA	AS208053
1	WestLB Portigon AG	AS13232
1	Schlumberger Limited	AS72
1	STASCO-UK-AS	AS25049
1	ABB ABB Information Systems Ltd	AS20868
1	UNSPECIFIED Robert Bosch Gesellschaft mit Beschraenkter Haftung	AS9183
1	VOLKSWAGEN Volkswagen AG	AS206618
1	VMW-IE VMware International Ltd.	AS197953
1	EUROCONTROL-AS EUROCONTROL, the European Organisation for the Safety of Air Navigation	AS199541
1	Service-now.com	AS16839
1	SOLVAY	AS48647
1	FIAT-AS1 Fiat Information Technology, Excellence and Methods S.p.A	AS12734
1	EMC	AS12257
1	EC-AS European Commission	AS42848
1	AS20561-INA Schaeffler Technologies AG & Co. KG	AS20561
1	NOVARTIS-CH Novartis AG	AS25031
1	PHILIPS-INTERNET Koninklijke Philips	AS22683
1	HCL HCL Technologies Ltd	AS36224
1	UNSPECIFIED	AS13063