AS number details

AS2856

British Telecommunications PLC  ·  bt.com

United Kingdom

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AS2856 – British Telecommunications PLC

Field Value
Country United Kingdom
Website bt.com
Hosted domains 29,310
Number of IPv4 12,768,768
Number of IPv6 10,141,209,637,529,113,670,490,324,467,712
ASN type ISP
Registry ripe
Allocated 23 years ago on Aug 30, 2002
Updated 4 months ago on May 15, 2025

IP Ranges

Netblock Company Num of IPs
86.128.0.0/10 British Telecommunications PLC 4,194,304
81.128.0.0/11 British Telecommunications PLC 2,097,152
86.128.0.0/11 BT Infrastructure Layer 2,097,152
109.144.0.0/12 British Telecommunications PLC 1,048,576
217.32.0.0/12 British Telecommunications PLC 1,048,576
81.128.0.0/12 BT Infrastructure Layer 1,048,576
86.128.0.0/12 IP pools 1,048,576
31.48.0.0/13 British Telecommunications PLC 524,288
95.144.0.0/13 EE Limited 524,288
147.148.0.0/14 British Telecommunications plc 262,144
194.72.0.0/14 British Telecommunications PLC 262,144
213.120.0.0/14 PROVIDER Local Internet Registry 262,144
31.112.0.0/14 EE Limited 262,144
109.180.0.0/15 EE Limited 131,072
31.126.0.0/15 BT Retail 131,072
31.90.0.0/15 EE Limited 131,072
31.92.0.0/15 EE Limited 131,072
5.80.0.0/15 British Telecommunications PLC 131,072
132.146.0.0/16 British Telecom 65,536
147.152.0.0/16 British Telecommunications plc 65,536
165.120.0.0/16 BT Public Internet Service 65,536
193.113.0.0/16 British Telecommunications PLC 65,536
195.171.0.0/16 British Telecommunications PLC 65,536
195.99.0.0/16 British Telecommunications PLC 65,536
212.140.0.0/16 British Telecommunications PLC 65,536
213.1.0.0/16 British Telecommunications PLC 65,536
31.104.0.0/16 BT-CENTRAL-PLUS 65,536
31.117.0.0/16 EE Limited 65,536
31.118.0.0/16 EE Limited 65,536
31.119.0.0/16 BTnet Assignments 65,536
31.120.0.0/16 EE Limited 65,536
31.121.0.0/16 BTnet Assignments 65,536
31.94.0.0/16 EE Limited 65,536
31.96.0.0/16 EE Limited 65,536
51.14.0.0/16 BT-CENTRAL-PLUS 65,536
5.81.0.0/16 BT Infrastructure Layer 65,536
62.172.0.0/16 British Telecommunications PLC 65,536
62.239.0.0/16 British Telecommunications PLC 65,536
62.6.0.0/16 BT Infrastructure Layer 65,536
62.7.0.0/16 BT Infrastructure Layer 65,536
144.87.128.0/18 Royal Mail Group Limited 16,384
159.180.96.0/19 BT-CENTRAL-PLUS 8,192
193.38.192.0/19 Co-operative Group Limited 8,192
194.102.0.0/19 British Telecommunications PLC 8,192
195.218.32.0/19 British Telecommunications PLC 8,192
212.82.0.0/19 British Telecommunications PLC 8,192
84.23.0.0/19 i3 Digital Ltd 8,192
144.87.16.0/20 Royal Mail Group Limited 4,096
193.37.160.0/20 British Telecommunications PLC 4,096
213.205.208.0/20 Orange PCS GPRS Services 4,096
217.15.64.0/20 British Telecommunications PLC 4,096
51.230.0.0/20 Department for Work and Pensions 4,096
51.230.112.0/20 Department for Work and Pensions 4,096
51.230.16.0/20 Department for Work and Pensions 4,096
51.230.32.0/20 Department for Work and Pensions 4,096
51.230.48.0/20 Department for Work and Pensions 4,096
51.230.64.0/20 Department for Work and Pensions 4,096
51.230.80.0/20 Department for Work and Pensions 4,096
51.230.96.0/20 Department for Work and Pensions 4,096
85.88.224.0/20 The Cloud Simplified Limited 4,096
144.87.0.0/21 Royal Mail Group Limited 2,048
144.87.24.0/21 Royal Mail Group Limited 2,048
178.78.112.0/21 KCOM BT sub-allocation 2,048
178.78.120.0/21 KCOM BT sub-allocation 2,048
188.172.160.0/21 232web Internet Services 2,048
188.172.168.0/21 232web Internet Services 2,048
194.169.32.0/21 AgustaWestland Ltd 2,048
5.35.192.0/21 Lunarnaut, LLC 2,048
94.72.248.0/21 KCOM BT sub-allocation 2,048
116.66.140.0/22 Cognizant Technology Solution India Pvt Ltd, India Net block 1,024
144.87.24.0/22 Royal Mail Group Limited 1,024
144.87.28.0/22 Royal Mail Group Limited 1,024
145.79.172.0/22 Private Customer 1,024
147.189.68.0/22 FTIP003165225 1,024
147.189.76.0/22 FTIP003902813 1,024
147.78.68.0/22 Hop Bilisim Teknolojileri Anonim Sirketi 1,024
151.240.180.0/22 Private Customer 1,024
151.240.184.0/22 Private Customer 1,024
151.240.188.0/22 Private Customer 1,024
151.240.192.0/22 Private Customer 1,024
151.240.196.0/22 Private Customer 1,024
151.240.200.0/22 Private Customer 1,024
151.241.180.0/22 Private Customer 1,024
151.241.184.0/22 Private Customer 1,024
151.241.188.0/22 Private Customer 1,024
151.241.192.0/22 Private Customer 1,024
151.241.196.0/22 Private Customer 1,024
151.241.200.0/22 Private Customer 1,024
151.241.52.0/22 Private Customer 1,024
151.241.56.0/22 Private Customer 1,024
151.241.60.0/22 Private Customer 1,024
151.244.204.0/22 Private Customer 1,024
151.244.208.0/22 Private Customer 1,024
151.244.80.0/22 Private Customer 1,024
151.245.204.0/22 Private Customer 1,024
151.245.208.0/22 Private Customer 1,024
151.245.80.0/22 Private Customer 1,024
15.145.20.0/22 Amazon Data Services UK 1,024
164.38.120.0/22 Currys Retail Ltd. 1,024
164.38.16.0/22 Currys Retail Ltd. 1,024
164.38.184.0/22 Currys Retail Ltd. 1,024
167.148.60.0/22 Private Customer 1,024
178.78.108.0/22 BSi #349 1,024
178.92.112.0/22 Private Customer 1,024
178.92.180.0/22 Uni Broadband LLC 1,024
178.93.104.0/22 Private Customer 1,024
178.93.192.0/22 Uni Broadband LLC 1,024
178.94.244.0/22 Uni Broadband LLC 1,024
178.95.60.0/22 Uni Broadband LLC 1,024
185.68.200.0/22 Nibs Solutions Ltd 1,024
185.90.32.0/22 BI Worldwide Ltd 1,024
193.187.140.0/22 Hop Bilisim Teknolojileri Anonim Sirketi 1,024
193.35.220.0/22 Cambridge Consultants Limited 1,024
193.38.192.0/22 Co-operative Group Limited 1,024
194.32.20.0/22 Northern Ireland Civil Service 1,024
213.249.188.0/22 Technology Business Centre #614 1,024
217.217.36.0/22 Private Customer 1,024
217.217.56.0/22 Private Customer 1,024
217.217.60.0/22 Private Customer 1,024
37.97.112.0/22 Welt-Net Broadband 1,024
46.248.96.0/22 Burstfire Networks Ltd 1,024
72.9.180.0/22 TELUS Communications Inc. 1,024
81.161.52.0/22 Welt-Net Broadband 1,024
85.204.160.0/22 Lunarnaut, LLC 1,024
94.232.100.0/22 Welt-Net Broadband 1,024
142.205.162.0/23 Toronto Dominion Bank 512
144.177.74.0/23 AKER SOLUTIONS ASA 512
148.253.220.0/23 Department for Environment, Food and Rural Affairs 512
152.114.220.0/23 ZELLIS UK LIMITED 512
152.114.222.0/23 ZELLIS UK LIMITED 512
157.236.254.0/23 Avon & Somerset Constabulary 512
159.253.66.0/23 Technology Business centre #753 512
178.212.56.0/23 Volta Central London's Data Centre 512
178.78.106.0/23 Eclipse Internet - Bluewave Internet Limted #683 512
185.177.64.0/23 Leidos Innovations UK LTD 512
193.35.158.0/23 Local Government Network 512
193.35.160.0/23 Local Government Network 512
193.38.192.0/23 Co-operative Group Limited 512
193.38.194.0/23 Co-operative Group Limited 512
205.239.40.0/23 DXC US Latin America Corporation 512
213.190.16.0/23 Northern Trust Corporation 512
213.190.18.0/23 Northern Trust Corporation 512
217.31.10.0/23 CSC Computer Sciences Ltd 512
31.130.240.0/23 Volta Central London's Data Centre 512
45.149.168.0/23 Private Customer 512
45.149.170.0/23 Private Customer 512
46.248.104.0/23 Burstfire Networks Ltd 512
46.248.124.0/23 Burstfire Networks Ltd 512
46.248.126.0/23 Burstfire Networks Ltd 512
82.136.54.0/23 Burstfire Networks Ltd 512
85.88.240.0/23 Xperience Group 512
89.145.172.0/23 Leidos Innovations UK LTD 512
89.39.172.0/23 Lunarnaut, LLC 512
91.236.216.0/23 Pro Marketing Central LLC 512
94.26.64.0/23 Lunarnaut, LLC 512
109.205.158.0/24 BONTBLOCK 256
132.153.244.0/24 Atomic Weapons Establishment 256
132.153.245.0/24 Atomic Weapons Establishment 256
132.153.246.0/24 Atomic Weapons Establishment 256
132.153.247.0/24 Atomic Weapons Establishment 256
132.153.248.0/24 Atomic Weapons Establishment 256
132.153.249.0/24 Atomic Weapons Establishment 256
132.153.250.0/24 Atomic Weapons Establishment 256
132.153.251.0/24 Atomic Weapons Establishment 256
132.153.252.0/24 Atomic Weapons Establishment 256
132.153.253.0/24 Atomic Weapons Establishment 256
132.153.254.0/24 Atomic Weapons Establishment 256
132.153.3.0/24 Atomic Weapons Establishment 256
138.108.94.0/24 Nielsen Consumer LLC 256
143.223.132.0/24 British Telecommunications PLC 256
148.252.3.0/24 Department for Environment, Food and Rural Affairs 256
148.252.7.0/24 Department for Environment, Food and Rural Affairs 256
149.117.130.0/24 Synopsys Inc. 256
149.254.1.0/24 T-Mobile(UK) Erith WAP Production-Lan 256
152.114.196.0/24 ZELLIS UK LIMITED 256
156.146.3.0/24 Kate Spade Holdings LLC 256
157.236.254.0/24 Avon & Somerset Constabulary 256
157.236.255.0/24 Avon & Somerset Constabulary 256
159.197.13.0/24 4000 Parkway 256
159.197.44.0/24 4000 Parkway 256
159.197.45.0/24 4000 Parkway 256
163.5.115.0/24 Private Customer 256
163.5.122.0/24 Private Customer 256
163.5.208.0/24 Private Customer 256
163.5.217.0/24 Private Customer 256
163.5.222.0/24 Private Customer 256
163.5.249.0/24 Private Customer 256
163.5.37.0/24 Private Customer 256
163.5.67.0/24 Private Customer 256
163.5.98.0/24 Private Customer 256
164.134.1.0/24 NHS National Services Scotland 256
164.134.134.0/24 NHS National Services Scotland 256
164.134.135.0/24 NHS National Services Scotland 256
164.134.136.0/24 NHS National Services Scotland 256
164.134.137.0/24 NHS National Services Scotland 256
164.134.138.0/24 NHS National Services Scotland 256
164.38.12.0/24 Currys Retail Ltd. 256
164.38.134.0/24 Currys Retail Ltd. 256
164.38.148.0/24 Currys Retail Ltd. 256
164.38.149.0/24 Currys Retail Ltd. 256
164.38.156.0/24 Currys Retail Ltd. 256
164.38.196.0/24 Currys Retail Ltd. 256
164.38.197.0/24 Currys Retail Ltd. 256
164.38.2.0/24 Currys Retail Ltd. 256
164.38.31.0/24 Currys Retail Ltd. 256
164.38.32.0/24 Currys Retail Ltd. 256
164.38.33.0/24 Currys Retail Ltd. 256
164.38.34.0/24 Currys Retail Ltd. 256
185.128.205.0/24 Sagentia Ltd 256
185.149.6.0/24 Avis Budget Services Ltd. 256
185.156.48.0/24 Cheshire Datasystems Limited 256
185.58.165.0/24 NHS National Services Scotland 256
192.152.14.0/24 Aircraft Research Association Limited 256
192.53.46.0/24 DXC US Latin America Corporation 256
192.65.219.0/24 British Telecom 256
192.65.221.0/24 British Telecom 256
192.65.222.0/24 British Telecom 256
192.65.223.0/24 British Telecom 256
192.65.224.0/24 British Telecom 256
192.65.225.0/24 British Telecom 256
192.65.226.0/24 British Telecom 256
192.65.227.0/24 British Telecom 256
192.65.228.0/24 British Telecom 256
192.8.112.0/24 HCL AMERICA INC 256
192.8.149.0/24 HCL AMERICA INC 256
193.111.18.0/24 RapidSeedbox Ltd 256
193.111.19.0/24 RapidSeedbox Ltd 256
193.111.4.0/24 RapidSeedbox Ltd 256
193.111.5.0/24 RapidSeedbox Ltd 256
193.138.107.0/24 Standard Life Employee Services Ltd. 256
193.195.138.0/24 VODAFONE ENTERPRISE EQUIPMENT LIMITED 256
193.23.32.0/24 Bayerische Motoren Werke Aktiengesellschaft 256
193.28.232.0/24 TEVA UK HOLDINGS LIMITED 256
193.32.39.0/24 Sir Robert McAlpine Ltd 256
193.32.46.0/24 Virgin Money plc 256
193.32.48.0/24 Virgin Money plc 256
193.33.199.0/24 VirtualTin Limited 256
193.35.197.0/24 Broadcast and Satellite Services 256
193.36.240.0/24 ALLEN OVERY SHEARMAN STERLING LLP 256
193.36.243.0/24 ALLEN OVERY SHEARMAN STERLING LLP 256
193.36.253.0/24 ALLEN OVERY SHEARMAN STERLING LLP 256
193.36.80.0/24 EE Limited 256
193.37.142.0/24 COMPUTER SERVICE CENTRE LTD 256
193.39.141.0/24 AWE PLC 256
193.84.142.0/24 Napp Pharmaceutical Holdings Limited 256
194.132.24.0/24 WSP Europe 256
194.132.25.0/24 WSP Europe 256
194.155.58.0/24 Dorset Healthcare NHS Trust (RDY) 256
194.189.44.0/24 Central Notts Healthcare Trust 256
194.227.120.0/24 York Teaching Hospital NHS Foundation Trust (RCB) 256
194.227.72.0/24 BUCKINGHAMSHIRE COUNTY COUNCIL 256
194.227.73.0/24 BUCKINGHAMSHIRE COUNTY COUNCIL 256
194.246.78.0/24 CAMELOT UK LOTTERIES LIMITED 256
194.32.29.0/24 Northern Ireland Civil Service 256
194.32.31.0/24 Northern Ireland Civil Service 256
194.36.135.0/24 Hitachi Europe Ltd 256
194.36.68.0/24 ITV Services Limited 256
194.59.188.0/24 World Conservation Monitoring Centre 256
194.60.136.0/24 Local Government Network 256
194.60.137.0/24 Local Government Network 256
194.60.138.0/24 Local Government Network 256
194.60.139.0/24 Local Government Network 256
194.70.94.0/24 Dabs Direct PLC 256
195.104.240.0/24 YORK HOSPITALS NHS FOUNDATION TRUST (RCB) 256
195.130.11.0/24 UK Ministry of Defence 256
195.130.12.0/24 UK Ministry of Defence 256
195.130.13.0/24 UK Ministry of Defence 256
195.130.14.0/24 UK Ministry of Defence 256
195.130.15.0/24 UK Ministry of Defence 256
195.130.3.0/24 MODNET Internet 256
195.130.6.0/24 UK Ministry of Defence 256
195.182.62.0/24 The Football Association Ltd. 256
195.35.123.0/24 Head Office 256
195.88.20.0/24 Walsall Metropolitan Borough Council 256
198.178.235.0/24 KANTAR 256
198.232.43.0/24 Sidley Austin LLP 256
205.239.42.0/24 DXC US Latin America Corporation 256
206.193.176.0/24 ELC Management LLC - ELC Security Operations 256
212.148.1.0/24 OXFORD UNIVERSITY HOSPITALS NHS FOUNDATION TRUST (RTH) 256
213.209.146.0/24 K&K Kommunikationssysteme GmbH 256
213.209.149.0/24 K&K Kommunikationssysteme GmbH 256
216.120.189.0/24 British Telecommunications PLC 256
216.165.88.0/24 NYU London 256
217.177.33.0/24 Private Customer 256
217.31.9.0/24 CSC Computer Sciences Ltd 256
37.230.61.0/24 Private Customer 256
45.149.7.0/24 Private Customer 256
46.68.66.0/24 Orange PCS GPRS Services 256
51.230.255.0/24 Department for Work and Pensions 256
5.83.212.0/24 lemon softpry Inc 256
5.83.213.0/24 lemon softpry Inc 256
77.94.224.0/24 EU-NISSAN-BIZ-SUN 256
82.140.134.0/24 Code200 256
82.140.138.0/24 Code200 256
82.140.143.0/24 Code200 256
82.140.170.0/24 Code200 256
82.153.181.0/24 Private Customer 256
82.153.190.0/24 Private Customer 256
82.153.238.0/24 Private Customer 256
82.153.33.0/24 Private Customer 256
83.138.19.0/24 Threadneedle Asset Management Holdings Ltd 256
84.46.177.0/24 Code200 256
84.46.181.0/24 Code200 256
84.46.183.0/24 Code200 256
84.46.188.0/24 Code200 256
84.46.190.0/24 Code200 256
84.46.191.0/24 Code200 256
84.46.194.0/24 Code200 256
84.55.17.0/24 Private Customer 256
84.55.22.0/24 Private Customer 256
85.116.11.0/24 Burstfire Networks Ltd 256
85.235.123.0/24 DMZ at Bacton Data Centre 256
86.110.57.0/24 Private Customer 256
86.38.118.0/24 Code200 256
86.38.123.0/24 Code200 256
86.38.148.0/24 Code200 256
86.38.193.0/24 Code200 256
86.38.233.0/24 Code200 256
86.38.244.0/24 Code200 256
86.38.56.0/24 Code200 256
86.38.63.0/24 Code200 256
86.38.65.0/24 Code200 256
86.38.67.0/24 Code200 256
86.38.68.0/24 Code200 256
86.38.86.0/24 Code200 256
86.38.93.0/24 Code200 256
86.54.81.0/24 ELEVEN HOLDINGS LIMITED 256
89.117.183.0/24 Code200 256
89.117.198.0/24 Code200 256
89.117.203.0/24 Code200 256
89.117.235.0/24 Code200 256
91.102.189.0/24 Moneysupermarket.com Limited 256
91.102.190.0/24 Moneysupermarket.com Limited 256
91.102.191.0/24 Moneysupermarket.com Limited 256
91.142.128.0/24 Elekta Limited 256
91.227.78.0/24 Ashridge (Bonar Law Memorial) Trust 256
91.230.16.0/24 Dairy Crest Ltd 256
91.230.40.0/24 BEST - BANCO ELECTRONICO DE SERVICO TOTAL, S.A. 256
91.90.125.0/24 M247 LTD 256
91.90.127.0/24 M247 LTD 256
94.125.16.0/24 Tesco Stores Ltd 256
94.125.17.0/24 Tesco Stores Ltd 256
94.125.18.0/24 Tesco Stores Ltd 256
94.125.19.0/24 Tesco Stores Ltd 256

Netblock Company
2a00:2380::/25 British Telecom BTnet Management container
2001:4878:c259::/48 Akamai Technologies, Inc.
2a01:4c8:f400::/48 EE Limited
2a01:4c8:f401::/48 EE Limited
2a03:1e82:90ff::/48 Bayerische Motoren Werke Aktiengesellschaft
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WHOIS Details

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                                                ASHandle:       AS2856
                                                OrgID:          AS2856
                                                ASName:         AS2856
                                                ASNumber:       AS2856
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 29,310 domain names hosted across 10,612 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
213.123.60.239 ██████████ 1,529
213.1.238.126 ██████████ 1,405
81.145.31.210 ██████████ 881
194.72.108.26 ██████████ 673
194.73.113.100 ██████████ 413
213.1.214.233 ██████████ 300
213.1.238.125 ██████████ 261
81.145.16.13 ██████████ 260
81.145.31.217 ██████████ 251
213.1.214.231 ██████████ 248

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Peers

There are 251 peers for this ASN.

Peers Name
AS11031 Orbis Investments (Canada) Limited
AS11528 Photronics Inc.
AS11939 THE MATHWORKS, INC.
AS12200 Rackspace Hosting
AS12222 Akamai Technologies, Inc.
AS12440 Hughes Network Systems GmbH
AS12576 EE Ltd
AS1267 WIND TRE S.P.A.
AS12713 OTEGlobe
AS13009 Redcentric Solutions Ltd
AS13030 Init7 (Switzerland) Ltd.
AS13037 Zen Internet Ltd
AS131993 QUINNOX-IN
AS13205 British Telecommunications PLC
AS13213 UK-2 Limited
AS13237 euNetworks GmbH
AS13458 Davidson Kempner Capital Management LLC
AS137409 GSL Networks Pty LTD
AS14630 Invesco Group Services, Inc.
AS14766 Magnetar Capital LLC
AS14931 The St. Paul Travelers Companies, Inc.
AS15141 Bausch & Lomb
AS15248 Metaswitch Networks Corp.
AS15412 FLAG TELECOM UK LIMITED
AS15499 Computacenter Management GmbH trading as Computacenter AG & Co.oHG
AS15557 Societe Francaise Du Radiotelephone - SFR SA
AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
AS15865 Elliott Advisors UK (Ltd)
AS16265 LeaseWeb Network B.V.
AS16276 OVH SAS
AS16477 Nielsen Consumer LLC
AS16525 KBR
AS1680 Cellcom Fixed Line Communication L.P
AS16839 SERVICENOW, INC.
AS17274 Robert W. Baird & Co. Incorporated
AS17639 Converge ICT Solutions Inc.
AS17903 Cognizant Technology Solutions India Pvt Ltd,
AS1828 Unitas Global
AS19254 Koch Industries, Inc.
AS19305 Transaction Network Services, Inc.
AS19428 Phillips 66 Company
AS197409 Co-operative Group Limited
AS197568 PINNACLE INSURANCE MANAGEMENT SERVICES PLC
AS198032 Cambridge Assessment
AS19812 BT Americas, Inc
AS198300 FES Ltd
AS198386 THRIVE OPERATIONS LIMITED
AS199262 Transport for London
AS199524 G-Core Labs S.A.
AS199675 Willis Group Services Ltd
AS200614 COHESITY INTERNATIONAL UK LIMITED
AS200961 FIL INVESTMENT MANAGEMENT LIMITED
AS201126 CDW Ltd
AS201536 Sandyx Systems Limited
AS20163 Sunrise Medical, Inc.
AS202206 FAT MEDIA LTD
AS202275 Gaming Technology Solutions Ltd.
AS202466 QBE Management Services (UK) Limited
AS20253 Qwilt Inc.
AS202907 Atomic IT Limited
AS203171 Chi Technology Ltd
AS204322 New York Times Limited
AS204550 Continental Limited
AS20464 HP Inc.
AS20473 The Constant Company, LLC
AS204819 WPM Software Ltd
AS205114 The WEST Retail group LImited
AS205693 Driver & Vehicle Licensing Agency
AS206051 ARAMARK N.V
AS206132 ABBOTT RAPID DX INTERNATIONAL LIMITED
AS206146 PAYSEND TECHNOLOGY LIMITED
AS206166 Schroder Investment Management Limited
AS206237 Barclays Bank PLC
AS206467 Protech Communications Ltd
AS206686 Nominet UK
AS20695 Capital One (Europe) Plc
AS20705 HSBC Bank plc
AS207087 Pay360 Ltd
AS207273 Pharoah Tools Limited
AS207552 Cambridge Consultants Limited
AS20860 IOMART CLOUD SERVICES LIMITED
AS209258 TSYS Europe (Netherlands) B.V.
AS20940 Akamai International B.V.
AS209761 North of England Commissioning Support Unit
AS209997 SECURITAS TECHNOLOGY LIMITED
AS21054 Natwest Markets PLC
AS210988 London Borough Of Hammersmith & Fulham
AS21110 Entain Corporate Services Limited
AS211303 Electronic Arts Limited
AS211389 Briant Broadband Limited
AS2119 Telenor Norge AS
AS21218 EBC Group (UK) Ltd
AS212329 Netcraft Ltd
AS212565 Specsavers Optical Group Limited
AS212655 YouFibre Limited
AS21296 Pricewaterhousecoopers Services Limited
AS21301 Natwest Markets PLC
AS2134 Santander Global Technology, S.L.U
AS21369 Atos IT Services UK Ltd
AS213867 TENERITY LIMITED
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Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS5400 British Telecommunications PLC
AS6461 Zayo Bandwidth
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Downstreams

There are 149 downstreams for this ASN.

Downstreams Name
AS11031 Orbis Investments (Canada) Limited
AS11528 Photronics Inc.
AS11939 THE MATHWORKS, INC.
AS12222 Akamai Technologies, Inc.
AS12440 Hughes Network Systems GmbH
AS12576 EE Ltd
AS131993 QUINNOX-IN
AS13205 British Telecommunications PLC
AS13458 Davidson Kempner Capital Management LLC
AS14630 Invesco Group Services, Inc.
AS14766 Magnetar Capital LLC
AS14931 The St. Paul Travelers Companies, Inc.
AS15141 Bausch & Lomb
AS15248 Metaswitch Networks Corp.
AS15499 Computacenter Management GmbH trading as Computacenter AG & Co.oHG
AS15865 Elliott Advisors UK (Ltd)
AS16477 Nielsen Consumer LLC
AS16525 KBR
AS17274 Robert W. Baird & Co. Incorporated
AS17903 Cognizant Technology Solutions India Pvt Ltd,
AS19254 Koch Industries, Inc.
AS19305 Transaction Network Services, Inc.
AS19428 Phillips 66 Company
AS197409 Co-operative Group Limited
AS197568 PINNACLE INSURANCE MANAGEMENT SERVICES PLC
AS19812 BT Americas, Inc
AS198300 FES Ltd
AS198386 THRIVE OPERATIONS LIMITED
AS199262 Transport for London
AS199675 Willis Group Services Ltd
AS200614 COHESITY INTERNATIONAL UK LIMITED
AS200961 FIL INVESTMENT MANAGEMENT LIMITED
AS201536 Sandyx Systems Limited
AS20163 Sunrise Medical, Inc.
AS202206 FAT MEDIA LTD
AS202907 Atomic IT Limited
AS203171 Chi Technology Ltd
AS204322 New York Times Limited
AS204550 Continental Limited
AS20464 HP Inc.
AS204819 WPM Software Ltd
AS205114 The WEST Retail group LImited
AS205693 Driver & Vehicle Licensing Agency
AS206051 ARAMARK N.V
AS206132 ABBOTT RAPID DX INTERNATIONAL LIMITED
AS206146 PAYSEND TECHNOLOGY LIMITED
AS206166 Schroder Investment Management Limited
AS206237 Barclays Bank PLC
AS206467 Protech Communications Ltd
AS206686 Nominet UK
AS20695 Capital One (Europe) Plc
AS20705 HSBC Bank plc
AS207087 Pay360 Ltd
AS207273 Pharoah Tools Limited
AS207552 Cambridge Consultants Limited
AS209258 TSYS Europe (Netherlands) B.V.
AS209761 North of England Commissioning Support Unit
AS209997 SECURITAS TECHNOLOGY LIMITED
AS21054 Natwest Markets PLC
AS210988 London Borough Of Hammersmith & Fulham
AS21110 Entain Corporate Services Limited
AS211303 Electronic Arts Limited
AS211389 Briant Broadband Limited
AS21218 EBC Group (UK) Ltd
AS212329 Netcraft Ltd
AS212565 Specsavers Optical Group Limited
AS21296 Pricewaterhousecoopers Services Limited
AS21301 Natwest Markets PLC
AS2134 Santander Global Technology, S.L.U
AS21369 Atos IT Services UK Ltd
AS213867 TENERITY LIMITED
AS213885 Wilxite Ltd
AS21464 EDF Trading Ltd
AS21470 South West Communications Group Ltd
AS21758 Modine Manufacturing Company
AS22775 Moore Capital Management
AS24775 Qinetiq Limited
AS25049 Shell Information Technology International B.V.
AS25050 VOCALINK LTD
AS25343 Coventry University Computing Services
AS2535 BP America, Inc.
AS25421 John Lewis Plc.
AS25585 Kencomp Internet Ltd
AS2559 VISA INTERNATIONAL SERVICE ASSOCIATION
AS28863 Thales UK Limited
AS29033 Eckoh UK Limited
AS31003 Iron Mountain Europe (Group) Limited
AS33001 Cravath, Swaine & Moore LLP
AS33127 Integrated Systems Corp
AS33442 Zebra Technologies Corporation
AS33680 TELEPERFORMANCE USA
AS33981 Total System Services Processing Europe Limited
AS35350 UCB Pharma S.A.
AS35707 Scottish Power UK PLC
AS3573 Accenture LLP
AS36224 HCL AMERICA INC
AS3738 State Street Bank and Trust Company
AS38191 Infosys Technologies Ltd
AS38936 Herman Miller LTD
AS3917 Shell Information Technology International B.V.
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Pingable IPs

95,129 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
2a00:23c7:c6ad:6100::1 AS2856 British Telecommunications PLC 19.48ms from Coventry, GB
2a00:23c7:6b97:3300::1 AS2856 British Telecommunications PLC 10.14ms from Coventry, GB
2a00:23cc:f504:2400::1 AS2856 British Telecommunications PLC 9.61ms from Coventry, GB
2a00:23c7:be2d:4f00::1 AS2856 British Telecommunications PLC 14.57ms from London, GB
2a00:23c7:906e:e900::1 AS2856 British Telecommunications PLC 13.98ms from London, GB
2a00:23c8:6497:f600::1 AS2856 British Telecommunications PLC 8.81ms from London, GB
2a00:23c8:a6a6:7e00::1 AS2856 British Telecommunications PLC 7.20ms from London, GB
2a00:23a8:88b:7f00::1 AS2856 British Telecommunications PLC 5.12ms from London, GB
86.159.124.1 AS2856 British Telecommunications PLC 7.86ms from London, GB
2a00:23c5:5352:4200::1 AS2856 British Telecommunications PLC 6.53ms from London, GB
2a00:23c5:c378:ba00::1 AS2856 British Telecommunications PLC 6.26ms from London, GB
2a00:23c7:5748:6a00::1 AS2856 British Telecommunications PLC 6.26ms from London, GB
86.165.155.88 AS2856 British Telecommunications PLC 4.65ms from London, GB
2a00:23c7:430e:8600::1 AS2856 British Telecommunications PLC 12.03ms from London, GB
2a00:23c6:92c0:dd00::1 AS2856 British Telecommunications PLC 6.79ms from London, GB
81.140.87.160 AS2856 British Telecommunications PLC 1.73ms from London, GB
86.129.148.182 AS2856 British Telecommunications PLC 3.22ms from London, GB
2a00:23c8:27ab:a500::1 AS2856 British Telecommunications PLC 6.98ms from London, GB
86.131.199.21 AS2856 British Telecommunications PLC 5.47ms from London, GB
81.132.86.176 AS2856 British Telecommunications PLC 3.27ms from London, GB
2a00:23c7:9797:a800::1 AS2856 British Telecommunications PLC 5.69ms from London, GB
2a00:23c7:cf13:aa00:9618:65ff:fee4:498a AS2856 British Telecommunications PLC 4.80ms from London, GB
109.154.118.110 AS2856 British Telecommunications PLC 1.82ms from London, GB
2a00:23c7:5c61:ca00::1 AS2856 British Telecommunications PLC 6.40ms from London, GB
2a00:23c7:c882:b700::1 AS2856 British Telecommunications PLC 9.41ms from London, GB

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
82.78.114.152 AS8708 DIGI ROMANIA S.A. 7.13ms from Bucharest, RO
62.224.138.72 AS3320 Deutsche Telekom AG 3.14ms from Duesseldorf, DE
88.67.222.104 AS3209 Vodafone GmbH 17.53ms from Frankfurt am Main, DE
79.209.61.152 AS3320 Deutsche Telekom AG 4.59ms from Frankfurt am Main, DE
46.159.80.216 AS12389 PJSC Rostelecom 1.24ms from Krasnodar, RU
218.24.26.248 AS4837 CHINA UNICOM China169 Backbone 5.61ms from Liaoyang, CN
86.167.108.120 AS2856 British Telecommunications PLC 4.81ms from London, GB
47.180.106.88 AS5650 Frontier Communications of America, Inc. 4.63ms from Los Angeles, US
38.153.240.200 AS174 Cogent Communications 0.49ms from Montreal, CA
176.193.173.104 AS12714 PJSC MegaFon 1.54ms from Moscow, RU
121.81.83.56 AS17511 OPTAGE Inc. 2.06ms from Osaka, JP
86.208.120.72 AS3215 Orange S.A. 6.22ms from Paris, FR
166.113.114.248 AS53449 OEC Fiber 6.91ms from Richardson, US
178.69.142.72 AS12389 PJSC Rostelecom 11.13ms from Saint Petersburg, RU
43.213.130.120 AS16509 Amazon.com, Inc. 0.22ms from Taipei, TW
126.115.183.152 AS17676 SoftBank Corp. 8.44ms from Tokyo, JP
172.210.152.232 AS8075 Microsoft Corporation 0.43ms from Boydton, US
18.191.60.232 AS16509 Amazon.com, Inc. 0.15ms from Columbus, US
52.180.199.200 AS8075 Microsoft Corporation 1.07ms from Des Moines, US
139.6.64.232 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 4.32ms from Frankfurt am Main, DE
2.221.97.136 AS5607 Sky UK Limited 5.66ms from London, GB
81.57.128.40 AS29447 SCALEWAY S.A.S. 1.85ms from Milan, IT
124.227.239.216 AS4134 CHINANET-BACKBONE 5.36ms from Nanning, CN
122.209.177.168 AS17506 ARTERIA Networks Corporation 1.13ms from Osaka, JP
133.117.99.72 AS7670 Enecom,Inc. 7.80ms from Osaka, JP

Traceroute

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

$
traceroute -a -n -q1 -f5 81.136.243.39
traceroute to 81.136.243.39 (81.136.243.39): 64 hops max, 52 byte packets
5 [AS174] 154.54.62.113 74.534 ms
6 [AS174] 154.54.61.214 125.412 ms
7 *
8 *
9 [AS174] 154.54.75.42 133.96 ms
10 *
11 *
12 *
13 [AS2856] 213.121.192.81 154.507 ms
14 *
15 *
16 *
17 [AS2856] 81.136.243.39 162.048 ms
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 AS2856 at robtex.

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