AS number details

AS3300

British Telecommunications PLC  ·  bt.com

United Kingdom

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AS3300 – British Telecommunications PLC

Field Value
Country United Kingdom
Website bt.com
Hosted domains 52
Number of IPv4 513,280
Number of IPv6 236,446,547,503,507,632,505,732,726,784
ASN type ISP
Registry ripe
Allocated 23 years ago on Sep 19, 2002
Updated a month ago on Oct 16, 2025

IP Ranges

Netblock Company Num of IPs
205.248.0.0/16 INFONET Services Corporation 65,536
206.182.0.0/16 INFONET Services Corporation 65,536
207.117.0.0/16 INFONET Services Corporation 65,536
207.209.0.0/16 INFONET Services Corporation 65,536
209.28.0.0/16 INFONET Services Corporation 65,536
204.231.0.0/17 INFONET Services Corporation 32,768
61.14.0.0/18 Infonet Services Corporation 16,384
63.250.128.0/18 INFONET Services Corporation 16,384
192.237.64.0/18 INFONET Services Corporation 16,384
198.207.64.0/18 INFONET Services Corporation 16,384
199.6.64.0/18 INFONET Services Corporation 16,384
204.140.64.0/18 INFONET Services Corporation 16,384
204.231.128.0/18 INFONET Services Corporation 16,384
206.182.128.0/18 INFONET Services Corporation 16,384
206.182.192.0/18 INFONET Services Corporation 16,384
192.92.32.0/19 INFONET Services Corporation 8,192
203.187.128.0/19 BT-Infonet, Internet Service Provider 8,192
207.209.0.0/19 INFONET Services Corporation 8,192
207.209.64.0/19 INFONET Services Corporation 8,192
72.29.128.0/20 INFONET Services Corporation 4,096
192.157.144.0/20 INTERLEAF 4,096
192.92.24.0/21 Infonet Services Corporation / INFONET Technology Services 2,048
192.157.136.0/21 TEXAS INSTRUMENTS 2,048
61.14.4.0/22 BT GIA 1,024
61.14.8.0/22 BT GIA 1,024
61.14.12.0/22 BT GIA 1,024
61.14.20.0/22 Infonet Services Corporation 1,024
61.14.24.0/22 BT HK 1,024
61.14.28.0/22 BT GIA 1,024
61.14.32.0/22 BT GIA 1,024
61.14.36.0/22 BT-GIA-JP-net 1,024
61.14.40.0/22 BT ZA 1,024
61.14.44.0/22 BT-ZA 1,024
61.14.48.0/22 BT ZA 1,024
63.250.128.0/22 INFONET Services Corporation 1,024
63.250.132.0/22 INFONET Services Corporation 1,024
63.250.136.0/22 mainsoft 1,024
63.250.140.0/22 INFONET Services Corporation 1,024
63.250.144.0/22 INFONET Services Corporation 1,024
63.250.148.0/22 INFONET Services Corporation 1,024
63.250.152.0/22 INFONET Services Corporation 1,024
63.250.156.0/22 LG CNS CO. LTD 1,024
63.250.160.0/22 INFONET Services Corporation 1,024
63.250.168.0/22 INFONET Services Corporation 1,024
63.250.176.0/22 British Telecom 1,024
63.250.180.0/22 British Telecom 1,024
63.250.184.0/22 h muehlstein and co inc 1,024
72.29.132.0/22 INFONET Services Corporation 1,024
192.92.20.0/22 INFONET Services Corporation 1,024
192.157.132.0/22 POSTIPAN 1,024
198.207.64.0/22 COTY 1,024
198.207.72.0/22 ESKO-GRAPHICS BVBA 1,024
198.207.76.0/22 ESKO-GRAPHICS BVBA 1,024
203.187.128.0/22 BT-GIA 1,024
61.14.2.0/23 BT GIA 512
192.92.80.0/23 INFONET Services Corporation 512
192.157.130.0/23 INFONET Services Corporation 512
192.157.160.0/23 INFONET Services Corporation 512
61.14.1.0/24 BT GIA 256
61.14.7.0/24 SIMMONS & SIMMONS 256
61.14.11.0/24 BT GIA 256
61.14.15.0/24 BT GIA 256
61.14.31.0/24 BT GIA 256
61.14.34.0/24 BT GIA 256
61.14.36.0/24 BT-GIA-JP-net 256
61.14.39.0/24 BT-GIA-JP-net 256
61.14.52.0/24 Bt GIA 256
63.250.131.0/24 SCHINDLER HOLDING 256
63.250.132.0/24 DIGITPA 256
63.250.135.0/24 INFONET Services Corporation 256
63.250.144.0/24 STELLANTIS 256
63.250.147.0/24 INFONET Services Corporation 256
63.250.155.0/24 TRIVIUM PACKAGING BV 256
63.250.159.0/24 COTY 256
63.250.163.0/24 SPECSAVERS OPTICAL GROUP LIMITED 256
63.250.164.0/24 INFONET Services Corporation 256
63.250.171.0/24 ATRADIUS 256
63.250.172.0/24 INFONET Services Corporation 256
63.250.173.0/24 INFONET Services Corporation 256
63.250.174.0/24 Philips 256
63.250.187.0/24 MOTHERSON SUMI INFOTECH AND DESIGN LIMITED 256
63.250.189.0/24 Esaress Intl Group Inc 256
63.250.191.0/24 DP DHL ETO 256
136.238.168.0/24 Schindler Informatik AG 256
136.238.185.0/24 Schindler Informatik AG 256
136.238.187.0/24 Schindler Informatik AG 256
136.238.229.0/24 Schindler Informatik AG 256
136.238.232.0/24 Schindler Informatik AG 256
136.238.238.0/24 Schindler Informatik AG 256
136.238.239.0/24 Schindler Informatik AG 256
136.238.240.0/24 Schindler Informatik AG 256
136.238.241.0/24 Schindler Informatik AG 256
136.238.243.0/24 Schindler Informatik AG 256
185.249.5.0/24 Lumileds Holding B.V. 256
185.249.6.0/24 Lumileds Holding B.V. 256
192.92.18.0/24 BT CUSTOMER 256
192.92.19.0/24 BT CUSTOMER 256
192.92.82.0/24 INFONET Services Corporation 256
194.33.52.0/24 KANTAR DORMANT 3 LIMITED 256
195.206.69.0/24 British Telecommunications PLC 256
195.206.70.0/24 British Telecommunications PLC 256
198.137.75.0/24 INFONET Services Corporation 256
198.178.237.0/24 KANTAR 256
198.178.239.0/24 KANTAR 256
203.187.145.0/24 BT GIA SNG 256
203.187.146.0/24 BT GIA SNG 256
204.52.187.0/24 KANTAR 256
204.79.84.0/24 INFONET Services Corporation 256
206.182.134.0/24 LEGIONS OF CHRIST 256
206.182.164.0/24 INFONET SOFTWARE SOLUTIONS 256
209.28.174.0/24 Internal-FW 256

Netblock Company
2402:fb00::/32 Infonet Services Corporation
2606:f100::/32 BT Management Services
2402:fb00::/36 Infonet Services Corporation
2402:fb00:1000::/36 Infonet Services Corporation
2402:fb00:2000::/36 Infonet Services Corporation
2402:fb00:3000::/36 Infonet Services Corporation
2606:f100::/36 BT Management Services
2606:f100:1000::/36 BT Management Services
2606:f100:2000::/36 BT Management Services
2606:f100:3000::/36 BT Management Services
2606:f100:4000::/36 BT Management Services
2606:f100:5000::/36 BT Management Services
2606:f100:6000::/36 BT Management Services
2606:f100:7000::/36 BT Management Services
2606:f100:8000::/36 BT Management Services
2606:f100:9000::/36 BT Management Services
2606:f100:c000::/36 BT Management Services
2402:fb00:f00::/40 Infonet Services Corporation
2402:fb00:1f00::/40 Lumileds
2402:fb00:2f00::/40 Infonet Services Corporation
2402:fb00:3f00::/40 Infonet Services Corporation
2606:f100:f00::/40 BT Management Services
2606:f100:1f00::/40 BT Management Services
2606:f100:2f00::/40 BT Management Services
2606:f100:3f00::/40 BT Management Services
2606:f100:4f00::/40 BT Management Services
2606:f100:5f00::/40 BT Management Services
2606:f100:7f00::/40 BT Management Services
2606:f100:8f00::/40 BT Management Services

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IP Ranges API

WHOIS Details

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                                                ASHandle:       AS3300
                                                OrgID:          AS3300
                                                ASName:         AS3300
                                                ASNumber:       AS3300
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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IP Whois API & Database

Hosted Domains

There are 52 domain names hosted across 31 IP addresses on this ASN.

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IP Address Domain Domains on this IP
207.209.182.183 ██████████ 14
198.178.239.130 ██████████ 4
192.237.77.36 ██████████ 3
204.52.187.84 ██████████ 2
204.52.187.154 ██████████ 2
203.187.142.169 ██████████ 2
192.157.130.154 ██████████ 1
198.178.239.79 ██████████ 1
198.178.239.196 ██████████ 1
203.187.142.182 ██████████ 1

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Hosted Domains API & Database

Peers

There are 124 peers for this ASN.

Peers Name
AS1031 PEER 1031 LLC
AS11271 SENCINET LATAM BRASIL LTDA
AS11845 Vox Telecom Ltd
AS12200 Rackspace Hosting
AS1299 Arelion Sweden AB
AS132337 Axclusive
AS133782 Elsevier Ltd
AS136767 BMW AG (Bayerische Motoren Werke Aktiengesellschaft)
AS1403 EBOX
AS140627 OneQode
AS141399 Specsavers Pty Ltd
AS14840 BR.Digital Provider
AS14907 Wikimedia Foundation Inc.
AS151326 DCConnect Communication Pte. Ltd.
AS16552 Tiggee LLC
AS16735 ALGAR TELECOM S/A
AS18106 Viewqwest Pte Ltd
AS1828 Unitas Global
AS19151 BroadbandONE, LLC
AS1916 Rede Nacional de Ensino e Pesquisa
AS19812 BT Americas, Inc
AS198150 SIACOM JSC
AS199524 G-Core Labs S.A.
AS212565 Specsavers Optical Group Limited
AS22548 Núcleo de Inf. e Coord. do Ponto BR - NIC.BR
AS22652 Videotron Ltee
AS22683 PHILIPS INTERNET
AS23764 CTGNet
AS24482 SG.GS
AS2497 Internet Initiative Japan Inc.
AS2518 BIGLOBE Inc.
AS262427 Invista Net Provedor de Acesso Ltda
AS262462 Aranet Play
AS263009 FORTE TELECOM LTDA.
AS263152 MIGO TELECOM
AS263237 PowerHost Telecom SPA
AS263541 IMF NETWORK DATA LTDA - ME
AS26380 MasterCard Technologies LLC
AS264479 Turbozone Internet
AS26478 Novartis Pharmaceuticals
AS267613 ELETRONET S.A.
AS268976 Weclix Telecom S/A
AS269180 VIPNET Conexão
AS27000 Coty Inc.
AS271253 LINK BRASIL TELECOMUNICACOES LTDA
AS28624 PROVEDORA CMA INTERNET LTDA
AS28634 Life Tecnologia Ltda.
AS29049 Delta Telecom Ltd
AS2914 NTT America, Inc.
AS30844 Liquid Telecommunications Ltd
AS31713 Gateway Communications
AS32590 Valve Corporation
AS328320 Kurlec Wireless (PTY) Ltd
AS3303 Swisscom (Switzerland) Ltd
AS33891 Core-Backbone GmbH
AS3491 PCCW Global, Inc.
AS35280 F5 Networks SARL
AS35923 Johnson & Johnson Consumer Inc.
AS36224 HCL AMERICA INC
AS36236 NetActuate, Inc
AS37100 SEACOM Limited
AS3741 Dimension Data
AS37468 Angola Cables
AS37697 WEBMASTERS, LDA.
AS38008 Aperture Science Limited
AS38195 Superloop
AS39120 Convergenze S.p.A.
AS393493 Lotte Biologics USA, LLC
AS399449 Kyndryl
AS40126 Molson Coors Beverage Company
AS40659 BMW of North America, LLC (Group Data Centers America)
AS40934 Fortinet Inc.
AS4230 CLARO S.A.
AS42473 Anexia Cloud Solutions GmbH
AS45187 Rackspace IT Hosting AS IT Hosting Provider Hong Kong
AS45352 IP ServerOne Solutions Sdn Bhd
AS45489 Sri Lanka Telecom PLC, GLobal Peering
AS45796 UIH / BB Connect
AS4635 Hong Kong Internet Exchange--Route Server 1
AS4637 Telstra Global
AS4657 StarHub Ltd
AS4766 Korea Telecom
AS4826 Vocus Connect International Backbone
AS48647 Solvay SA
AS49544 i3D.net B.V
AS51185 MainStreaming SpA
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S.
AS52468 UFINET PANAMA S.A.
AS52863 UPX TECNOLOGIA LTDA
AS52873 Softdados Telecomunicações
AS53062 ALT | GRUPO BRASIL TECPAR
AS53202 Acesso10 Telecom
AS55290 Depository Trust & Clearing Corporation
AS55720 Gigabit Hosting Sdn Bhd
AS56665 Proximus Luxembourg S.A.
AS57304 JSC "RetnNet"
AS57463 NetIX Communications JSC
AS58057 Securebit AG
AS58453 China Mobile International Limited
AS58511 Anycast Global Backbone
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ASN API & Database

Upstreams

There are 11 upstreams for this ASN.

upstreams Name
AS11271 SENCINET LATAM BRASIL LTDA
AS1299 Arelion Sweden AB
AS2914 NTT America, Inc.
AS30844 Liquid Telecommunications Ltd
AS3491 PCCW Global, Inc.
AS4637 Telstra Global
AS4657 StarHub Ltd
AS6461 Zayo Bandwidth
AS6762 TELECOM ITALIA SPARKLE S.p.A.
AS6830 Liberty Global B.V.
AS6939 Hurricane Electric LLC
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ASN API & Database

Downstreams

There are 22 downstreams for this ASN.

Downstreams Name
AS133782 Elsevier Ltd
AS136767 BMW AG (Bayerische Motoren Werke Aktiengesellschaft)
AS141399 Specsavers Pty Ltd
AS19812 BT Americas, Inc
AS212565 Specsavers Optical Group Limited
AS22683 PHILIPS INTERNET
AS26380 MasterCard Technologies LLC
AS26478 Novartis Pharmaceuticals
AS27000 Coty Inc.
AS35923 Johnson & Johnson Consumer Inc.
AS36224 HCL AMERICA INC
AS393493 Lotte Biologics USA, LLC
AS399449 Kyndryl
AS40126 Molson Coors Beverage Company
AS40659 BMW of North America, LLC (Group Data Centers America)
AS45187 Rackspace IT Hosting AS IT Hosting Provider Hong Kong
AS48647 Solvay SA
AS55290 Depository Trust & Clearing Corporation
AS6220 inContact Inc.
AS72 Schlumberger Limited
AS7246 Bristol-Myers Squibb Company
AS78 BT Americas, Inc
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
61.14.52.65 AS3300 British Telecommunications PLC 0.55ms from Hong Kong, HK
61.14.33.129 AS3300 British Telecommunications PLC 37.66ms from Hong Kong, HK
61.14.41.208 AS3300 British Telecommunications PLC 0.19ms from Johannesburg, ZA
61.14.43.2 AS3300 British Telecommunications PLC 5.30ms from Johannesburg, ZA
63.250.148.14 AS3300 British Telecommunications PLC 0.61ms from Dallas, US
63.250.185.1 AS3300 British Telecommunications PLC 0.21ms from Miami, US
63.250.157.161 AS3300 British Telecommunications PLC 0.34ms from Ashburn, US
2606:f100:10ff:fffe::1f AS3300 British Telecommunications PLC 0.72ms from Los Angeles, US
63.250.171.30 AS3300 British Telecommunications PLC 9.61ms from New York City, US
61.14.30.125 AS3300 British Telecommunications PLC 0.51ms from Singapore, SG
2402:fb00:ff14:1::2 AS3300 British Telecommunications PLC 48.99ms from Tokyo, JP
63.250.161.241 AS3300 British Telecommunications PLC 0.51ms from Toronto, CA
61.14.32.185 AS3300 British Telecommunications PLC 1.38ms from Hong Kong, HK
203.187.145.9 AS3300 British Telecommunications PLC 1.41ms from Hong Kong, HK
63.250.186.7 AS3300 British Telecommunications PLC 0.19ms from Miami, US
63.250.164.197 AS3300 British Telecommunications PLC 0.76ms from San Jose, US
203.187.128.125 AS3300 British Telecommunications PLC 0.66ms from Singapore, SG
2402:fb00:ff00::1d AS3300 British Telecommunications PLC 1.53ms from Tokyo, JP
63.250.158.6 AS3300 British Telecommunications PLC 0.28ms from Ashburn, US
2606:f100:30ff:fffe::1f AS3300 British Telecommunications PLC 1.97ms from Osasco, BR
61.14.29.42 AS3300 British Telecommunications PLC 0.76ms from Singapore, SG
2402:fb00:20ff:ffff::2 AS3300 British Telecommunications PLC 1.71ms from Tokyo, JP
2606:f100:50ff:ffff::1 AS3300 British Telecommunications PLC 0.60ms from Chicago, US
63.250.177.9 AS3300 British Telecommunications PLC 10.52ms from Los Angeles, US
63.250.178.169 AS3300 British Telecommunications PLC 0.76ms from Los Angeles, US

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
125.236.253.36 AS4771 Spark New Zealand Trading Ltd. 1.37ms from Auckland, NZ
44.226.18.52 AS16509 Amazon.com, Inc. 0.14ms from Boardman, US
104.177.50.164 AS7018 AT&T Enterprises, LLC 1.85ms from Chicago, US
13.58.32.212 AS16509 Amazon.com, Inc. 0.14ms from Columbus, US
86.51.79.164 AS35819 Etihad Etisalat, a joint stock company 2.71ms from Jeddah, SA
172.119.13.36 AS20001 Charter Communications Inc 6.90ms from Los Angeles, US
79.150.50.36 AS3352 TELEFONICA DE ESPANA S.A.U. 10.57ms from Madrid, ES
24.187.214.100 AS6128 Cablevision Systems Corp. 5.41ms from New York City, US
216.194.119.196 AS13767 DataBank Holdings, Ltd. 1.01ms from Salt Lake City, US
115.23.141.36 AS4766 Korea Telecom 1.26ms from Seoul, KR
190.172.78.100 AS22927 Telefonica de Argentina 2.03ms from Buenos Aires, AR
167.7.154.52 AS2939 State of South Carolina 3.27ms from Charlotte, US
223.152.166.164 AS4134 CHINANET-BACKBONE 5.02ms from Chenzhou, CN
115.238.218.84 AS136190 JINHUA, ZHEJIANG Province, P.R.China. 10.61ms from Hangzhou, CN
67.245.91.212 AS12271 Charter Communications Inc 6.77ms from New York City, US
217.16.190.212 AS43541 VSHosting s.r.o. 0.24ms from Prague, CZ
125.226.78.196 AS3462 Data Communication Business Group 5.34ms from Taipei, TW
2.49.68.196 AS5384 Emirates Internet 2.29ms from Al Fujairah City, AE
102.177.146.20 AS174 Cogent Communications, LLC 7.16ms from Amsterdam, NL
69.142.153.116 AS7922 Comcast Cable Communications, LLC 8.10ms from Ashburn, US
140.179.164.132 AS55960 Beijing Guanghuan Xinwang Digital 3.43ms from Beijing, CN
69.66.0.20 AS7029 Windstream Communications LLC 0.40ms from Chicago, US
27.148.231.4 AS4134 CHINANET-BACKBONE 5.88ms from Fuzhou, CN
112.93.79.36 AS17816 China Unicom IP network China169 Guangdong province 2.77ms from Guangzhou, CN
1.95.195.244 AS55990 Huawei Cloud Service data center 0.97ms from Guiyang, CN

Traceroute

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

$
traceroute -a -n -q1 -m12 209.28.80.142
traceroute to 209.28.80.142 (209.28.80.142): 12 hops max, 52 byte packets
1 [AS2901] 198.59.104.2 0.214 ms
2 [AS2901] 198.59.96.134 0.134 ms
3 [AS2901] 198.59.96.128 0.243 ms
4 *
5 *
8 [AS3300] 195.206.70.97 18.047 ms
9 [AS3300] 195.206.70.117 33.364 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Albuquerque, US
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 AS3300 at robtex.

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