Autonomous System details

AS13205

British Telecommunications PLC  ·  bt.com

United Kingdom

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AS13205 – British Telecommunications PLC

Field Value
Country United Kingdom
Website bt.com
Hosted domains 113
IPv4 addresses 17,664
IPv6 addresses 0
ASN type ISP
Registry ripe
Allocated 56 years ago on Jan 01, 1970
Updated 8 years ago on Nov 15, 2017

IP Ranges

Netblock Company Num of IPs
217.140.32.0/19 British Telecommunications PLC 8,192
78.109.0.0/20 British Telecommunications PLC 4,096
217.140.0.0/20 BT DCS Amsterdam International Data Centre 4,096
217.140.12.0/22 BT Global Services DCS Hempoint Data Centre 1,024
31.11.56.0/23 BT DCS Niewegein Data Centre 512
137.213.252.0/23 Sopra Steria Limited 512
78.109.0.0/24 BT DCS Hempoint Data Centre 256
78.109.5.0/24 BT DCS Amsterdam International Data Centre 256
78.109.6.0/24 BT Global Services DCS Hempoint Data Centre 256
78.109.7.0/24 BT DCS BT DCS Hempoint Data Centre 256
78.109.9.0/24 BT Dual Site Internet 256
78.109.10.0/24 BT DCS Amsterdam International Data Centre 256
78.109.11.0/24 BT DCS Amsterdam International Data Centre 256
137.213.239.0/24 Sopra Steria Limited 256
217.140.12.0/24 BT Global Services DCS Hempoint Data Centre 256
217.140.13.0/24 BT Global Services DCS Colo for teleconcept.nl 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS13205
                                                OrgID:          AS13205
                                                ASName:         AS13205
                                                ASNumber:       AS13205
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 113 domain names hosted across 16 IP addresses on this ASN.

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IP Address Domain Domains on this IP
217.140.4.135 ██████████ 56
217.140.32.156 ██████████ 21
217.140.46.98 ██████████ 8
217.140.43.163 ██████████ 7
217.140.42.182 ██████████ 4
217.140.33.38 ██████████ 4
217.140.39.31 ██████████ 2
217.140.0.29 ██████████ 2
217.140.44.12 ██████████ 2
217.140.39.218 ██████████ 1

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Peers

There are 2 peers for this ASN.

Peers Name
AS2856 British Telecommunications PLC
AS5400 British Telecommunications PLC
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Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS2856 British Telecommunications PLC
AS5400 British Telecommunications PLC
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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
78.109.7.196 AS13205 British Telecommunications PLC 1.08ms from Amsterdam, NL
78.109.5.129 AS13205 British Telecommunications PLC 2.88ms from Amsterdam, NL
78.109.0.2 AS13205 British Telecommunications PLC 2.95ms from Amsterdam, NL
31.11.57.132 AS13205 British Telecommunications PLC 1.81ms from Amsterdam, NL
217.140.4.85 AS13205 British Telecommunications PLC 1.81ms from Amsterdam, NL
217.140.5.193 AS13205 British Telecommunications PLC 1.85ms from Amsterdam, NL
78.109.10.185 AS13205 British Telecommunications PLC 1.82ms from Amsterdam, NL
217.140.1.130 AS13205 British Telecommunications PLC 2.98ms from Amsterdam, NL
217.140.12.33 AS13205 British Telecommunications PLC 1.61ms from Amsterdam, NL
217.140.6.193 AS13205 British Telecommunications PLC 1.88ms from Amsterdam, NL
217.140.14.11 AS13205 British Telecommunications PLC 1.86ms from Amsterdam, NL
78.109.11.81 AS13205 British Telecommunications PLC 1.86ms from Amsterdam, NL
31.11.56.84 AS13205 British Telecommunications PLC 1.66ms from Amsterdam, NL
217.140.13.37 AS13205 British Telecommunications PLC 2.09ms from Amsterdam, NL
78.109.9.50 AS13205 British Telecommunications PLC 1.55ms from Amsterdam, NL

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
73.213.106.133 AS7922 Comcast Cable Communications, LLC 5.42ms from Ashburn, US
54.200.24.197 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
141.135.149.245 AS6848 Telenet BV 7.46ms from Brussels, BE
196.40.107.37 AS37153 Xneelo (Pty) Ltd 1.69ms from Cape Town, ZA
172.169.181.133 AS8075 Microsoft Corporation 0.20ms from Des Moines, US
194.0.208.53 AS29686 Jonas Frey trading as Probe Networks 0.38ms from Frankfurt am Main, DE
79.216.145.245 AS3320 Deutsche Telekom AG 4.81ms from Frankfurt am Main, DE
123.157.103.117 AS4837 CHINA UNICOM China169 Backbone 6.75ms from Hangzhou, CN
20.24.101.165 AS8075 Microsoft Corporation 0.32ms from Hong Kong, HK
60.170.152.213 AS4134 CHINANET-BACKBONE 8.50ms from Huai'an, CN
92.31.69.53 AS13285 TalkTalk Communications Limited 8.20ms from London, GB
50.113.65.197 AS20001 Charter Communications Inc 5.78ms from Los Angeles, US
34.23.80.53 AS396982 Google LLC 0.14ms from Moncks Corner, US
181.217.217.245 AS28573 Claro NXT Telecomunicacoes Ltda 4.31ms from Osasco, BR
176.163.159.117 AS5410 Bouygues Telecom SA 8.69ms from Paris, FR
221.2.224.53 AS4837 CHINA UNICOM China169 Backbone 4.82ms from Qingdao, CN
101.69.204.181 AS4837 CHINA UNICOM China169 Backbone 3.75ms from Shanghai, CN
221.71.138.85 AS17676 SoftBank Corp. 3.77ms from Tokyo, JP
110.72.81.117 AS4837 CHINA UNICOM China169 Backbone 4.88ms from Liuzhou, CN
69.74.22.5 AS54004 Cablevision Lightpath LLC 2.81ms from New York City, US
178.187.91.229 AS12389 PJSC Rostelecom 5.51ms from Novosibirsk, RU
134.159.62.165 AS4637 Telstra Global 0.64ms from San Jose, US
20.214.133.133 AS8075 Microsoft Corporation 0.31ms from Seoul, KR
123.206.137.149 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.67ms from Shanghai, CN
54.95.186.5 AS16509 Amazon.com, Inc. 0.20ms from Tokyo, JP

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 78.109.1.34
traceroute to 78.109.1.34 (78.109.1.34): 6 hops max, 52 byte packets
2 [AS58061] 38.180.36.1 0.217 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Almaty, KZ
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 AS13205 at robtex.

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