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
217.140.33.38 ██████████ 4
217.140.42.182 ██████████ 4
217.140.44.12 ██████████ 2
217.140.0.29 ██████████ 2
217.140.39.31 ██████████ 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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Pingable IPs

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

IP Address ASN Details
78.109.0.1 AS13205 British Telecommunications PLC 2.90ms from Amsterdam, NL
78.109.10.185 AS13205 British Telecommunications PLC 1.85ms from Amsterdam, NL
31.11.57.132 AS13205 British Telecommunications PLC 1.78ms from Amsterdam, NL
78.109.7.196 AS13205 British Telecommunications PLC 1.04ms from Amsterdam, NL
217.140.14.11 AS13205 British Telecommunications PLC 1.84ms from Amsterdam, NL
217.140.1.131 AS13205 British Telecommunications PLC 3.01ms from Amsterdam, NL
78.109.9.50 AS13205 British Telecommunications PLC 1.53ms from Amsterdam, NL
31.11.56.84 AS13205 British Telecommunications PLC 1.68ms from Amsterdam, NL
78.109.11.81 AS13205 British Telecommunications PLC 1.90ms from Amsterdam, NL
78.109.5.129 AS13205 British Telecommunications PLC 2.89ms from Amsterdam, NL
217.140.4.81 AS13205 British Telecommunications PLC 1.87ms from Amsterdam, NL
217.140.12.33 AS13205 British Telecommunications PLC 1.62ms from Amsterdam, NL
217.140.5.193 AS13205 British Telecommunications PLC 1.84ms from Amsterdam, NL
217.140.13.37 AS13205 British Telecommunications PLC 2.08ms from Amsterdam, NL
217.140.6.193 AS13205 British Telecommunications PLC 1.91ms 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
51.163.167.69 AS47973 Digital Realty Netherlands B.V. 0.29ms from Amsterdam, NL
125.238.209.133 AS4771 Spark New Zealand Trading Ltd. 13.73ms from Auckland, NZ
120.48.240.117 AS38365 Beijing Baidu Netcom Science and Technology Co., Ltd. 4.90ms from Beijing, CN
222.128.205.165 AS4808 China Unicom Beijing Province Network 2.96ms from Beijing, CN
139.59.13.229 AS14061 DigitalOcean, LLC 0.30ms from Bengaluru, IN
40.70.27.133 AS8075 Microsoft Corporation 0.20ms from Boydton, US
152.232.164.37 AS55286 B2 Net Solutions Inc. 0.18ms from Buffalo, US
175.153.130.117 AS4837 CHINA UNICOM China169 Backbone 10.16ms from Chengdu, CN
172.111.29.133 AS394998 LakeLand Internet LLC 4.13ms from Chicago, US
3.135.55.117 AS16509 Amazon.com, Inc. 0.20ms from Columbus, US
35.202.165.133 AS396982 Google LLC 0.13ms from Council Bluffs, US
87.191.148.149 AS3320 Deutsche Telekom AG 9.90ms from Frankfurt am Main, DE
75.148.166.181 AS7922 Comcast Cable Communications, LLC 8.59ms from Houston, US
220.74.140.181 AS4766 Korea Telecom 2.13ms from Incheon, KR
219.249.173.149 AS9318 SK Broadband Co Ltd 7.08ms from Incheon, KR
88.226.66.165 AS9121 Turk Telekomunikasyon Anonim Sirketi 14.84ms from Istanbul, TR
78.85.233.149 AS12389 PJSC Rostelecom 19.09ms from Kazan, RU
24.205.20.21 AS20115 Charter Communications LLC 2.79ms from Los Angeles, US
67.116.185.197 AS7018 AT&T Enterprises, LLC 2.31ms from Los Angeles, US
75.206.162.117 AS6167 Verizon Business 17.90ms from Miami, US
189.210.143.213 AS6503 Axtel, S.A.B. de C.V. 1.18ms from Monterrey, MX
24.59.169.133 AS11351 Charter Communications Inc 16.57ms from New York City, US
85.112.155.133 AS2116 GLOBALCONNECT AS 0.45ms from Oslo, NO
175.171.209.245 AS4837 CHINA UNICOM China169 Backbone 10.68ms from Tieling, CN
153.208.69.5 AS4713 NTT DOCOMO BUSINESS,Inc. 7.25ms 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 -f4 -m10 78.109.13.54
traceroute to 78.109.13.54 (78.109.13.54): 10 hops max, 52 byte packets
4 [AS5400] 166.49.214.136 24.338 ms
6 [AS5400] 166.49.164.136 25.919 ms
7 [AS5400] 166.49.239.210 26.731 ms
8 *
9 *
10 *
Measurement taken from IPinfo ProbeNet in Warsaw, PL
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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