31.11.56.0/23

AS13205 · British Telecommunications PLC

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Summary

Country	Netherlands
Domain	bt.com
ASN	AS13205
Registry	RIPE
ID	BT-ICH-AMS-NIE

WHOIS Details

inetnum:        31.11.56.0 - 31.11.57.255
netname:        BT-ICH-AMS-NIE
descr:          BT DCS Niewegein Data Centre
country:        NL
admin-c:        ICHR1-RIPE
tech-c:         ICHR1-RIPE
status:         ASSIGNED PA
remarks:        Please send abuse notification to abuse.ignitech@bt.com
remarks:        INFRA-AW
mnt-by:         ICH-MNT
mnt-lower:      ICH-MNT
mnt-routes:     ICH-MNT
created:        2012-06-25T15:37:35Z
last-modified:  2012-06-25T15:37:35Z
source:         RIPE
abuse-email:    protect@bt.com
abuse-c:        BTCR3-RIPE
abuse-org:      ORG-BT4-RIPE

role:           Ignite Content Hosting Registry
address:        BT Global Services DCS Registry
address:        British Telecommunications PLC
address:        81 Newgate Street
address:        London GB
e-mail:         ip.manager-ich@bt.com
remarks:        trouble: mailto: btcertcc@bt.com
admin-c:        NM1915-RIPE
admin-c:        MS35380-RIPE
tech-c:         MS35380-RIPE
tech-c:         NM1915-RIPE
tech-c:         FLS15-RIPE
nic-hdl:        ICHR1-RIPE
mnt-by:         ICH-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2025-03-21T10:05:56Z
source:         RIPE

route:          31.11.56.0/23
descr:          BT Global Services DCS Utrecht Hosting Centres
origin:         AS13205
mnt-by:         ICH-MNT
created:        2012-06-25T15:48:01Z
last-modified:  2012-06-25T15:48:01Z
source:         RIPE

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
31.11.57.168	l0v.eu	1
31.11.57.228	s3go.net	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
31.11.56.39	AS13205 British Telecommunications PLC	`1.65ms` from Amsterdam, NL
31.11.57.132	AS13205 British Telecommunications PLC	`1.81ms` 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
34.223.74.135	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
192.144.24.151	AS48095 XT GLOBAL NETWORKS LTD.	`8.73ms` from Bucharest, RO
190.174.18.39	AS22927 Telefonica de Argentina	`2.13ms` from Buenos Aires, AR
34.61.140.71	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
213.135.17.231	AS12941 intersaar GmbH	`6.29ms` from Frankfurt am Main, DE
109.230.230.247	AS197071 active-servers.com	`0.53ms` from Frankfurt am Main, DE
188.114.82.247	AS198881 GETRESPONSE Sp.z o.o.	`1.58ms` from Gdynia, PL
176.122.131.7	AS25820 IT7 Networks Inc	`0.33ms` from Los Angeles, US
85.184.105.87	AS47171 Kindred IP Limited	`1.09ms` from Milan, IT
175.141.99.231	AS4788 TM TECHNOLOGY SERVICES SDN. BHD.	`3.49ms` from Sepang, MY
39.109.172.71	AS55430 Starhub Ltd	`1.43ms` from Singapore, SG
61.216.167.247	AS3462 Data Communication Business Group	`0.97ms` from Taichung, TW
91.112.126.7	AS8447 A1 Telekom Austria AG	`10.53ms` from Vienna, AT
60.170.214.87	AS4134 CHINANET-BACKBONE	`9.09ms` from Wuhan, CN
4.231.83.23	AS8075 Microsoft Corporation	`0.21ms` from Amsterdam, NL
12.67.83.199	AS7018 AT&T Enterprises, LLC	`2.41ms` from Atlanta, US
208.124.84.55	AS6300 Consolidated Communications, Inc.	`7.98ms` from Dallas, US
83.243.57.183	AS25504 Vautron Rechenzentrum AG	`5.20ms` from Frankfurt am Main, DE
91.181.1.23	AS5432 Proximus NV	`4.76ms` from Gravelines, FR
82.181.137.151	AS16086 DNA Oyj	`4.97ms` from Helsinki, FI
81.129.1.55	AS2856 British Telecommunications PLC	`15.18ms` from London, GB
185.198.108.215	AS200845 AVATEL TELECOM, SA	`8.97ms` from Madrid, ES
47.201.144.199	AS5650 Frontier Communications of America, Inc.	`6.07ms` from Miami, US
75.251.149.71	AS6167 Verizon Business	`11.28ms` from New York City, US
176.210.24.231	AS12389 PJSC Rostelecom	`9.12ms` from Novosibirsk, RU

Traceroute

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

traceroute -a -n -q1 31.11.56.131

traceroute to 31.11.56.131 (31.11.56.131): 64 hops max, 52 byte packets

1 [AS15169] 142.251.51.160 4.634 ms

2 *

3 [AS5400] 166.49.239.210 5.37 ms

4 [AS13205] 31.11.56.131 10.443 ms

Measurement taken from

IPinfo ProbeNet in Oudeschip, NL

On August 28th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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