31.121.0.0/16

AS2856  ·  British Telecommunications PLC

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Summary

Country United Kingdom
Domain bt.com
ASN AS2856
Registry RIPE
ID BTNET-1

WHOIS Details

inetnum:        31.121.0.0 - 31.121.255.255
netname:        BTnet-1
descr:          BTnet Assignments
country:        GB
admin-c:        BS1474-RIPE
tech-c:         BS1474-RIPE
status:         LIR-PARTITIONED PA
mnt-lower:      BTNET-MNT
mnt-routes:     BTNET-MNT
mnt-by:         AS12576-MNT
created:        2019-05-28T10:18:07Z
last-modified:  2019-05-28T10:19:53Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        EA8069-RIPE
abuse-org:      ORG-TIUL1-RIPE

role:           BTnet Support
address:        Adhara
address:        Adastral Park
address:        Martlesham Heath
address:        Ipswich
address:        SUFFLK IP5 3RE
address:        GB
phone:          +44 800 0858963 5
phone:          +44 1473 336231
e-mail:         [email protected]
e-mail:         [email protected]
admin-c:        FLS15-RIPE
tech-c:         FLS15-RIPE
nic-hdl:        BS1474-RIPE
remarks:        For all queries contact [email protected]
remarks:        Please send delisting issues to [email protected]
mnt-by:         BTNET-MNT
created:        2002-04-30T07:54:10Z
last-modified:  2025-07-18T13:07:21Z
source:         RIPE

route:          31.121.0.0/16
origin:         AS2856
mnt-by:         BTNET-INFRA-MNT
mnt-by:         AS12576-MNT
created:        2018-10-02T09:02:10Z
last-modified:  2019-05-22T12:43:09Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 31.0.0.0/8

Range ASN Company Num of IPs
31.224.0.0/11 AS3320 Telekom Deutschland GmbH 2,097,152
31.64.0.0/12 AS2856 EE Limited 1,048,576
31.32.0.0/13 AS5410 Bouygues Telecom SA 524,288
31.48.0.0/13 AS2856 British Telecommunications PLC 524,288
31.136.0.0/14 AS33915 Vodafone Libertel B.V. 262,144
31.60.0.0/14 AS5617 Orange Polska Spolka Akcyjna 262,144
31.156.0.0/14 AS30722 Vodafone Italia S.p.A. 262,144
31.16.0.0/14 AS3209 Vodafone Deutschland GmbH 262,144
31.174.0.0/15 AS39603 PLAY MBB 131,072
31.162.0.0/15 AS12389 PJSC Rostelecom 131,072
31.218.0.0/15 AS5384 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC 131,072
31.180.0.0/15 AS12389 PJSC Rostelecom 131,072
31.92.0.0/15 AS2856 EE Limited 131,072
31.166.0.0/15 AS34400 Etihad Etisalat, a joint stock company 131,072
31.212.0.0/15 AS3320 Telekom Deutschland GmbH 131,072
31.164.0.0/15 AS6730 Sunrise GmbH 131,072
31.90.0.0/15 AS2856 EE Limited 131,072
31.160.0.0/15 AS1136 KPN B.V. 131,072
31.126.0.0/15 AS2856 BT Retail 131,072
31.120.0.0/16 AS2856 EE Limited 65,536
31.0.0.0/16 AS8374 Polkomtel Sp. z o.o. 65,536
31.149.0.0/16 AS1136 KPN B.V. 65,536
31.96.0.0/16 AS2856 EE Limited 65,536
31.168.0.0/16 AS8551 Bezeq International Ltd. 65,536
31.205.0.0/16 AS41230 ASK4 Limited 65,536
31.153.0.0/16 AS6866 Cyprus Telecommunications Authority 65,536
31.201.0.0/16 AS50266 Pool for fixed WBA, ODF and VULA users 65,536
31.152.0.0/16 AS29247 Ote SA (Hellenic Telecommunications Organisation) 65,536
31.20.0.0/16 AS50266 Pool for fixed WBA users 65,536
31.21.0.0/16 AS50266 Pool for fixed WBA users 65,536
31.145.0.0/16 AS15924 Vodafone Net Iletisim Hizmetler AS 65,536
31.147.0.0/16 AS2108 Croatian Academic and Research Network 65,536
31.151.0.0/16 AS33915 Ziggo Services B.V. 65,536
31.119.0.0/16 AS2856 BTnet Assignments 65,536
31.164.0.0/16 AS6730 sunrise Communications AG 65,536
31.125.0.0/16 AS6871 Plusnet Broadband 65,536
31.144.0.0/16 AS21497 PrJSC VF UKRAINE 65,536
31.206.0.0/16 AS15924 Vodafone Net Iletisim Hizmetler AS 65,536
31.154.0.0/16 AS12400 Partner Communications Ltd. 65,536
31.165.0.0/16 AS6730 sunrise Communications AG 65,536
31.104.0.0/16 AS2856 BT-CENTRAL-PLUS 65,536
31.26.0.0/16 AS30722 IP subnet assigned to VF customers 65,536
31.4.0.0/16 AS12430 VODAFONE ESPANA S.A.U. 65,536
31.188.0.0/16 AS24608 WIND TRE S.P.A. 65,536
31.148.0.0/16 AS44546 65,536
31.191.0.0/16 AS1267 Network tech merge from As24608 into As1267 65,536
31.218.0.0/16 AS5384 Emirates Telecommunications Corporation 65,536
31.23.0.0/16 AS12389 PJSC Rostelecom 65,536
31.202.0.0/16 AS34700 MAXNET TELECOM, LTD 65,536

Hosted domains

There are 149 domain names hosted across 74 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
31.121.125.85 wildern.org 24
31.121.9.150 energiagroup.com 14
31.121.9.211 crossmorewindfarm.ie 11
31.121.112.23 thehivizman.com 5
31.121.149.24 glokal.biz 5
31.121.52.182 select-a-cruise.com 4
31.121.141.165 theimmediateedge.co.uk 4
31.121.111.115 reddotradio.org.uk 3
31.121.27.253 hughestrade.com 3
31.121.66.162 festivalofingenuity.co.uk 3
31.121.160.102 airemap-api.com 3
31.121.171.189 encx.com 3
31.121.244.219 eurospares.com 3
31.121.155.214 digi-bee.co.uk 2
31.121.151.163 desigocc.co.uk 2
31.121.112.25 printing.me.uk 2
31.121.181.34 kembles.com 2
31.121.52.179 select-traveller.com 2
31.121.128.70 sureslip.co.uk 2
31.121.54.155 crazyboaters.co.uk 2

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

Pingable IPs

7,670 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
31.121.0.169 AS2856 British Telecommunications PLC 1.70ms from London, GB
31.121.33.190 AS2856 British Telecommunications PLC 1.15ms from London, GB
31.121.24.195 AS2856 British Telecommunications PLC 2.48ms from London, GB
31.121.244.40 AS2856 British Telecommunications PLC 0.84ms from London, GB
31.121.118.82 AS2856 British Telecommunications PLC 3.57ms from London, GB
31.121.177.250 AS2856 British Telecommunications PLC 1.11ms from London, GB
31.121.79.73 AS2856 British Telecommunications PLC 0.93ms from London, GB
31.121.27.67 AS2856 British Telecommunications PLC 1.95ms from London, GB
31.121.86.161 AS2856 British Telecommunications PLC 0.93ms from London, GB
31.121.240.174 AS2856 British Telecommunications PLC 0.80ms from London, GB
31.121.91.51 AS2856 British Telecommunications PLC 1.68ms from London, GB
31.121.128.41 AS2856 British Telecommunications PLC 0.91ms from London, GB
31.121.204.82 AS2856 British Telecommunications PLC 2.55ms from London, GB
31.121.100.194 AS2856 British Telecommunications PLC 3.87ms from London, GB
31.121.127.180 AS2856 British Telecommunications PLC 1.02ms from London, GB
31.121.229.112 AS2856 British Telecommunications PLC 0.95ms from London, GB
31.121.57.186 AS2856 British Telecommunications PLC 1.19ms from London, GB
31.121.152.181 AS2856 British Telecommunications PLC 4.63ms from London, GB
31.121.160.49 AS2856 British Telecommunications PLC 1.15ms from London, GB
31.121.61.89 AS2856 British Telecommunications PLC 1.26ms from London, GB
31.121.11.245 AS2856 British Telecommunications PLC 1.75ms from Erith, GB
31.121.207.75 AS2856 British Telecommunications PLC 3.29ms from London, GB
31.121.34.6 AS2856 British Telecommunications PLC 0.90ms from London, GB
31.121.159.243 AS2856 British Telecommunications PLC 1.03ms from London, GB
31.121.20.146 AS2856 British Telecommunications PLC 2.09ms 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
220.245.155.48 AS7545 TPG Telecom Limited 11.74ms from Adelaide, AU
91.180.157.240 AS5432 Proximus NV 1.69ms from Brussels, BE
176.199.202.176 AS3209 Vodafone GmbH 12.02ms from Frankfurt am Main, DE
43.199.123.128 AS16509 Amazon.com, Inc. 0.12ms from Hong Kong, HK
213.171.194.240 AS8560 IONOS SE 0.81ms from London, GB
213.97.115.128 AS3352 TELEFONICA DE ESPANA S.A.U. 1.45ms from Madrid, ES
35.140.140.128 AS33363 Charter Communications, Inc 10.47ms from Orlando, US
126.77.109.176 AS17676 SoftBank Corp. 2.84ms from Tokyo, JP
14.3.140.96 AS4685 Asahi Net 4.12ms from Tokyo, JP
95.161.65.112 AS62041 Telegram Messenger Inc 0.21ms from Amsterdam, NL
98.204.222.224 AS7922 Comcast Cable Communications, LLC 5.27ms from Ashburn, US
52.40.144.32 AS16509 Amazon.com, Inc. 0.11ms from Boardman, US
168.235.196.144 AS54994 Meteverse Limited. 0.10ms from Istanbul, TR
178.198.11.176 AS3303 Swisscom (Switzerland) Ltd 0.71ms from Lausanne, CH
135.129.254.240 AS14593 Space Exploration Technologies Corporation 0.80ms from Los Angeles, US
208.127.232.176 AS394089 Google LLC 0.13ms from Los Angeles, US
99.162.87.80 AS7018 AT&T Enterprises, LLC 4.10ms from Los Angeles, US
54.161.205.128 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
162.240.23.48 AS46606 Unified Layer 2.00ms from Salt Lake City, US
131.243.168.16 AS16 Lawrence Berkeley National Laboratory 3.14ms from Santa Clara, US
191.162.228.112 AS26615 TIM S/A 5.74ms from Sao Paulo, BR
119.149.0.0 AS38091 LG HelloVision Corp. 0.94ms from Seoul, KR
176.230.196.96 AS12400 Partner Communications Ltd. 2.35ms from Tel Aviv, IL
126.78.244.80 AS17676 SoftBank Corp. 2.47ms from Tokyo, JP
98.27.222.96 AS10796 Charter Communications Inc 9.30ms from Columbus, US

Traceroute

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

$
traceroute -a -n -q1 31.121.31.43
traceroute to 31.121.31.43 (31.121.31.43): 64 hops max, 52 byte packets
2 *
5 [AS2856] 62.6.201.115 8.092 ms
6 [AS2856] 62.7.101.33 10.642 ms
7 [AS2856] 31.121.31.43 10.037 ms
Measurement taken from IPinfo ProbeNet in Coventry, GB
On

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