31.104.0.0/16

AS2856 · British Telecommunications PLC

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Summary

Country	United Kingdom
Domain	bt.com
ASN	AS2856
Registry	RIPE
ID	BT-CENTRAL-PLUS

WHOIS Details

inetnum:        31.104.0.0 - 31.104.255.255
netname:        BT-CENTRAL-PLUS
descr:          BT-CENTRAL-PLUS
org:            ORG-BPIS1-RIPE
country:        GB
admin-c:        FLS15-RIPE
tech-c:         BS1474-RIPE
status:         ASSIGNED PA
mnt-by:         BTNET-INFRA-MNT
mnt-by:         BTNET-MNT
created:        2022-01-27T18:40:29Z
last-modified:  2022-01-27T18:40:29Z
source:         RIPE
abuse-email:    abuse@bt.com
abuse-c:        AR13878-RIPE
abuse-org:      ORG-BPIS1-RIPE

organisation:   ORG-BPIS1-RIPE
org-name:       British Telecommunications PLC
country:        GB
org-type:       LIR
address:        PP1, Floor1, Orion, Adastral Park, Martlesham Heath
address:        IP5 3RE
address:        Ipswich
address:        UNITED KINGDOM
phone:          +44 (0)20 7356 5000
abuse-c:        AR13878-RIPE
mnt-ref:        BTNET-MNT
mnt-ref:        BTNET-INFRA-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         BTNET-INFRA-MNT
admin-c:        FLS15-RIPE
admin-c:        MS35380-RIPE
admin-c:        GF1231-RIPE
created:        2004-04-17T12:11:50Z
last-modified:  2025-03-24T17:20:04Z
source:         RIPE
e-mail:         ipaddman@bt.com
abuse-email:    abuse@bt.com
abuse-c:        AR13878-RIPE
abuse-org:      undefined

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:         as2856peering@bt.com
e-mail:         btnetdns@bt.com
admin-c:        FLS15-RIPE
tech-c:         FLS15-RIPE
nic-hdl:        BS1474-RIPE
remarks:        For all queries contact as2856peering@bt.com
remarks:        Please send delisting issues to btnetdns@bt.com
mnt-by:         BTNET-MNT
created:        2002-04-30T07:54:10Z
last-modified:  2025-07-18T13:07:21Z
source:         RIPE

role:           BT IP Address Admin
address:        PP 1, Floor 1
address:        Orion Building
address:        Adastral Park
address:        Martlesham Heath
address:        Ipswich
address:        IP5 3RE
address:        UK
e-mail:         ipaddman@bt.com
e-mail:         abuse@bt.com
remarks:        
remarks:        
nic-hdl:        FLS15-RIPE
mnt-by:         BTNET-INFRA-MNT
created:        2002-08-29T06:26:48Z
last-modified:  2023-06-21T11:23:36Z
source:         RIPE

route:          31.104.0.0/16
origin:         AS2856
mnt-by:         AS12576-MNT
mnt-by:         BTNET-INFRA-MNT
created:        2022-01-11T10:22:08Z
last-modified:  2022-01-11T10:22:08Z
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
31.32.0.0/13	AS5410	Bouygues Telecom SA	524,288
31.48.0.0/13	AS2856	British Telecommunications PLC	524,288
31.16.0.0/14	AS3209	Vodafone Deutschland GmbH	262,144
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
31.166.0.0/15	AS34400	Etihad Etisalat, a joint stock company	131,072
31.180.0.0/15	AS12389	PJSC Rostelecom	131,072
31.212.0.0/15	AS3320	Telekom Deutschland GmbH	131,072
31.162.0.0/15	AS12389	PJSC Rostelecom	131,072
31.160.0.0/15	AS1136	KPN B.V.	131,072
31.218.0.0/15	AS5384	EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC	131,072
31.92.0.0/15	AS2856	EE Limited	131,072
31.90.0.0/15	AS2856	EE Limited	131,072
31.174.0.0/15	AS39603	P4 Sp. z o.o.	131,072
31.126.0.0/15	AS2856	BT Retail	131,072
31.164.0.0/15	AS6730	Sunrise GmbH	131,072
31.168.0.0/16	AS8551	Bezeq International Ltd.	65,536
31.164.0.0/16	AS6730	sunrise Communications AG	65,536
31.119.0.0/16	AS2856	BTnet Assignments	65,536
31.206.0.0/16	AS15924	Vodafone Net Iletisim Hizmetler AS	65,536
31.165.0.0/16	AS6730	sunrise Communications AG	65,536
31.121.0.0/16	AS2856	BTnet Assignments	65,536
31.147.0.0/16	AS2108	Croatian Academic and Research Network	65,536
31.205.0.0/16	AS41230	ASK4 Limited	65,536
31.144.0.0/16	AS21497	PrJSC VF UKRAINE	65,536
31.150.0.0/16	AS9145	EWE TEL GmbH	65,536
31.173.0.0/16	AS31133	PJSC MegaFon	65,536
31.96.0.0/16	AS2856	EE Limited	65,536
31.145.0.0/16	AS15924	Vodafone Net Iletisim Hizmetler AS	65,536
31.120.0.0/16	AS2856	EE Limited	65,536
31.23.0.0/16	AS12389	PJSC Rostelecom	65,536
31.201.0.0/16	AS50266	Pool for fixed WBA, ODF and VULA users	65,536
31.218.0.0/16	AS5384	Emirates Telecommunications Corporation	65,536
31.4.0.0/16	AS12430	VODAFONE ESPANA S.A.U.	65,536
31.215.0.0/16	AS5384	EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC	65,536
31.8.0.0/16	AS28812	PJSC Bashinformsvyaz	65,536
31.151.0.0/16	AS33915	Ziggo Services B.V.	65,536
31.202.0.0/16	AS34700	MAXNET TELECOM, LTD	65,536
31.206.0.0/16	AS8386	Vodafone Net Iletisim Hizmetler AS	65,536
31.0.0.0/16	AS8374	Polkomtel Sp. z o.o.	65,536
31.5.0.0/16	AS12302	Vodafone Romania S.A.	65,536
31.125.0.0/16	AS6871	Plusnet Broadband	65,536
31.145.0.0/16	AS8386	Vodafone Net Iletisim Hizmetler AS	65,536
31.148.0.0/16	AS44546		65,536
31.154.0.0/16	AS12400	Partner Communications Ltd.	65,536
31.46.0.0/16	AS5483	Magyar Telekom Plc.	65,536
31.189.0.0/16	AS24608	WIND TRE S.P.A.	65,536

Hosted domains

There are 54 domain names hosted across 44 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
31.104.107.175	esperanza-consultancy.co.uk	4
31.104.204.190	hazeldev.uk	4
31.104.115.231	paddock-view.co.uk	2
31.104.77.93	j-s-f.co.uk	2
31.104.2.32	maseratished.com	2
31.104.144.110	lingorite.com	2
31.104.134.247	keithclements.co.uk	2
31.104.250.33	madebyman.net	1
31.104.170.149	flatpenguin.com	1
31.104.140.32	wh33lwrights.co.uk	1
31.104.174.140	blockbill.co.uk	1
31.104.162.110	securetrich.co.uk	1
31.104.178.111	pipsmediaserver.com	1
31.104.245.42	studiomrs.net	1
31.104.119.246	dadeos.co.uk	1
31.104.105.106	audiosync.app	1
31.104.125.42	theamw.co.uk	1
31.104.181.12	ericdev.uk	1
31.104.38.249	homedb.wales	1
31.104.125.52	distributedai.dev	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

57,794 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
31.104.112.193	AS2856 British Telecommunications PLC	`1.98ms` from London, GB
31.104.230.92	AS2856 British Telecommunications PLC	`4.07ms` from London, GB
31.104.244.62	AS2856 British Telecommunications PLC	`6.51ms` from London, GB
31.104.123.195	AS2856 British Telecommunications PLC	`2.69ms` from London, GB
31.104.56.209	AS2856 British Telecommunications PLC	`4.65ms` from London, GB
31.104.0.137	AS2856 British Telecommunications PLC	`4.44ms` from London, GB
31.104.167.39	AS2856 British Telecommunications PLC	`2.46ms` from London, GB
31.104.251.197	AS2856 British Telecommunications PLC	`6.29ms` from London, GB
31.104.101.173	AS2856 British Telecommunications PLC	`2.52ms` from London, GB
31.104.229.136	AS2856 British Telecommunications PLC	`6.58ms` from London, GB
31.104.226.206	AS2856 British Telecommunications PLC	`6.52ms` from London, GB
31.104.206.80	AS2856 British Telecommunications PLC	`5.70ms` from London, GB
31.104.245.113	AS2856 British Telecommunications PLC	`6.48ms` from London, GB
31.104.228.185	AS2856 British Telecommunications PLC	`7.38ms` from London, GB
31.104.176.43	AS2856 British Telecommunications PLC	`4.08ms` from London, GB
31.104.225.108	AS2856 British Telecommunications PLC	`6.66ms` from London, GB
31.104.171.95	AS2856 British Telecommunications PLC	`2.44ms` from London, GB
31.104.252.50	AS2856 British Telecommunications PLC	`10.40ms` from London, GB
31.104.166.60	AS2856 British Telecommunications PLC	`2.49ms` from London, GB
31.104.72.152	AS2856 British Telecommunications PLC	`5.66ms` from London, GB
31.104.34.113	AS2856 British Telecommunications PLC	`3.60ms` from London, GB
31.104.169.193	AS2856 British Telecommunications PLC	`2.75ms` from London, GB
31.104.177.21	AS2856 British Telecommunications PLC	`2.53ms` from London, GB
31.104.117.173	AS2856 British Telecommunications PLC	`1.90ms` from London, GB
31.104.137.85	AS2856 British Telecommunications PLC	`1.74ms` 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
173.92.124.32	AS11426 Charter Communications Inc	`9.88ms` from Atlanta, US
134.76.241.80	AS207592 Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH, Goettingen	`4.31ms` from Frankfurt am Main, DE
20.240.220.176	AS8075 Microsoft Corporation	`0.45ms` from Gaevle, SE
157.66.160.208	AS150859 SANDCLOCK SERVICE TRADING COMPANY LIMITED	`0.86ms` from Ho Chi Minh City, VN
16.162.223.80	AS16509 Amazon.com, Inc.	`0.13ms` from Hong Kong, HK
79.168.153.176	AS2860 NOS COMUNICACOES, S.A.	`6.83ms` from Lisbon, PT
62.190.39.240	AS702 Verizon Business	`1.53ms` from London, GB
185.182.183.96	AS208103 ZONA ENERGIA S.L.	`12.46ms` from Madrid, ES
95.163.240.128	AS197695 Domain names registrar REG.RU, Ltd	`1.03ms` from Moscow, RU
52.20.52.192	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
182.209.35.160	AS17858 LG POWERCOMM	`1.67ms` from Seoul, KR
220.152.236.48	AS17816 China Unicom IP network China169 Guangdong province	`3.27ms` from Shenzhen, CN
217.198.146.80	AS34234 Atea Sverige AB	`8.87ms` from Stockholm, SE
49.114.253.0	AS4134 CHINANET-BACKBONE	`3.79ms` from UEruemqi, CN
85.3.37.16	AS3303 Swisscom (Switzerland) Ltd	`1.78ms` from Zuerich, CH
62.235.4.80	AS5432 Proximus NV	`5.14ms` from Amsterdam, NL
73.154.234.240	AS7922 Comcast Cable Communications, LLC	`10.52ms` from Ashburn, US
4.227.210.160	AS8075 Microsoft Corporation	`0.37ms` from Ashburn, US
186.110.227.208	AS7303 Telecom Argentina S.A.	`11.69ms` from Buenos Aires, AR
104.50.86.176	AS7018 AT&T Enterprises, LLC	`3.67ms` from Dallas, US
83.135.168.160	AS8881 1&1 Versatel GmbH	`5.52ms` from Duesseldorf, DE
75.155.78.208	AS852 TELUS Communications Inc.	`1.00ms` from Edmonton, CA
177.53.73.128	AS262460 Ubannet Internet e Informatica Ltda ME	`12.82ms` from Fortaleza, BR
45.174.162.0	AS268858 NANDO NET FIBRA	`16.27ms` from Fortaleza, BR
151.177.78.0	AS1257 Tele2 Sverige AB	`1.05ms` from Goeteborg, SE

Traceroute

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

traceroute -a -n -q1 -f2 31.104.216.118

traceroute to 31.104.216.118 (31.104.216.118): 64 hops max, 52 byte packets

2 [AS9002] 87.245.236.20 0.797 ms

3 [AS9002] 87.245.234.54 27.071 ms

4 *

5 [AS2856] 62.6.200.28 27.8 ms

6 *

7 *

8 [AS2856] 31.104.216.118 39.693 ms

Measurement taken from

IPinfo ProbeNet in Gdynia, PL

On October 30th 2025

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