81.87.0.0/16

AS786 · Jisc Services Limited

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Summary

Country	United Kingdom
Domain	jisc.ac.uk
ASN	AS786
Registry	RIPE
ID	UK-JANET-20020617

WHOIS Details

inetnum:        81.87.0.0 - 81.87.255.255
netname:        UK-JANET-20020617
country:        GB
org:            ORG-UA23-RIPE
admin-c:        JN359-RIPE
tech-c:         JN359-RIPE
status:         ALLOCATED PA
notify:         jips-nosc@nosc.ja.net
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         JANET-HOSTMASTER
mnt-lower:      JIPS-NOSC
mnt-lower:      JANET-HOSTMASTER
mnt-routes:     JIPS-NOSC
mnt-irt:        IRT-JANET_CSIRT
created:        2002-06-25T13:20:50Z
last-modified:  2020-02-11T13:48:09Z
source:         RIPE
abuse-email:    irt@jisc.ac.uk
abuse-c:        JCA95-RIPE
abuse-org:      ORG-UA23-RIPE

organisation:   ORG-UA23-RIPE
org-name:       Jisc Services Limited
country:        GB
org-type:       LIR
address:        Janet NOC, 15 Fetter Lane, Third floor
address:        EC4A 1BW
address:        London
address:        UNITED KINGDOM
phone:          +44 1235 822 212
fax-no:         +44 1235 822 397
e-mail:         ipaddress@ja.net
admin-c:        SHAW1-RIPE
admin-c:        RHE1-RIPE
admin-c:        NA1000-RIPE
abuse-c:        JCA95-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        JANET-HOSTMASTER
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         JANET-HOSTMASTER
created:        2004-04-17T12:17:01Z
last-modified:  2025-08-04T10:13:15Z
source:         RIPE
abuse-email:    irt@jisc.ac.uk
abuse-c:        JCA95-RIPE
abuse-org:      undefined

role:           JANET NOSC
address:        JANET(UK) Network Operations Centre
address:        Third floor
address:        15 Fetter Lane
address:        London
address:        EC4A1BW
address:        United Kingdom
phone:          +44 (0)1235 822 212
e-mail:         operations@ja.net
remarks:        trouble: For operational queries please
remarks:        trouble: contact operations@ja.net or
remarks:        trouble: phone +44 (0)1235 822 212
remarks:        trouble: Mon-Fri, 07:00 - 23:59 UK local
remarks:        trouble: or +44 (0) 300 300 3312 all other
remarks:        trouble: times.
admin-c:        RHE1-RIPE
admin-c:        SHAW1-RIPE
tech-c:         RHE1-RIPE
tech-c:         SHAW1-RIPE
nic-hdl:        JN359-RIPE
notify:         jips-nosc@nosc.ja.net
mnt-by:         JIPS-NOSC
created:        1970-01-01T00:00:00Z
last-modified:  2025-08-04T10:12:34Z
source:         RIPE

route:          81.87.0.0/16
descr:          JANET
descr:          JANET(UK) Network Operations Centre
descr:          Third floor
descr:          15 Fetter Lane
descr:          London EC4A 1BW
descr:          United Kingdom
origin:         AS786
notify:         jips-nosc@nosc.ja.net
mnt-by:         JIPS-NOSC
created:        2002-06-17T16:59:23Z
last-modified:  2019-06-11T12:44:58Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.0.0.0/8

Range	ASN	Company	Num of IPs
81.128.0.0/11	AS2856	British Telecommunications PLC	2,097,152
81.96.0.0/12	AS5089	Virgin Media Limited	1,048,576
81.128.0.0/12	AS2856	BT Infrastructure Layer	1,048,576
81.204.0.0/14	AS1136	KPN B.V.	262,144
81.76.0.0/14	AS5378	Vodafone Limited	262,144
81.68.0.0/14	AS45090	Tencent Cloud Computing (Beijing) Co., Ltd	262,144
81.64.0.0/14	AS15557	Societe Francaise Du Radiotelephone - SFR SA	262,144
81.212.0.0/14	AS9121	Turk Telekomunikasyon Anonim Sirketi	262,144
81.82.0.0/15	AS6848	Telenet BV	131,072
81.178.0.0/15	AS13285	TalkTalk Communications Limited	131,072
81.56.0.0/15	AS29447	Free SAS	131,072
81.60.0.0/15	AS12430	VODAFONE ONO, S.A.	131,072
81.62.0.0/15	AS3303	Swisscom (Schweiz) AG	131,072
81.164.0.0/15	AS6848	Telenet BV	131,072
81.182.0.0/15	AS5483	Magyar Telekom Plc.	131,072
81.166.0.0/15	AS29695	Lyse Tele AS	131,072
81.184.0.0/16	AS6739	VODAFONE ONO, S.A.	65,536
81.34.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.61.0.0/16	AS6739	ONO_HFC	65,536
81.44.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.36.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.35.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.196.0.0/16	AS8708	DIGI ROMANIA S.A.	65,536
81.202.0.0/16	AS6739	VODAFONE ONO, S.A.	65,536
81.197.0.0/16	AS719	Elisa Oyj	65,536
81.38.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.32.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.37.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.84.0.0/16	AS2860	NOS COMUNICACOES, S.A.	65,536
81.33.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.39.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.187.0.0/16	AS41489	Andrews & Arnold Ltd	65,536
81.40.0.0/16	AS3352	Telefonica de Espana SAU	65,536
81.218.0.0/16	AS8551	Bezeq International Ltd.	65,536
81.195.0.0/16	AS8359	MTS PJSC	65,536
81.190.0.0/16	AS21021	Multimedia Polska Sp. z o.o.	65,536
81.192.0.0/16	AS6713	Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	65,536
81.193.0.0/16	AS3243	MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	65,536
81.81.0.0/16	AS1267	WIND TRE S.P.A.	65,536
81.57.0.0/16	AS29447	Iliad / Free SAS	65,536
81.219.0.0/16	AS12741	Netia SA	65,536
81.187.0.0/16	AS20712	Andrews & Arnold Ltd	65,536
81.198.0.0/16	AS24921	SIA Tet	65,536
81.220.0.0/16	AS15557	Societe Francaise Du Radiotelephone - SFR SA	65,536
81.221.0.0/16	AS1836	green.ch AG	65,536
81.185.0.0/16	AS15557	Societe Francaise Du Radiotelephone - SFR SA	65,536
81.194.0.0/16	AS2200	Renater	65,536
81.191.0.0/16	AS2116	GLOBALCONNECT AS	65,536
81.198.0.0/16	AS12578	SIA Tet	65,536

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
81.87.34.50	ruhere.co.uk	1
81.87.18.124	ayresome.net	1

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
81.87.22.105	AS786 Jisc Services Limited	`4.89ms` from London, GB
81.87.18.105	AS786 Jisc Services Limited	`4.62ms` from London, GB
81.87.23.65	AS786 Jisc Services Limited	`4.36ms` from London, GB
81.87.19.49	AS786 Jisc Services Limited	`5.09ms` from London, GB
81.87.20.41	AS786 Jisc Services Limited	`4.15ms` from London, GB
81.87.21.65	AS786 Jisc Services Limited	`5.07ms` 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
3.219.164.128	AS14618 Amazon.com, Inc.	`0.56ms` from Ashburn, US
136.113.75.0	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
64.105.90.0	AS55470 Cyfuture India Pvt. Ltd.	`1.17ms` from Delhi, IN
62.192.100.240	AS3320 Deutsche Telekom AG	`0.50ms` from Frankfurt am Main, DE
102.89.68.0	AS29465 MTN NIGERIA Communication limited	`2.54ms` from Lagos, NG
81.158.222.128	AS2856 British Telecommunications PLC	`6.39ms` from London, GB
75.81.181.192	AS20001 Charter Communications Inc	`8.29ms` from Los Angeles, US
81.36.87.80	AS3352 TELEFONICA DE ESPANA S.A.U.	`7.11ms` from Madrid, ES
173.64.13.144	AS701 Verizon Business	`9.19ms` from New York City, US
126.61.114.48	AS17676 SoftBank Corp.	`9.24ms` from Osaka, JP
172.5.106.176	AS7018 AT&T Enterprises, LLC	`13.79ms` from San Antonio, US
84.20.114.96	AS2116 GLOBALCONNECT AS	`2.00ms` from Sandefjord, NO
129.151.36.128	AS31898 Oracle Corporation	`0.28ms` from Sao Paulo, BR
1.219.220.224	AS3786 LG DACOM Corporation	`5.21ms` from Seoul, KR
126.74.28.96	AS17676 SoftBank Corp.	`7.09ms` from Tokyo, JP
101.98.214.16	AS9790 Two Degrees Networks Limited	`1.68ms` from Auckland, NZ
197.60.48.144	AS8452 TE-AS	`6.67ms` from Cairo, EG
81.13.155.0	AS15547 netplus.ch SA	`3.32ms` from Geneve, CH
80.1.169.64	AS5089 Virgin Media Limited	`11.07ms` from London, GB
83.54.71.96	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.79ms` from Madrid, ES
162.230.54.48	AS7018 AT&T Enterprises, LLC	`9.30ms` from Miami, US
121.86.183.64	AS17511 OPTAGE Inc.	`1.96ms` from Osaka, JP
34.7.86.32	AS396982 Google LLC	`0.11ms` from Oudeschip, NL
72.60.212.160	AS47583 Hostinger International Limited	`0.52ms` from Paris, FR
139.82.113.240	AS2715 Fundação Carlos Chagas Filho de Amparo a Pesquisa	`0.77ms` from Rio de Janeiro, BR

Traceroute

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

traceroute -a -n -q1 -m6 81.87.244.246

traceroute to 81.87.244.246 (81.87.244.246): 6 hops max, 52 byte packets

1 [AS15169] 142.251.50.125 6.318 ms

2 *

3 [AS786] 146.97.35.206 14.227 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Brussels, BE

On December 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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