51.9.0.0/16

AS6871 · Plusnet

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	United Kingdom
Domain	plus.net
ASN	AS6871
Registry	ripe
Hosted IPs	65,536
ID	FORCE9

WHOIS Details

inetnum:        51.9.0.0 - 51.9.255.255
remarks:        Please send abuse notification to abuse@plus.net
netname:        FORCE9
descr:          PlusNet plc.
org:            ORG-BPIS1-RIPE
country:        GB
admin-c:        PNET2-RIPE
tech-c:         PNET2-RIPE
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
mnt-by:         MAINT-AS6871
mnt-by:         BTNET-INFRA-MNT
created:        2015-06-17T07:29:25Z
last-modified:  2025-05-12T17:35:27Z
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:           Plusnet Hostmaster
address:        PlusNet Plc
address:        The Balance
address:        2 Pinfold Street
address:        Sheffield
address:        S1 2GU
address:        UK
phone:          +44 114 2200084
e-mail:         hostmaster@plus.net
abuse-mailbox:  abuse@plus.net
remarks:        ------------------------------------------------
remarks:        Please do NOT e-mail abuse to the contacts given
remarks:        here, e-mail them to ABUSE@PLUS.NET instead.
remarks:        All email sent to other listed addresses will
remarks:        be deleted!
remarks:        ------------------------------------------------
remarks:        Network Status and Information Page:
remarks:        http://status.plus.net
remarks:        http://support.plus.net
remarks:        ------------------------------------------------
remarks:        Support 24*7 Phone: (UK) 0845 140 0200
remarks:        ------------------------------------------------
admin-c:        JW7886-RIPE
tech-c:         DS3916-RIPE
nic-hdl:        PNET2-RIPE
notify:         ripe-admin@plus.net
mnt-by:         MAINT-AS6871
created:        2002-05-16T12:18:00Z
last-modified:  2018-01-17T15:40:44Z
source:         RIPE

route:          51.9.0.0/16
descr:          PlusNet plc.
origin:         AS6871
mnt-by:         MAINT-AS6871
created:        2015-12-10T11:53:03Z
last-modified:  2015-12-10T11:53:03Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 51.0.0.0/8

Range	ASN	Company	Num of IPs
51.140.0.0/14	AS8075	Microsoft Limited UK	262,144
51.254.0.0/15	AS16276	OVH SAS	131,072
51.12.0.0/15	AS8075	Microsoft Limited UK	131,072
51.136.0.0/15	AS8075	Microsoft Limited UK	131,072
51.144.0.0/15	AS8075	Microsoft Limited UK	131,072
51.6.0.0/15	AS6871		131,072
51.104.0.0/15	AS8075	Microsoft Limited UK	131,072
51.10.0.0/15	AS8075	Microsoft Limited UK	131,072
51.4.0.0/15	AS200517	Microsoft Deutschland MCIO GmbH	131,072
51.186.0.0/15	AS5607	SKY UK Limited	131,072
51.158.0.0/15	AS12876	Scaleway	131,072
51.190.0.0/15	AS210278	SKY UK Limited	131,072
51.182.0.0/15	AS210278	SKY UK Limited	131,072
51.174.0.0/15	AS29695	Altibox AS	131,072
51.75.0.0/16	AS16276	OVH SAS	65,536
51.194.0.0/16	AS5607	SKY UK Limited	65,536
51.37.0.0/16	AS15502	Vodafone Ireland Limited	65,536
51.38.0.0/16	AS16276	OVH SAS	65,536
51.155.0.0/16	AS13037	Zen Internet Limited	65,536
51.210.0.0/16	AS16276	OVH SAS	65,536
51.124.0.0/16	AS8075	Microsoft Limited UK	65,536
51.77.0.0/16	AS16276	OVH SAS	65,536
51.171.0.0/16	AS5466	Eircom Limited	65,536
51.132.0.0/16	AS8075	Microsoft Limited UK	65,536
51.103.0.0/16	AS8075	Microsoft Limited UK	65,536
51.52.0.0/16	AS31655	Gamma Telecom Limited	65,536
51.116.0.0/16	AS8075	Microsoft Limited UK	65,536
51.53.0.0/16	AS8075	Microsoft Limited UK	65,536
51.51.0.0/16	AS8075	Microsoft Limited UK	65,536
51.178.0.0/16	AS16276	OVH SAS	65,536
51.8.0.0/16	AS200517	Microsoft Deutschland MCIO GmbH	65,536
51.91.0.0/16	AS16276	OVH SAS	65,536
51.15.0.0/16	AS12876	Scaleway - Paris, France	65,536
51.68.0.0/16	AS16276	OVH SAS	65,536
51.89.0.0/16	AS16276	OVH SAS	65,536
51.138.0.0/16	AS8075	Microsoft Limited UK	65,536
51.107.0.0/16	AS8075	Microsoft Limited UK	65,536
51.195.0.0/16	AS16276	OVH SAS	65,536
51.222.0.0/16	AS16276	OVH Hosting, Inc.	65,536
51.19.0.0/16	AS5607	SKY UK Limited	65,536
51.83.0.0/16	AS16276	OVH SAS	65,536
51.120.0.0/16	AS8075	Microsoft Limited UK	65,536
51.14.0.0/16	AS2856	BT-CENTRAL-PLUS	65,536
51.146.0.0/16	AS5607	Sky UK Limited	65,536
51.148.0.0/16	AS13037	Zen Internet Limited	65,536
51.241.0.0/16	AS5607	SKY UK Limited	65,536
51.154.0.0/16	AS15796	Salt Mobile SA	65,536
51.219.0.0/16	AS31655	Gamma Telecom Limited	65,536
51.81.0.0/17	AS16276	OVH US LLC	32,768

Show more ranges

Hosted domains

There are 40 domain names hosted across 35 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
51.9.55.149	nussole.eu	4
51.9.201.100	theshrubsoles.co.uk	2
51.9.172.150	transcender.space	2
51.9.33.233	pigeonland.uk	1
51.9.221.108	cowdar.rocks	1
51.9.165.228	policepigeon.dev	1
51.9.200.176	pure-computers.co.uk	1
51.9.89.104	gresty.xyz	1
51.9.184.208	listerm.uk	1
51.9.122.225	cbict.com	1
51.9.185.225	bkworld.uk	1
51.9.25.244	techsabre.co.uk	1
51.9.63.239	burbridge.uk	1
51.9.134.10	froodleplex.com	1
51.9.79.154	logiseccloud.com	1
51.9.197.0	pcflight.net	1
51.9.165.219	asmsolutions.co.uk	1
51.9.184.110	g0hkc.com	1
51.9.144.60	cfcontrol.co.uk	1
51.9.65.171	orangeandred.co.uk	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

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales