81.17.64.0/20

AS21470 · South West Communications Group Ltd

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Summary

Country	United Kingdom
Domain	southwestcommunications.co.uk
ASN	AS21470
Registry	RIPE
ID	UK-SWTNETWORKS-20020108

WHOIS Details

inetnum:        81.17.64.0 - 81.17.79.255
org:            ORG-SNL4-RIPE
netname:        UK-SWTNETWORKS-20020108
country:        GB
admin-c:        JH444-RIPE
tech-c:         JH444-RIPE
tech-c:         LG7001-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SWCDC-MNT
mnt-routes:     SWCDC-MNT
notify:         datacenter@swcomms.co.uk
created:        2002-01-08T15:41:34Z
last-modified:  2020-11-13T08:55:51Z
source:         RIPE
abuse-email:    abuse@swcomms.co.uk
abuse-c:        AA26847-RIPE
abuse-org:      ORG-SNL4-RIPE

organisation:   ORG-SNL4-RIPE
org-name:       South West Communications Group Ltd
country:        GB
org-type:       LIR
address:        Communications House Moor Lane/Sowton/Exeter
address:        EX2 7JF
address:        Devon
address:        UNITED KINGDOM
phone:          +441392369369
fax-no:         +441392360011
mnt-ref:        SWCDC-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SWCDC-MNT
admin-c:        JH444-RIPE
admin-c:        LG7001-RIPE
e-mail:         support@swcomms.co.uk
abuse-c:        AA26847-RIPE
created:        2004-04-17T12:22:02Z
last-modified:  2020-12-16T12:34:15Z
source:         RIPE

person:         John Holdstock
address:        South West Communications Group Ltd
address:        Communications House
address:        Moor Lane, Sowton
address:        Exeter, Devon, England.
phone:          +0044 1392 369369
fax-no:         +0044 1392 360011
nic-hdl:        JH444-RIPE
e-mail:         john.holdstock@swcomms.co.uk
notify:         john.holdstock@swcomms.co.uk
created:        2001-11-26T17:42:50Z
last-modified:  2016-04-06T00:51:21Z
mnt-by:         RIPE-NCC-LOCKED-MNT
source:         RIPE

person:         Lindsey Green
address:        South West Communications Group LTD
address:        Communications House
address:        Moor Lane
address:        Exeter
phone:          +0044 1392 369369
nic-hdl:        LG7001-RIPE
mnt-by:         SWCDC-MNT
created:        2013-11-25T14:27:20Z
last-modified:  2013-11-25T14:27:20Z
source:         RIPE

route:          81.17.64.0/20
descr:          South West Communications Group Ltd
origin:         AS21470
mnt-by:         SWCDC-MNT
created:        2002-01-22T17:09:19Z
last-modified:  2009-10-26T10:42:32Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.17.0.0/16

Range	ASN	Company	Num of IPs
81.17.240.0/20	AS39122	Blacknight Internet Solutions Limited	4,096
81.17.208.0/20	AS35833	mpex GmbH	4,096
81.17.176.0/20	AS20845	DIGI - INVITEL pool	4,096
81.17.0.0/20	AS21353	JSC ER-Telecom Holding	4,096
81.17.16.0/20	AS51852	Private Layer INC	4,096
81.17.0.0/20	AS24588	JSC ER-Telecom Holding	4,096
81.17.80.0/20	AS28787	Aztelekom LLC	4,096
81.17.200.0/21	AS15830	Equinix (Finland) Oy	2,048
81.17.56.0/21	AS205544	Leaseweb UK Limited	2,048
81.17.168.0/21	AS9304	Private Customer	2,048
81.17.160.0/21	AS398704	Private Customer	2,048
81.17.160.0/21	AS9304	Private Customer	2,048
81.17.192.0/21	AS29422	Telia Cygate Oy	2,048
81.17.168.0/21	AS398704	Private Customer	2,048
81.17.100.0/22	AS51167	Contabo GmbH	1,024
81.17.96.0/22	AS51167	Contabo GmbH	1,024
81.17.224.0/22	AS25467	Akton network Slovenia	1,024
81.17.236.0/23	AS25467	Akton network Bosnia and Herzegovina	512
81.17.228.0/23	AS25467	Akton d.o.o.	512
81.17.232.0/23	AS25467	Akton Network Macedonia	512
81.17.121.0/24	AS136787	Packethub S.A.	256
81.17.240.0/24	AS39122	Blacknight Network Infrastructure	256
81.17.234.0/24	AS25467	Akton Podgorica Montenegro	256
81.17.159.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.17.140.0/24	AS21500	ipv4 assignment for VPS	256
81.17.136.0/24	AS21437	ipv4 assignment for shared hosting platform	256
81.17.128.0/24	AS21437	ISP TNS	256
81.17.141.0/24	AS60918	KHADI core net	256
81.17.120.0/24	AS7979	S.S NETSHOP INTERNET SERVICES LTD	256
81.17.158.0/24	AS8342	Limited Liability Company DZHISIIKS	256
81.17.154.0/24	AS9123	JSC TIMEWEB	256
81.17.122.0/24	AS212238	Packethub S.A.	256
81.17.123.0/24	AS207137	Packethub S.A.	256

Hosted domains

There are 475 domain names hosted across 65 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.17.75.201	lacl.uk	59
81.17.79.76	vmn.digital	49
81.17.72.180	poundcall.co.uk	39
81.17.72.181	disrepair.claims	36
81.17.69.118	celticandco.com.cn	29
81.17.73.7	ambynt.com	28
81.17.72.179	wishgenie.com	27
81.17.70.61	londonandcountrymortgages.co.uk	26
81.17.78.173	idocsol.co.uk	23
81.17.73.3	funky-products.com	21
81.17.66.190	sslegal.co.uk	21
81.17.79.75	vetstv.uk	19
81.17.67.12	toshibatelecoms.uk	12
81.17.70.73	mrbenn.com	9
81.17.72.75	absolutetradition.co.uk	4
81.17.75.193	ulsterfarmersmart.co.uk	4
81.17.70.74	hiltonherbsblog.fr	4
81.17.77.178	hybridmailportal.com	3
81.17.72.74	royalnavalshop.co.uk	3
81.17.69.113	scillyflowers.com	3

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

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

IP Address	ASN	Details
81.17.74.84	AS21470 South West Communications Group Ltd	`4.11ms` from London, GB
81.17.66.217	AS21470 South West Communications Group Ltd	`3.91ms` from London, GB
81.17.78.168	AS21470 South West Communications Group Ltd	`3.92ms` from London, GB
81.17.75.227	AS21470 South West Communications Group Ltd	`3.93ms` from London, GB
81.17.79.242	AS21470 South West Communications Group Ltd	`3.92ms` from London, GB
81.17.65.134	AS21470 South West Communications Group Ltd	`4.21ms` from London, GB
81.17.70.73	AS21470 South West Communications Group Ltd	`4.22ms` from London, GB
81.17.72.178	AS21470 South West Communications Group Ltd	`3.93ms` from London, GB
81.17.76.77	AS21470 South West Communications Group Ltd	`3.98ms` from London, GB
81.17.77.103	AS21470 South West Communications Group Ltd	`3.93ms` from London, GB
81.17.73.158	AS21470 South West Communications Group Ltd	`4.11ms` from London, GB
81.17.68.4	AS21470 South West Communications Group Ltd	`4.15ms` 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
105.105.218.244	AS36947 Telecom Algeria	`14.32ms` from Algiers, DZ
52.98.223.164	AS8075 Microsoft Corporation	`1.28ms` from Amsterdam, NL
185.118.104.180	AS3356 Level 3 Parent, LLC	`0.47ms` from Barcelona, ES
119.50.232.116	AS4837 CHINA UNICOM China169 Backbone	`10.12ms` from Changchun, CN
27.8.101.36	AS4837 CHINA UNICOM China169 Backbone	`5.00ms` from Chongqing, CN
216.11.60.100	AS14241 Oakland Schools	`1.55ms` from Detroit, US
91.53.58.100	AS3320 Deutsche Telekom AG	`4.12ms` from Frankfurt am Main, DE
218.20.4.180	AS4134 CHINANET-BACKBONE	`2.41ms` from Guangzhou, CN
117.87.191.212	AS4134 CHINANET-BACKBONE	`9.35ms` from Huai'an, CN
159.224.107.212	AS13188 CONTENT DELIVERY NETWORK LTD	`5.13ms` from Kyiv, UA
119.179.20.244	AS4837 CHINA UNICOM China169 Backbone	`10.10ms` from Qingdao, CN
115.136.47.244	AS17858 LG POWERCOMM	`1.41ms` from Seoul, KR
122.36.99.20	AS17858 LG POWERCOMM	`3.15ms` from Seoul, KR
119.201.13.244	AS4766 Korea Telecom	`4.89ms` from Seoul, KR
1.161.220.180	AS3462 Data Communication Business Group	`1.59ms` from Taipei, TW
213.60.218.36	AS12334 R Cable y Telecable Telecomunicaciones, S.A.U.	`0.38ms` from A Coruna, ES
87.202.113.20	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`5.30ms` from Athens, GR
196.127.68.196	AS36925 MEDITELECOM	`3.66ms` from Casablanca, MA
3.13.200.196	AS16509 Amazon.com, Inc.	`0.18ms` from Columbus, US
176.20.94.212	AS3292 TDC Holding A/S	`1.11ms` from Copenhagen, DK
178.30.251.228	AS8434 Telenor Sverige AB	`19.54ms` from Copenhagen, DK
20.9.3.100	AS8075 Microsoft Corporation	`0.16ms` from Des Moines, US
34.245.52.36	AS16509 Amazon.com, Inc.	`0.16ms` from Dublin, IE
2.243.177.20	AS6805 Telefonica Germany GmbH & Co.OHG	`3.26ms` from Duesseldorf, DE
41.169.53.4	AS36937 Liquid Telecommunications South Africa (Pty) Ltd	`1.38ms` from Johannesburg, ZA

Traceroute

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

traceroute -a -n -q1 -f3 81.17.79.1

traceroute to 81.17.79.1 (81.17.79.1): 64 hops max, 52 byte packets

3 [AS3356] 217.163.113.30 107.316 ms

4 [AS21470] 81.17.79.1 104.965 ms

Measurement taken from

IPinfo ProbeNet in Little Rock, US

On February 7th 2026

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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