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Home -> IPv4 root -> 172/8 -> 172.0.0.0/8

Summary for subnet 172.0.0.0/8

IP-range/subnet172.0.0.0-172.255.255.255
DescriptionAdministered by ARIN
LocationUnited States (US) flag
Registryarin
Number of domains hosted103,577
Number of nameservers hosted3,085
Number of mailservers hosted4,516
Number of SPAM hosts hosted607
Number of IP routes527

Subnets based on RIR allocations

SubnetDescriptionRIRCountry#routes#domains#spamhosts
172.0.0.0/12AT&T Internet ServicesarinUS11,1078
172.32.0.0/11T-Mobile USA, Inc.arinUS851334
172.128.0.0/10AOL Inc.arinUS62680
172.192.0.0/13FOXTEL Management Pty LtdapnicAU150
172.200.0.0/13AOL Inc.arinUS8170
172.208.0.0/13AOL Inc.arinUS621
172.216.0.0/16AOL Inc.arinUS000
172.217.0.0/16Google Inc.arinUS110
172.218.0.0/15TELUS Communications Inc.arinCA2151
172.220.0.0/14BRIGHT HOUSE NETWORKS, LLCarinUS1100
172.224.0.0/12Akamai Technologies, Inc.arinUS2563380
172.240.0.0/15Nobis Technology Group, LLCarinUS4723,9742
172.242.0.0/15Viasat Communications Inc.arinUS313956
172.244.0.0/16Comcast Cable Communications, LLCarinUS100
172.245.0.0/16ColoCrossingarinUS249,29567
172.246.0.0/16Enzu IncarinUS1331,44824
172.247.0.0/16CloudRadium L.L.CarinUS2518,9622
172.248.0.0/14Time Warner Cable Internet LLCarinUS1251103
172.252.0.0/16EGIHostingarinUS22,3470
172.253.0.0/16Google Inc.arinUS100
172.254.0.0/16Time Warner Cable Internet LLCarinUS1186
172.255.0.0/16Nobis Technology Group, LLCarinUS2313,9530

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Whois information

NetRange172.0.0.0 - 172.255.255.255
CIDR172.0.0.0/8
OriginAS
NetNameNET172
NetHandleNET-172-0-0-0-0
Parent
NetTypeEarly Registrations, Maintained by ARIN
RegDate1993-05-01
Updated2010-06-30
Refhttp://whois.arin.net/rest/net/NET-172-0-0-0-0
OrgNameVarious Registries (Maintained by ARIN)
OrgIdVR-ARIN
Address3635 Concord Parkway, Suite 200
CityChantilly
StateProvVA
PostalCode20151
CountryUS
RegDate1993-05-01
Updated2011-09-24
CommentAddress space was assigned by the InterNIC regardless of
Commentgeographic region. The registrations are now being maintained
Commentby various registries, and the in-addr.arpa delegations are
Commentbeing maintained by ARIN.
Refhttp://whois.arin.net/rest/org/VR-ARIN
OrgTechHandleCKN23-ARIN
OrgTechNameNo, Contact Known
OrgTechPhone+1-800-555-1234
OrgTechEmailnobody@example.com
OrgTechRefhttp://whois.arin.net/rest/poc/CKN23-ARIN
OrgAbuseHandleCKN23-ARIN
OrgAbuseNameNo, Contact Known
OrgAbusePhone+1-800-555-1234
OrgAbuseEmailnobody@example.com
OrgAbuseRefhttp://whois.arin.net/rest/poc/CKN23-ARIN