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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 hosted109,716
Number of nameservers hosted3,023
Number of mailservers hosted3,515
Number of SPAM hosts hosted735
Number of IP routes533

Subnets based on RIR allocations

SubnetDescriptionRIRCountry#routes#domains#spamhosts
172.0.0.0/12AT&T Internet ServicesarinUS11,08811
172.32.0.0/11T-Mobile USA, Inc.arinUS1254382
172.128.0.0/10AOL Inc.arinUS63691
172.192.0.0/13AOL Inc.apnicAU140
172.200.0.0/13AOL Inc.arinUS8160
172.208.0.0/13AOL Inc.arinUS620
172.216.0.0/16AOL Inc.arinUS000
172.217.0.0/16Google Inc.arinUS100
172.218.0.0/15TELUS Communications Inc.arinCA2120
172.220.0.0/14BRIGHT HOUSE NETWORKS, LLCarinUS1100
172.224.0.0/12Akamai Technologies, Inc.arinUS2572680
172.240.0.0/15Nobis Technology Group, LLCarinUS4727,2800
172.242.0.0/15Viasat Communications Inc.arinUS314153
172.244.0.0/16Comcast Cable Communications, LLCarinUS100
172.245.0.0/16ColoCrossingarinUS249,384131
172.246.0.0/16Enzu IncarinUS1334,04328
172.247.0.0/16CloudRadium L.L.CarinUS2519,7697
172.248.0.0/14Time Warner Cable Internet LLCarinUS1251113
172.252.0.0/16EGIHostingarinUS21,4450
172.253.0.0/16Google Inc.arinUS100
172.254.0.0/16Time Warner Cable Internet LLCarinUS1189
172.255.0.0/16Nobis Technology Group, LLCarinUS2314,3160

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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