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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 hosted119,451
Number of nameservers hosted3,034
Number of mailservers hosted1,869
Number of SPAM hosts hosted618
Number of IP routes540

Subnets based on RIR allocations

SubnetDescriptionRIRCountry#routes#domains#spamhosts
172.0.0.0/12AT&T Internet ServicesarinUS11,10610
172.32.0.0/11T-Mobile USA, Inc.arinUS1154213
172.128.0.0/10AOL Inc.arinUS68662
172.192.0.0/13AOL Inc.apnicAU140
172.200.0.0/13AOL Inc.arinUS8161
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, LLCarinUS1120
172.224.0.0/12Akamai Technologies, Inc.arinUS2605930
172.240.0.0/15Nobis Technology Group, LLCarinUS4733,2621
172.242.0.0/15Viasat Communications Inc.arinUS314054
172.244.0.0/16Comcast Cable Communications, LLCarinUS100
172.245.0.0/16ColoCrossingarinUS249,304187
172.246.0.0/16Enzu IncarinUS1336,90332
172.247.0.0/16CloudRadium L.L.CarinUS2520,2260
172.248.0.0/14Time Warner Cable Internet LLCarinUS1244112
172.252.0.0/16EGIHostingarinUS23750
172.253.0.0/16Google Inc.arinUS100
172.254.0.0/16Time Warner Cable Internet LLCarinUS1164
172.255.0.0/16Nobis Technology Group, LLCarinUS2315,5000

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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