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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 hosted81,317
Number of nameservers hosted3,043
Number of mailservers hosted5,517
Number of SPAM hosts hosted623
Number of IP routes523

Subnets based on RIR allocations

SubnetDescriptionRIRCountry#routes#domains#spamhosts
172.0.0.0/12AT&T Internet ServicesarinUS11,02619
172.32.0.0/11T-Mobile USA, Inc.arinUS549245
172.128.0.0/10AOL Inc.arinUS61661
172.192.0.0/13FOXTEL Management Pty LtdapnicAU140
172.200.0.0/13AOL Inc.arinUS8190
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.arinCA2151
172.220.0.0/14BRIGHT HOUSE NETWORKS, LLCarinUS1100
172.224.0.0/12Akamai Technologies, Inc.arinUS2568920
172.240.0.0/15Nobis Technology Group, LLCarinUS4718,8528
172.242.0.0/15Viasat Communications Inc.arinUS313659
172.244.0.0/16Comcast Cable Communications, LLCarinUS100
172.245.0.0/16ColoCrossingarinUS248,879109
172.246.0.0/16Enzu IncarinUS1322,50214
172.247.0.0/16CloudRadium L.L.CarinUS2514,97135
172.248.0.0/14Time Warner Cable Internet LLCarinUS1228121
172.252.0.0/16EGIHostingarinUS23,6000
172.253.0.0/16Google Inc.arinUS100
172.254.0.0/16Time Warner Cable Internet LLCarinUS11511
172.255.0.0/16Nobis Technology Group, LLCarinUS238,4080

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Whois information

NetRange:       172.0.0.0 - 172.255.255.255
CIDR:           172.0.0.0/8
OriginAS:       
NetName:        NET172
NetHandle:      NET-172-0-0-0-0
Parent:         
NetType:        Early Registrations, Maintained by ARIN
RegDate:        1993-05-01
Updated:        2010-06-30
Ref:            http://whois.arin.net/rest/net/NET-172-0-0-0-0

OrgName:        Various Registries (Maintained by ARIN)
OrgId:          VR-ARIN
Address:        3635 Concord Parkway, Suite 200
City:           Chantilly
StateProv:      VA
PostalCode:     20151
Country:        US
RegDate:        1993-05-01
Updated:        2011-09-24
Comment:        Address space was assigned by the InterNIC regardless of
Comment:        geographic region.  The registrations are now being maintained
Comment:        by various registries, and the in-addr.arpa delegations are
Comment:        being maintained by ARIN.
Ref:            http://whois.arin.net/rest/org/VR-ARIN

OrgTechHandle: CKN23-ARIN
OrgTechName:   No, Contact Known
OrgTechPhone:  +1-800-555-1234 
OrgTechEmail:  nobody@example.com
OrgTechRef:    http://whois.arin.net/rest/poc/CKN23-ARIN

OrgAbuseHandle: CKN23-ARIN
OrgAbuseName:   No, Contact Known
OrgAbusePhone:  +1-800-555-1234 
OrgAbuseEmail:  nobody@example.com
OrgAbuseRef:    http://whois.arin.net/rest/poc/CKN23-ARIN