AS Number
AS7421
AS Name
COGENT-7421
Org Name
Cogent Communications, LLC
Registry

arin

RegDate

2000-05-30

Updated

2025-09-23

AS7421 Looking Glass
IPv4Prefixes

2

IPv6Prefixes

0

IPv4 NUMs

163,840

IPv6 NUMs(/64)

0

163,840 IPv4 Addresses
CIDR Description IP Num
204.204.0.0/15 Sprint 131072
209.120.0.0/17 Cogent Communications, LLC 32768
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS174 COGENT-174 - Cogent Communications, LLC, US United States 35,919,616 185,692,717,056 IPv4 IPv4
AS1299 TWELVE99 - Arelion Sweden AB, SE Sweden 394,496 77,326,909,440 IPv4 IPv4
AS3491 CONSOLE-CONNECT-ASN - PCCW Global, Inc., US United States 1,156,608 13,421,838,336 IPv4 IPv4
AS6762 SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT Italy 291,840 8,590,000,128 IPv4 IPv4
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 105,728 77,403,783,168 IPv4 IPv4
AS199524 GCORE - G-Core Labs S.A., LU Luxembourg 124,320 112,721,920 IPv4 IPv4
ASNumber:       7421
ASName:         COGENT-7421
ASHandle:       AS7421
RegDate:        1996-12-06
Updated:        2025-12-23    
Ref:            https://rdap.arin.net/registry/autnum/7421



OrgName:        Cogent Communications, LLC
OrgId:          COGC
Address:        2450 N Street NW
City:           Washington
StateProv:      DC
PostalCode:     20037
Country:        US
RegDate:        2000-05-30
Updated:        2025-09-23
Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref:            https://rdap.arin.net/registry/entity/COGC

ReferralServer:  rwhois://rwhois.cogentco.com:4321

OrgTechHandle: IPALL-ARIN
OrgTechName:   IP Allocation
OrgTechPhone:  +1-877-875-4311 
OrgTechEmail:  ipalloc@cogentco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPALL-ARIN

OrgNOCHandle: ZC108-ARIN
OrgNOCName:   Cogent Communications
OrgNOCPhone:  +1-877-875-4311 
OrgNOCEmail:  noc@cogentco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName:   Cogent Abuse
OrgAbusePhone:  +1-877-875-4311 
OrgAbuseEmail:  abuse@cogentco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-ARIN