AS4991 - COGENT-4991-4994 - Cogent Communications, LLC, US

United States
AS Number
AS0
AS Name
COGENT-4991-4994
Org Name
Cogent Communications, LLC
Country
United States
Registry

arin

RegDate

2000-05-30

Updated

2025-09-23

AS4991 Looking Glass
IPv4Prefixes

1

IPv6Prefixes

0

IPv4 NUMs

16,384

IPv6 NUMs(/64)

0

16,384 IPv4 Addresses
CIDR Description IP Num
204.6.192.0/18 PSINet, Inc. 16384
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS54054 DETEQUE, US United States 2,560 4,295,032,832 IPv4 IPv4 
ASNumber:       4991 - 4994
ASName:         COGENT-4991-4994
ASHandle:       AS4991
RegDate:        1995-05-31
Updated:        2025-09-23    
Ref:            https://rdap.arin.net/registry/autnum/4991



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

OrgNOCHandle: ZC108-ARIN
OrgNOCName:   Cogent Communications
OrgNOCPhone:  +1-877-875-4311 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN

OrgTechHandle: IPALL-ARIN
OrgTechName:   IP Allocation
OrgTechPhone:  +1-877-875-4311 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/IPALL-ARIN

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName:   Cogent Abuse
OrgAbusePhone:  +1-877-875-4311 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-ARIN