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

United States
AS Number
AS4991
AS Name
COGENT-4991-4994
Org Name
Cogent Communications, LLC
Country / Region
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

CIDR Description IP Num
204.6.192.0/18
IRR InValid
Cogent Communications, LLC 16384
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS54054 DETEQUE - Deteque, US United States 2,816 4,295,032,832 IPv4 IPv4 
ASNumber:       4991
ASName:         COGENT-4991-4994
ASHandle:       AS4991
RegDate:        1995-05-31
Updated:        2025-09-23
Ref:            https://rdap.arin.net/registry/autnum/4991

OrgID:          COGC
OrgName:        Cogent Communications, LLC
CanAllocate:    
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
RegDate:        2000-05-30
Updated:        2025-09-23
ReferralServer: rwhois://rwhois.cogentco.com:4321
OrgAdminHandle  IPALL-ARIN
OrgTechHandle   IPALL-ARIN
OrgAbuseHandle  COGEN-ARIN
OrgNOCHandle    ZC108-ARIN
Source:         ARIN

OrgAdminHandleHandle:  IPALL-ARIN
OrgAdminHandleName:    IP Allocation, 
OrgAdminHandlePhone:   +1-877-875-4311
OrgAdminHandleEmail:   [email protected]
OrgAdminHandleRef:     https://rdap.arin.net/registry/entity/IPALL-ARIN

OrgTechHandleHandle:  IPALL-ARIN
OrgTechHandleName:    IP Allocation, 
OrgTechHandlePhone:   +1-877-875-4311
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/IPALL-ARIN

OrgAbuseHandleHandle:  COGEN-ARIN
OrgAbuseHandleName:    Cogent Abuse, 
OrgAbuseHandlePhone:   +1-877-875-4311
OrgAbuseHandleEmail:   [email protected]
OrgAbuseHandleRef:     https://rdap.arin.net/registry/entity/COGEN-ARIN

OrgNOCHandleHandle:  ZC108-ARIN
OrgNOCHandleName:    Cogent Communications, 
OrgNOCHandlePhone:   +1-877-875-4311
OrgNOCHandleEmail:   [email protected]
OrgNOCHandleRef:     https://rdap.arin.net/registry/entity/ZC108-ARIN