Cogent Communications, LLC
AS4000 is Cogent Communications, LLC (cogentco.com). It announces 0 IPv4 addresses in 0 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 1994-11-04· ISP· cogentco.com
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- COGENT-4000
- name
- Cogent Communications, LLC
- org
- COGC
- org name
- Cogent Communications, LLC
- org address
- 2450 N Street NW, Washington, DC, 20037
- org city
- Washington
- org country
- US
- country
- US
- source
- arin
- created
- 1994-11-04
- updated
- 2025-12-23
- abuse name
- Cogent Abuse
- abuse email
- abuse@cogentco.com
- abuse phone
- +1-877-875-4311
- abuse kind
- role
- abuse city
- Washington
- abuse country
- US
- admin name
- IP Allocation
- admin email
- ipalloc@cogentco.com
- admin phone
- +1-877-875-4311
- admin kind
- role
- admin city
- Washington
- admin country
- US
- tech name
- IP Allocation
- tech email
- ipalloc@cogentco.com
- tech phone
- +1-877-875-4311
- tech kind
- role
- tech city
- Washington
- tech country
- US
- abuse validated
- 1
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
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Test the real build first.
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