AS4991
Cogent Communications, LLC
AS4991 is Cogent Communications, LLC (cogentco.com). It announces 16,384 IPv4 addresses in 1 prefix, and 0 IPv6 prefixes.
United States· ARIN· allocated 1995-05-31· ISP
16,384
IPv4 addresses announced
1
IPv4 prefix
0
IPv6 prefixes
0.00%
of its routes RPKI-valid
16,384
of its IPv4 geolocated
1
country
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States16,384 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- COGENT-4991-4994
- 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
- 1995-05-31
- updated
- 2025-09-23
- 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.
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- 0.02%
- None here
- 0.02%
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 204.6.192.0/18 | United States | Not found | 17 | 2026-10-02 |
00 · Evaluate
Test the real build first.
An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.
01 · License
Then license what you use.
Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell, priced by scope rather than by seat.
Annual terms, a named contact, and monthly, quarterly or yearly payment.