COGENT COMMUNICATIONS GROUP, LLC

Cogent Communications, LLC
GLEIF verified
LEI
549300KFWFYF8Q1U0Y26
Registered name
COGENT COMMUNICATIONS GROUP, LLC
Jurisdiction
US-DE
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks7
All fragments 4,891 blocks across 4 clusters
Cluster ID207702667
RegistryBGP
Owner jurisdictionUS-DE
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 549300KFWFYF8Q1U0Y26
Shared handles clustered on 4 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

4 weekly snapshots · JSON
4,891 +115 netblocks since 2026-07-05
2026-07-05 peak 4,891 2026-07-13

IP Ranges (7)

⬇ export CSV
CIDR Org name Registry Status Confidence
38.188.160.0/24 Cogent Communications, LLC BGP ANNOUNCED ● medium
38.188.161.0/24 Cogent Communications, LLC BGP ANNOUNCED ● medium
38.188.165.0/24 Cogent Communications, LLC BGP ANNOUNCED ● medium
45.85.180.0/24 AS273113 BGP ANNOUNCED ● medium
45.85.183.0/24 AS273113 BGP ANNOUNCED ● medium
2803:6850:1::/48 AS273113 BGP ANNOUNCED ● medium
2803:6850:5::/48 AS273113 BGP ANNOUNCED ● medium

Corporate group (4 confirmed entities)

+1 additional unconfirmed candidate not shown — full list (JSON)

Network trust

what's this?
RPKI hygiene: C how networks compare →
57.1% of checked blocks have valid RPKI ROA coverage (4 of 7)
Possible discrepancies (4)

These blocks are registered to Cogent Communications, LLC but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2803:6850:1::/48 /48 authorized for AS273113 — AS273113
2803:6850:5::/48 /48 authorized for AS273113 — AS273113
45.85.180.0/24 /24 authorized for AS273113 — AS273113
45.85.183.0/24 /24 authorized for AS273113 — AS273113

NIC Handles

AS174 AS273113 mnt-es-fourmirror3-1 mnt-ipbroker