COGENT COMMUNICATIONS GROUP, LLC
Cogent Communications, LLC
GLEIF verified
LEI
549300KFWFYF8Q1U0Y26
Registered name
COGENT COMMUNICATIONS GROUP, LLC
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 47 |
| All fragments | 4,891 blocks across 4 clusters |
| Cluster ID | 204709827 |
| Registry | BGP |
| Owner jurisdiction | US-DE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 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 (47)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 38.225.91.0/24 | Cogent Communications, LLC | BGP | ANNOUNCED | ● medium |
| 104.234.7.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.40.0/21 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.40.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.41.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.42.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.43.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.44.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.45.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.46.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.47.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.48.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.48.0/22 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.49.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.50.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.51.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.208.0/20 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.208.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.209.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.210.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.211.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.212.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.213.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.214.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.215.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.216.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.217.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.218.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.219.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.220.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.221.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.222.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.223.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.224.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.224.0/21 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.225.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.226.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.227.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.228.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.229.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.230.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.231.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.232.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.232.0/22 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.233.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.234.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
| 217.60.235.0/24 | AS273091 | BGP | ANNOUNCED | ● medium |
Corporate group (4 confirmed entities)
+1 additional unconfirmed candidate not shown — full list (JSON)- Cogent Communications, LLC 4,828 blocks
- Cogent Communications, LLC 9 blocks
- Cogent Communications, LLC 7 blocks
Network trust
what's this?
RPKI hygiene: A
how networks compare →
97.9%
of checked blocks have valid RPKI ROA coverage
(46 of 47)
Possible discrepancies (46)
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.
| 217.60.208.0/20 /20 | authorized for AS273091 — AS273091 |
| 217.60.40.0/21 /21 | authorized for AS273091 — AS273091 |
| 217.60.224.0/21 /21 | authorized for AS273091 — AS273091 |
| 217.60.48.0/22 /22 | authorized for AS273091 — AS273091 |
| 217.60.232.0/22 /22 | authorized for AS273091 — AS273091 |
| 104.234.7.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.40.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.41.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.42.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.43.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.44.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.45.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.46.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.47.0/24 /24 | authorized for AS273091 — AS273091 |
| 217.60.48.0/24 /24 | authorized for AS273091 — AS273091 |
+31 more — see the REST API
NIC Handles
AS174
AS273091
GOLD-MNT
lir-ae-goldip-1-MNT