Charles River Operation
Cluster stats
| Netblocks | 82 |
| All fragments | 90 blocks across 5 clusters |
| Cluster ID | 191605216 |
| Registry | AFRINIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 38 shared RIR contact/maintainer handles |
| Registry names | 15 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (82)
showing 50 of 82 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 5.182.51.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 5.182.199.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 31.132.54.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 38.124.1.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 38.146.55.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 38.242.7.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 38.242.12.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 38.242.18.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 38.242.24.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 44.32.53.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 44.104.110.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 45.10.23.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 45.58.211.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 45.67.142.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 45.67.143.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 45.67.144.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 52.124.20.0/23 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 58.185.2.240/28 | CHARLES-SG | APNIC | ASSIGNED NON-PORTABLE | ● high |
| 63.246.128.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 63.246.156.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 63.246.157.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 63.251.142.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 66.150.192.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 66.150.196.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 66.150.198.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 67.22.61.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 67.22.62.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 74.118.68.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 74.118.69.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 74.118.70.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 74.118.71.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 79.98.181.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 79.98.182.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 80.239.139.244/30 | Charles River Labs | RIPE | ASSIGNED PA | ● high |
| 83.143.107.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 92.249.28.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 94.154.168.0/23 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 94.154.176.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 94.154.179.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 144.86.187.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 147.189.137.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.3.45.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.3.129.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.3.222.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.3.236.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.3.237.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.9.0.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.9.154.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.12.2.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
| 154.12.6.0/24 | Charles River Operation | BGP | ANNOUNCED | ● high |
Network trust
what's this?
RPKI hygiene: C
how networks compare →
50.0%
of checked blocks have valid RPKI ROA coverage
(41 of 82)
Possible discrepancies (2)
These blocks are registered to Charles River Operation 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.
| 2a00:2381:f4eb::/48 /48 | authorized for AS2856 — British Telecommunications PLC |
| 2a00:2381:f4eb::/56 /56 | authorized for AS2856 — British Telecommunications PLC |
NIC Handles
AA1319-AP
AA1319-AP
AE150-AP
AH323-AP
ALAXONA
AO49-afrinic
AO49-afrinic
AS2068-AP
AS40834
AS64249
AS8426-MNT
BTNET-MNT
+26 more