National Cyber Security Centre
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 2 · 256 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a0c:9880::/32) |
| All fragments | 19 blocks across 2 clusters |
| Cluster ID | 216404620 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 6 shared RIR contact/maintainer handles |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (2)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 137.191.223.0/24 | National Cyber Security Centre | RIPE | LEGACY | ● low |
| 2a0c:9880::/32 | National Cyber Security Centre | RIPE | ALLOCATED-BY-RIR | ● low |
IPv6 ranges (1)
| CIDR |
|---|
| 2a0c:9880::/32 |
NIC Handles
DUMY-RIPE
DUMY-RIPE
MNT-NCSC-IE
ORG-NCSC3-RIPE
RIPE-NCC-HM-MNT
RIPE-NCC-LEGACY-MNT