thomas
THOMAS-NET
Data as of 2026-07-26
Registry
Cluster stats
| Netblocks | 7 · 292 IPv4 addresses |
| IPv6 | 1 prefix (largest 2001:610:1b8::/48) |
| Registered in | United Kingdom (3) · Spain (1) · MU (1) · Netherlands (1) |
| All fragments | 8 blocks across 2 clusters |
| Cluster ID | 213428188 |
| Registry | AFRINIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | Registry record |
| Shared handles | clustered on 9 shared RIR contact/maintainer handles |
| Registry names | 5 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
3 weekly snapshots · JSON
7
0 netblocks since 2026-07-13
2026-07-13
peak 7
2026-07-26
IP Ranges (7)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 41.191.227.228/30 | thomas | AFRINIC | ASSIGNED PA | ● low |
| 81.143.70.216/29 | thomas | RIPE | ASSIGNED PA | ● low |
| 81.143.165.200/29 | THOMAS | RIPE | ASSIGNED PA | ● low |
| 195.169.102.0/24 | THOMAS-NET | RIPE | ASSIGNED PA | ● low |
| 212.170.252.56/29 | Thomas | RIPE | ASSIGNED PA | ● low |
| 217.46.251.32/29 | THOMAS | RIPE | ASSIGNED PA | ● low |
| 2001:610:1b8::/48 | THOMAS-NET | RIPE | ALLOCATED-BY-LIR | ● low |
IPv6 ranges (1)
| CIDR |
|---|
| 2001:610:1b8::/48 |
Network trust
what's this?
RPKI hygiene: B
how networks compare →
85.7%
of checked blocks have valid RPKI ROA coverage
(6 of 7)
No discrepancies found among checked blocks.
Routed via provider/NREN (2)
These blocks are cryptographically authorized for this organisation's national research & education network or transit provider — expected topology for an institution that routes through it, not a discrepancy.
| 2001:610:1b8::/48 /48 | routed via AS1103 — SURF (SURF B.V.) |
| 195.169.102.0/24 /24 | routed via AS1103 — SURF (SURF B.V.) |
NIC Handles
AA110-AFRINIC
AA110-AFRINIC
BTNET-MNT
DUMY-RIPE
DUMY-RIPE
LIQUID-TOL-MNT
MAINT-AS3352
SN-LIR-MNT
SURF-AUTO-MNT