Tom Klein
Cluster stats
| Netblocks | 4 |
| All fragments | 349 blocks across 148 clusters |
| Cluster ID | 193307088 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 8 shared RIR contact/maintainer handles |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (4)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 91.207.13.0/24 | Tom Klein | RIPE | ALLOCATED-ASSIGNED PA | ● low |
| 2a0e:fd45:2b10::/44 | Tom Klein | RIPE | ALLOCATED-BY-LIR | ● low |
| 2a13:9640::/29 | Tom Klein | RIPE | ALLOCATED-BY-RIR | ● low |
| 2a13:9640::/44 | Tom Klein | RIPE | ALLOCATED-BY-LIR | ● low |
Network trust
what's this?
RPKI hygiene: C
how networks compare →
50.0%
of checked blocks have valid RPKI ROA coverage
(2 of 4)
Possible discrepancies (2)
These blocks are registered to Tom Klein 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.
| 2a13:9640::/44 /44 | authorized for AS52112 — Gentlent GmbH |
| 91.207.13.0/24 /24 | authorized for AS52112 — Gentlent GmbH |
NIC Handles
ACRO42575-RIPE
DUMY-RIPE
DUMY-RIPE
ORG-TK151-RIPE
ORG-TKTA5-RIPE
RICK-MNT
RIPE-NCC-HM-MNT
TOMKLEINIT