de Groot Bastiaan
BGP inherited
Cluster stats
| Netblocks | 8 |
| Registered in | France (4) · Netherlands (2) |
| All fragments | 19 blocks across 6 clusters |
| Cluster ID | 209325570 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
8
+1 netblocks since 2026-07-05
2026-07-05
peak 8
2026-07-19
IP Ranges (8)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 51.75.166.224/30 | de Groot Bastiaan | RIPE | LEGACY | ● high |
| 51.89.34.164/30 | de Groot Bastiaan | RIPE | LEGACY | ● high |
| 51.195.54.76/30 | de Groot Bastiaan | RIPE | LEGACY | ● high |
| 54.37.192.180/30 | de Groot Bastiaan | RIPE | LEGACY | ● high |
| 81.18.241.112/29 | de_groot | RIPE | ASSIGNED PA | ● low |
| 217.100.178.152/30 | DE_GROOT_RODEN_BV | RIPE | ASSIGNED PA | ● low |
| 2001:41f0:6ff8::/48 | DE_GROOT_ZONWERING | RIPE | ASSIGNED | ● low |
| 2001:41f0:8b35::/48 | DE_GROOT_RODEN_BV | RIPE | ASSIGNED | ● low |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(8 of 8)
Possible discrepancies (2)
These blocks are registered to de Groot Bastiaan 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.
| 2001:41f0:8b35::/48 /48 | authorized for AS33915 — Vodafone Libertel B.V. |
| 2001:41f0:6ff8::/48 /48 | authorized for AS33915 — Vodafone Libertel B.V. |
NIC Handles
DUMY-RIPE
DUMY-RIPE
ORG-AD271-RIPE
ORG-DGB11-RIPE
OVH-MNT
ZIGGO-AUTOREG1
qore-mnt