CUST1
Data as of 2026-09-27
BGP inherited
This organisation
| Netblocks | 7 · 1,344 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a07:3e06::/32) |
| Registered in | France (5) · Czechia (1) |
| Also registered under this name | 8 netblocks across 2 separate records |
| Record ID | 245492357 |
| Registry | RIPE |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 5 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (7)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 5.253.132.0/24 | CUST1 | RIPE | ASSIGNED PA | ● low |
| 139.28.116.64/26 | CUST1 | RIPE | ASSIGNED PA | ● low |
| 185.19.224.0/24 | CUST1 | RIPE | ASSIGNED PA | ● low |
| 185.23.138.0/24 | CUST1 | RIPE | ASSIGNED PA | ● low |
| 185.148.252.0/24 | cust1 | RIPE | ASSIGNED PA | ● low |
| 185.243.16.0/24 | CUST1 | RIPE | ASSIGNED PA | ● low |
| 2a07:3e06::/32 | NET-CUST1 | RIPE | ALLOCATED-BY-LIR | ● low |
IPv6 ranges (1)
| CIDR |
|---|
| 2a07:3e06::/32 |
Footprint over time
14 weekly snapshots · JSON
7
0 netblocks since 2026-07-05
2026-07-05
peak 7
2026-09-27
Network trust
what's this?
RPKI hygiene: C
how networks compare →
71.4%
of checked blocks have valid RPKI ROA coverage
(5 of 7)
Possible discrepancies (3)
These blocks are registered to CUST1 but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 185.148.252.0/24 /24 | authorized for AS44821 — Koesio Nord Ouest SAS |
| 185.19.224.0/24 /24 | authorized for AS25540 — Alphalink SASU |
| 185.243.16.0/24 /24 | authorized for AS25540 — Alphalink SASU |
Routed via provider/NREN (1)
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.
| 2a07:3e06::/32 /32 | routed via AS559 — SWITCH (SWITCH) |
NIC Handles
DUMY-RIPE
DUMY-RIPE
MNT-CPRO
ch-heig-vd-1-mnt
mnt-cz-dobnet-1