Network4
network4
Data as of 2026-08-16
Registry
Cluster stats
| Netblocks | 6 · 1,024 IPv4 addresses |
| IPv6 | 2 prefixes (largest 2a0b:6583::/48) |
| Registered in | Finland (2) · Germany (1) · Spain (1) |
| Cluster ID | 223740785 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | Registry record |
| Shared handles | clustered on 8 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
4 weekly snapshots · JSON
6
0 netblocks since 2026-07-13
2026-07-13
peak 6
2026-08-16
IP Ranges (6)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 45.66.195.0/24 | Network4 | RIPE | ASSIGNED PA | ● low |
| 46.231.51.0/24 | network4 | RIPE | ASSIGNED PA | ● low |
| 185.145.231.0/24 | network4 | RIPE | ASSIGNED PA | ● low |
| 185.163.59.0/24 | Network4 | RIPE | ASSIGNED PA | ● low |
| 2a0b:6583::/48 | NETWORK4 | RIPE | ASSIGNED | ● low |
| 2a0c:1883::/48 | NETWORK4 | RIPE | ASSIGNED | ● low |
IPv6 ranges (2)
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: C
how networks compare →
50.0%
of checked blocks have valid RPKI ROA coverage
(3 of 6)
Possible discrepancies (3)
These blocks are registered to network4 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.
| 2a0b:6583::/48 /48 | authorized for AS204007 — Kleissner Investments s.r.o. |
| 2a0c:1883::/48 /48 | authorized for AS211594 — Kleissner Investments s.r.o. |
| 45.66.195.0/24 /24 | authorized for AS209325 — Line Carrier Oy |
NIC Handles
DUMY-RIPE
DUMY-RIPE
cz-kleissner-1-mnt
de-lohi-1-mnt
es-repsol-1-mnt
lir-cz-peernet-1-MNT
mnt-fi-linecarrier-1
mnt-fi-wisdomic-1