DONAU INFORMATIK s.r.o.
Data as of 2026-08-23
BGP inherited
Cluster stats
| Netblocks | 6 · 2,048 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a07:c380::/29) |
| Cluster ID | 227156257 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 9 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
7 weekly snapshots · JSON
6
0 netblocks since 2026-07-12
2026-07-12
peak 6
2026-08-23
IP Ranges (6)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 45.136.132.0/23 | DONAU INFORMATIK s.r.o. | BGP | ANNOUNCED | ● high |
| 45.136.135.0/24 | DONAU INFORMATIK s.r.o. | BGP | ANNOUNCED | ● high |
| 185.161.172.0/23 | DONAU INFORMATIK s.r.o. | BGP | ANNOUNCED | ● high |
| 91.244.226.0/24 | DONAU INFORMATIK s.r.o. | RIPE | ALLOCATED PA | ● low |
| 185.161.172.0/22 | DONAU INFORMATIK s.r.o. | RIPE | ALLOCATED PA | ● low |
| 2a07:c380::/29 | DONAU INFORMATIK s.r.o. | RIPE | ALLOCATED-BY-RIR | ● low |
IPv6 ranges (1)
| CIDR |
|---|
| 2a07:c380::/29 |
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 (1)
These blocks are registered to DONAU INFORMATIK s.r.o. 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.
| 45.136.132.0/23 /23 | authorized for AS51876 — COMCRAFT s. r. o. |
NIC Handles
AS61241
DUMY-RIPE
DUMY-RIPE
GTSSK-MNT
ORG-DIS50-RIPE
RIPE-NCC-HM-MNT
lir-sk-dit-1-MNT
lir-sk-dit-1-MNT
sk-lomnido-1-mnt