CTA Systems B.V.
Data as of 2026-10-04
BGP inherited
This organisation
| Netblocks | 14 · 2,304 IPv4 addresses |
| IPv6 | 3 prefixes (largest 2a0c:3900::/29) |
| Record ID | 245738581 |
| Registry | BGP |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (14)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 85.8.131.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.80.8.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.80.9.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.80.10.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.80.11.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.231.16.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.231.17.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.231.18.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.231.19.0/24 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 2a0c:3900::/32 | CTA Systems B.V. | BGP | ANNOUNCED | ● high |
| 185.80.8.0/22 | CTA Systems B.V. | RIPE | ALLOCATED PA | ● low |
| 185.231.16.0/22 | CTA Systems B.V. | RIPE | ALLOCATED PA | ● low |
| 2a03:5f20::/32 | CTA Systems B.V. | RIPE | ALLOCATED-BY-RIR | ● low |
| 2a0c:3900::/29 | CTA Systems B.V. | RIPE | ALLOCATED-BY-RIR | ● low |
IPv6 ranges (3)
Footprint over time
15 weekly snapshots · JSON
15
-2 netblocks since 2026-07-05
2026-07-05
peak 17
2026-10-04
Network trust
what's this?
RPKI hygiene: B
how networks compare →
86.7%
of checked blocks have valid RPKI ROA coverage
(13 of 15)
No discrepancies found among checked blocks.
NIC Handles
AS39563
DUMY-RIPE
DUMY-RIPE
ORG-CSB11-RIPE
RIPE-NCC-HM-MNT
UCSYSTEMS-MNT
UCSYSTEMS-MNT