CTA Systems B.V.
AS39563 is CTA Systems B.V. (ucsystems.nl). It announces 2,304 IPv4 addresses in 9 prefixes, and 1 IPv6 prefixes.
The Netherlands· RIPE· allocated 2017-11-10· isp
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- The Netherlands2,302 · 99.91%
- Italy2 · 0.09%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UCSYSTEMS
- name
- CTA Systems B.V.
- org
- ORG-CSB11-RIPE
- org name
- CTA Systems B.V.
- org address
- Kade 64, 3371 EP, Hardinxveld-Giessendam, NETHERLANDS
- org country
- NL
- country
- NL
- source
- ripe
- status
- ASSIGNED
- created
- 2017-11-10
- updated
- 2021-06-25
- maintainer
- RIPE-NCC-END-MNT|UCSYSTEMS-MNT
- abuse name
- Abuse-C Role
- abuse email
- abuse@ucsystems.nl
- abuse kind
- role
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP64watchguard2.78%
- ipweb0.04%
- None here
- None here
- None here
- None here
- Hosting IP2,304100.00%
- None here
- None here
- None here
- 0.09%
- 0.04%
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 85.8.131.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.80.8.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.80.9.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.80.10.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.80.11.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.231.16.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.231.17.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.231.18.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
| 185.231.19.0/24 | The Netherlands | valid | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2a0c:3900::/32 | The Netherlands | valid | 20 | 2026-10-02 |
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