$ query “AS39563” --type=asn → 1 result(s)
AS39563 — UCSYSTEMS
CTA Systems B.V.
AS39563 is a hosting access provider operated by CTA Systems B.V., registered in the Netherlands since 2017. The network announces 2 304 IPv4 addresses. Supports IPv6.
Basic Information
- Country
- 🇳🇱 Netherlands
- Category
- Hosting
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- November 10, 2017
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 9 / 3
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 2 304
- Largest IPv4 Prefix
- /22 (1 024 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇳🇱 NL (5 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 2 304 total (0.00%)
Connectivity Summary
- Upstream Providers
- 3 upstream autonomous systems providing transit
- Peers
- 101 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 1 downstream autonomous systems buying transit
- Degree
- 107 unique BGP neighbors (providers + customers + peers)
- Reach
- 1 — customer cone size measuring network influence
- Degree Rank
- #1 401
- Reach Rank
- #9 235
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (9 total)
- 185.80.8.0/22 (1 024 addresses)
- 185.231.16.0/22 (1 024 addresses)
- 85.8.131.0/24 (256 addresses)
IPv6 Prefixes (1 total)
- 2a0c:3900::/32