Country
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ASN LANDING PAGE
AS39563
UCSYSTEMS - CTA Systems B.V.
Last updated · Apr 4, 2026
Total prefixes
10
IPv4 prefixes
9
IPv6 prefixes
1
ASN summary
How to read the scale of AS39563
UCSYSTEMS - CTA Systems B.V. currently shows 10 prefixes and 41 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS39563?
UCSYSTEMS - CTA Systems B.V. is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS39563 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS39563 ASN lookupAS39563 BGPAS39563 peersAS39563 prefixesAS39563 upstreamsUCSYSTEMS - CTA Systems B.V. ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS43350
AS43350
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AS20562
AS20562
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AS6939
AS6939
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AS35133
AS35133
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AS24785
AS24785
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AS50263
AS50263
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AS28685
AS28685
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AS3214
AS3214
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AS8218
AS8218
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AS8298
AS8298
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AS39351
AS39351
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AS50869
AS50869
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AS20764
AS20764
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AS29632
AS29632
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AS34019
AS34019
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AS50304
AS50304
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AS924
AS924
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AS2027
AS2027
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AS3399
AS3399
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AS5405
AS5405
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AS6204
AS6204
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AS6424
AS6424
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AS8283
AS8283
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AS8529
AS8529
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AS12859
AS12859
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AS14840
AS14840
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AS14907
AS14907
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AS16347
AS16347
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AS20485
AS20485
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AS22356
AS22356
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AS24961
AS24961
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AS25091
AS25091
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AS30886
AS30886
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AS33891
AS33891
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AS34927
AS34927
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AS35360
AS35360
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AS35600
AS35600
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AS37100
AS37100
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AS37468
AS37468
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AS41327
AS41327
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 185.231.16.0/24 | AS39563 | — |
| 185.231.17.0/24 | AS39563 | — |
| 185.231.18.0/24 | AS39563 | — |
| 185.231.19.0/24 | AS39563 | — |
| 185.80.10.0/24 | AS39563 | — |
| 185.80.11.0/24 | AS39563 | — |
| 185.80.8.0/24 | AS39563 | — |
| 185.80.9.0/24 | AS39563 | — |
| 2a0c:3900::/32 | AS39563 | — |
| 85.8.131.0/24 | AS39563 | — |
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Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
Continue from this ASN into route troubleshooting and network analysis.
Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS39563 represent?
AS39563 is an autonomous system number used to identify an independently operated network. The current page associates it with UCSYSTEMS - CTA Systems B.V. in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
What are peers, upstreams, and prefixes useful for on the AS39563 page?
They help explain the scale, interconnection depth, and route structure of AS39563. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS39563?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS39563, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.