Country
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ASN LANDING PAGE
AS39563
UCSYSTEMS CTA Systems B.V.
Last updated · Jul 20, 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 reports 10 prefixes and 41 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
UCSYSTEMS CTA Systems B.V. is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS39563 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
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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AS35133
AS35133
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AS20562
AS20562
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AS6939
AS6939
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AS24785
AS24785
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AS50263
AS50263
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AS50869
AS50869
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AS28685
AS28685
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AS5405
AS5405
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AS33891
AS33891
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AS50304
AS50304
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AS2027
AS2027
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AS6204
AS6204
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AS8218
AS8218
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AS8298
AS8298
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AS8529
AS8529
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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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AS20764
AS20764
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AS22356
AS22356
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AS24961
AS24961
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AS25091
AS25091
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AS29632
AS29632
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AS30886
AS30886
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AS34019
AS34019
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AS34927
AS34927
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AS35600
AS35600
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AS37468
AS37468
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AS39351
AS39351
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AS41051
AS41051
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AS41327
AS41327
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AS41666
AS41666
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AS44097
AS44097
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AS49434
AS49434
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AS60326
AS60326
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AS205112
AS205112
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AS209022
AS209022
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AS215596
AS215596
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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
Frequently asked questions about this ASN page
What does AS39563 represent?
AS39563 is an autonomous system number. The current source associates it with UCSYSTEMS CTA Systems B.V. and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
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?
Open a concrete IP page to check how the address maps into AS39563, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
Related topics
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Routing Troubleshooting and Network Analysis
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Cloud Network and ASN Comparison
Compare representative cloud and edge networks by ASN, announced prefixes, peers, upstreams, and downstreams without inferring a specific host or customer workload.