Skip to content
KYNEXBGP Toolkit
CTA Systems B.V. logo

AS39563

CTA Systems B.V.

Netherlands (NL)

ASN Information

AS NumberAS39563
AS NameUCSYSTEMS
OrganizationUCSYSTEMS CTA Systems B.V.
Also known asCTA Systems B.V.
CountryNetherlands (NL)
RegistryRIPE NCC
ASN TypeNSP
Last Seen
Announcement Count10
IPv4 Prefix Count9
IPv6 Prefix Count1
RPKI StatusValid ×9Unknown (could not be determined) ×1
IRR RecordsView IRR route objects
Websitehttps://ucsystems.nl ↗

AS Path to AS39563

  1. 58511ANYCAST-GLOBAL-BACKBONE - Anycast Global Backbone
  2. 39563Origin

Most common path, seen 20× in route collector data, latest at a collector in Eugene, OR (2026-10-21 11:18:46 UTC). Prepends collapsed.

Route Collectors (Visibility)

Sydney: 11 peer session(s)São Paulo: 17 peer session(s)Johannesburg: 19 peer session(s)Singapore: 23 peer session(s)Amsterdam: 26 peer session(s)London: 35 peer session(s)Eugene, OR: 57 peer session(s)
High (10+ peers)Medium (3–9)Low (1–2)

Approximate route collector locations, coloured by peer sessions carrying this AS's routes.

Announced Prefixes (10)

View All →
PrefixFamilyRPKILast Seen
85.8.131.0/24IPv4ValidNot looked up yet
185.80.8.0/24IPv4ValidNot looked up yet
185.80.9.0/24IPv4ValidNot looked up yet
185.80.10.0/24IPv4ValidNot looked up yet
185.80.11.0/24IPv4ValidNot looked up yet
185.231.16.0/24IPv4ValidNot looked up yet
185.231.17.0/24IPv4ValidNot looked up yet
185.231.18.0/24IPv4ValidNot looked up yet

Peers (68)

View All →
ASNameRelationshipPathsLast Seen
AS20562OPEN-PEERING-AS Broadband Hosting B.V.Upstream (inferred)228
AS24785JOINTTRANSIT-AS Broadband Hosting B.V.Upstream (inferred)132
AS43350NFORCE NForce Entertainment B.V.Upstream (inferred)111
AS35133ERANIUM Eranium B.V.Upstream (inferred)92
AS37468Angola Cables - Angola CablesUpstream (inferred)55
AS6939HURRICANE - Hurricane Electric LLCUpstream (inferred)31
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTDUpstream (inferred)30
AS7713telkomnet-as-ap - PT Telekomunikasi IndonesiaUpstream (inferred)20

Neighbours seen next to AS39563 in public AS paths. These are not confirmed BGP sessions; peer IP addresses and locations are not published by these sources.

Public Peering Exchange Points (13)

IX Updates →
ExchangeLocationIPv4IPv6SpeedRS peerUpdated
1-IX EUNew-York, London, Paris, Madrid, Frankfurt, Amsterdam, Warsaw, Bratislava, Hong Kong, PL185.0.43.522001:7f8:115:1::1:5210GYes
1-NL FREEAmsterdam, NL185.0.2.802001:7f8:16d::8010GYes
ERA-IX AmsterdamAmsterdam, NL185.1.240.1962001:7f8:12a::19610GYes
ERA-IX FrankfurtFrankfurt, DE185.0.27.862001:7f8:15e::8610GYes
FogIXPAvers, CH185.1.147.42001:7f8:ca:1:0:3:9563:110GYes
FogIXP AmsterdamAmsterdam, NL194.153.153.902001:7f8:16c:1:0:3:9563:110GYes
Frys-IXFryslân, NL185.1.161.182001:7f8:10f::9a8b:27310GYes
INTERIXAmsterdam, NL185.1.184.1392001:7f8:134::6f10GYes
LSIXAmsterdam, The Hague, Rotterdam, Naaldwijk, NL185.1.32.782001:7f8:8f::a503:9563:110GYes
NL-ixAmsterdam, Rotterdam, Brussels, Luxembourg, Frankfurt, Düsseldorf, Berlin, Dublin, London, Copenhagen, Paris, Marseille, NL193.239.116.132001:7f8:13::a503:9563:110GYes
NL-ixAmsterdam, Rotterdam, Brussels, Luxembourg, Frankfurt, Düsseldorf, Berlin, Dublin, London, Copenhagen, Paris, Marseille, NL193.239.116.82001:7f8:13::a503:9563:210GYes
PITER-IX FrankfurtFrankfurt, DE31.44.187.1072001:7f8:109::9a8b:110GYes
Speed-IXDronten, NL185.1.222.2322001:7f8:b7::a503:9563:110GYes
nineAmsterdam, Bordeaux, Frankfurt, Genève, Lille, London, Lyon, Marseille, Milano, Montpellier, Paris, Zurich, FR185.1.14.1172001:7f8:12e::3:9563:110GYes

IX ports registered by AS39563 (self-reported by the network).

Interconnection Facilities (7)

FacilityCityCountry
Eurofiber Datacenter Rotterdam 1AlblasserdamNetherlands
Digital Realty AMS17 - AmsterdamAmsterdamNetherlands
Equinix AM7 - Amsterdam, KuiperberwegAmsterdamNetherlands
NIKHEF AmsterdamAmsterdamNetherlands
Interconnect Services DC2 EindhovenEindhovenNetherlands
Greenhouse Datacenters DC1NaaldwijkNetherlands
Greenhouse Datacenters DC2NaaldwijkNetherlands

Data centres where AS39563 says it can interconnect (self-reported).

IRR AS-SET and Peering Policy

IRR AS-SETAS-UCSYSTEMS
Member of AS-SETsSee IRR page
Peering policyOpen
Multiple locationsNot Required
Ratio requirementNo
ContractNot Required
Traffic1-5Gbps
Traffic ratioMostly Inbound
Geographic scopeRegional
Max prefixes (IPv4 / IPv6)30 / 10
Unicast / IPv6 / MulticastYes / Yes / No
Looking glassNot available
Route serverNot available

Contact Information (3)

RoleNameEmailPhone
NOCNOCservice@ucsystems.nl+31886666333
PolicyPeeringpeering@ucsystems.nl+31886666333
AbuseAbuseabuse@ucsystems.nl+31886666333

Only contacts the network has chosen to publish are shown.

Upstreams (54)

View all →
ASNameRelationshipPathsLast Seen
AS20562OPEN-PEERING-AS Broadband Hosting B.V.Upstream (inferred)228
AS24785JOINTTRANSIT-AS Broadband Hosting B.V.Upstream (inferred)132
AS43350NFORCE NForce Entertainment B.V.Upstream (inferred)111
AS35133ERANIUM Eranium B.V.Upstream (inferred)92
AS37468Angola Cables - Angola CablesUpstream (inferred)55
AS6939HURRICANE - Hurricane Electric LLCUpstream (inferred)31
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTDUpstream (inferred)30
AS7713telkomnet-as-ap - PT Telekomunikasi IndonesiaUpstream (inferred)20
AS58511ANYCAST-GLOBAL-BACKBONE - Anycast Global BackboneUpstream (inferred)20
AS37100SEACOM Limited - SEACOM LimitedUpstream (inferred)15
AS49544i3Dnet i3D.net B.VUpstream (inferred)15
AS1031PEER1-1031 - PEER 1031 LLCUpstream (inferred)10

Downstreams (1)

ASNameRelationshipPathsLast Seen
AS35055—Downstream (inferred)Inferred—

Registry and network details

Registered holderUCSYSTEMS CTA Systems B.V.
RegisteredYes
Peering policyOpen
IRR AS-setAS-UCSYSTEMS
Registry record last modified
MaintainersRIPE-NCC-END-MNT, UCSYSTEMS-MNT
Internet exchanges13
Facilities7
Network profile updated

Data updated . See limitations.