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KynexBGP

AS51155

Citylink Telecom

Poland (PL)

ASN Information

AS NumberAS51155
AS NameTBTELECOM
OrganizationTBTELECOM Citylink Telecom Sp. z o.o.
Also known asNot available
CountryPoland (PL)
RegistryRIPE NCC
ASN TypeCable/DSL/ISP
Last Seen
Announcement Count4
IPv4 Prefix Count3
IPv6 Prefix Count1
RPKI StatusValid ×3Unknown (could not be determined) ×1
IRR RecordsAvailable (7 route objects)
PeeringDBView on PeeringDB ↗
Websitehttp://www.citylink.pl/ ↗

AS Path to AS51155

  1. 35280—
  2. 3356LEVEL3 - Level 3 Parent, LLC
  3. 51155Origin

Most common path, seen 15× in RouteViews data, latest at amsix.ams (2026-10-18 03:25:16 UTC). Prepends collapsed.

Route Collectors (Visibility)

Sydney: 23 peer session(s) — route-views.sydney (23)São Paulo: 38 peer session(s) — ix-br2.gru (38)Johannesburg: 41 peer session(s) — route-views.napafrica (41)Singapore: 45 peer session(s) — route-views.sg (45)Amsterdam: 47 peer session(s) — amsix.ams (47)London: 62 peer session(s) — route-views.linx (62)Eugene, OR: 115 peer session(s) — route-views5 (39), route-views4 (30), route-views3 (27), route-views6 (19)
High (10+ peers)Medium (3–9)Low (1–2)

Approximate RouteViews collector locations, sized by peer sessions carrying this AS's routes.

Announced Prefixes (4)

View All →
PrefixFamilyRPKILast Seen
46.227.36.0/23IPv4ValidNot looked up yet
46.227.38.0/23IPv4ValidNot looked up yet
178.19.176.0/20IPv4ValidNot looked up yet
2a02:26e8::/32IPv6Not checkedNot looked up yet

Peers (25)

View All →
ASNameRelationshipPathsLast Seen
AS3356LEVEL3 - Level 3 Parent, LLCUpstream (inferred)424
AS6939HURRICANE - Hurricane Electric LLCUpstream (inferred)181
AS9002RETN-AS RETN LimitedUpstream (inferred)49
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTDUpstream (inferred)24
AS49544i3Dnet i3D.net B.VUpstream (inferred)12
AS50263IXP-1-IX-EU A-Systems Sp. z o.o.Upstream (inferred)11
AS24482SGGS-AS-AP - SG.GSUpstream (inferred)10
AS36236NETACTUATE - NetActuate, IncUpstream (inferred)4

Neighbours seen next to AS51155 in public AS paths. These are not confirmed BGP sessions; peer IP addresses and locations are not published by these sources.

IX Presence (4)

IX Updates →
ExchangeLocationIPv4IPv6SpeedRS peerUpdated
1-IX EUNew-York, London, Paris, Madrid, Frankfurt, Amsterdam, Warsaw, Bratislava, Hong Kong, PL185.0.42.1752001:7f8:115:1::17510GYes
EPIX.WarszawaWarsaw, PL89.46.145.1722001:678:3ac::60710GYes
Equinix WarsawWarsaw, PL195.182.218.1192001:7f8:42::a505:1155:110GYes
POM-IXGdańsk, PL185.0.16.66—10GYes

IX ports AS51155 has registered in PeeringDB (self-reported).

Upstreams (20)

ASNameRelationshipPathsLast Seen
AS3356LEVEL3 - Level 3 Parent, LLCUpstream (inferred)424
AS6939HURRICANE - Hurricane Electric LLCUpstream (inferred)181
AS9002RETN-AS RETN LimitedUpstream (inferred)49
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTDUpstream (inferred)24
AS49544i3Dnet i3D.net B.VUpstream (inferred)12
AS50263IXP-1-IX-EU A-Systems Sp. z o.o.Upstream (inferred)11
AS24482SGGS-AS-AP - SG.GSUpstream (inferred)10
AS36236NETACTUATE - NetActuate, IncUpstream (inferred)4
AS8218NEO-ASN Zayo Infrastructure France SAUpstream (inferred)3
AS24940HETZNER-AS Hetzner Online GmbHUpstream (inferred)3
AS34927iFog-GmbH iFog GmbHUpstream (inferred)3
AS6204ZET-NET INTERKVM HOST SRLUpstream (inferred)RIPEstat only—
AS9009M247 M247 Europe SRLUpstream (inferred)RIPEstat only—
AS13194BITE UAB "Bite Lietuva"Upstream (inferred)RIPEstat only—
AS29632NASSIST-AS Netassist International EOODUpstream (inferred)RIPEstat only—
AS35320ETT-AS Eurotranstelecom LtdUpstream (inferred)RIPEstat only—
AS42295TBISS-AS TBISS LtdUpstream (inferred)RIPEstat only—
AS50629LWLCOM LWLcom GmbHUpstream (inferred)RIPEstat only—
AS62000AS62000 SERVERD SASUpstream (inferred)RIPEstat only—
AS201054EPIX-PolMix Stowarzyszenie e-PoludnieUpstream (inferred)RIPEstat only—

Downstreams (4)

ASNameRelationshipPathsLast Seen
AS41865BIALLNET-AS BIALL-NET Sp. z o.o.Downstream (inferred)RIPEstat only—
AS51976JP-TELEKOM-AS JP-Telekom Sp z o.o.Downstream (inferred)RIPEstat only—
AS56408Airport_Gdansk-AS Gdansk Airport Sp. z o.o.Downstream (inferred)RIPEstat only—
AS206651Telemedian Telemedian Sp. z o.o.Downstream (inferred)RIPEstat only—

Registry and PeeringDB details

Holder (RIPEstat)TBTELECOM Citylink Telecom Sp. z o.o.
RegisteredYes
Peering policyOpen
IRR AS-setAS-TBTELECOM-EQUINIX
Registry record last modified
MaintainersRIPE-NCC-END-MNT, AS51155-MNT
Internet exchanges (PeeringDB)4
Facilities (PeeringDB)0
PeeringDB record updated

Data sources for this page

SourceFreshnessResultFetchedProvider observationError
RouteViews APILiveOKNot reportedNone
RIPEstat Data APILiveOKNot reportedNone
PeeringDBLiveOKNot reportedNone
RouteViews APILiveOKNone
RouteViews API (AS paths)LiveOKNone
RouteViews APILiveNo recordsNot reportedNone
RIPEstat Data API (AS names)CachedOKNot reportedNone
NLNOG IRRexplorerLiveOKNot reportedNone
PeeringDB (exchanges)CachedOKNot reportedNone

Page generated . See data sources and limitations.