Adjacent networks

AS15997 ITSA ITSA Autonomous System

Residential RIPE

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS15997 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS1299	Arelion Sweden AB	Transit	IPv4 IPv6	140
AS3491	PCCW Global (HK) Ltd.	Transit	IPv4	115
AS6939	Hurricane Electric LLC	Transit	IPv4 IPv6	89
AS174	Cogent Communications, LLC	Transit	IPv4 IPv6	87
AS47396	Mazowiecka Jednostka Wdrazania Programow Unijnych	Unclassified	IPv4	58
AS203707	DIGITAL UTILITIES SP Z O O	Unclassified	IPv4	58
AS209769	Simplifae Poland S.A.	Unclassified	IPv4	58
AS3356	Level 3 Parent, LLC	Transit	IPv4 IPv6	56
AS199887	Centrum Unijnych Projektow Transportowych	Unclassified	IPv4	54
AS198289	KPMG sp. z o.o.	Unclassified	IPv4	40
AS15038	The Cambridge Incubator, LLC	Unclassified	IPv4	39
AS12741	Netia SA	Residential	IPv4	30
AS24482	SG.GS	Hosting	IPv4 IPv6	9
AS51064	Glowny Inspektorat Transportu Drogowego	Unclassified	IPv4	9
AS198782	SERVICES ZONE S.A.	Unclassified	IPv4	5
AS33891	Core-Backbone GmbH	Hosting	IPv4	4
AS29632	Netassist International EOOD	Unclassified	IPv6	2
AS197671	GTECH POLSKA Sp. z o.o.	Unclassified	IPv4	1
AS198242	INVESTORS HOLDING SPOLKA AKCYJNA	Unclassified	IPv4	1
AS201054	Stowarzyszenie e-Poludnie	Unclassified	IPv6	1

Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Derived from routing tables collected at 2026-10-12 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.21M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.