Observed topology

AS9021 ISNET

Unclassified RIPE

Upstreams 3 carry this network

Downstreams 7 this network carries

Adjacent (IPv4) 10

Adjacent (IPv6) 1

Upstream graph Who carries AS9021, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS9021 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS9021: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

AS	Network	Type	Families	Paths seen
AS9121	Turk Telekomunikasyon Anonim Sirketi	Mobile	IPv4 IPv6	7,817
AS32787	Akamai Technologies, Inc.	Hosting	IPv4	840
AS34984	Superonline Iletisim Hizmetleri A.S.	Mobile	IPv4	377

Transit

Downstream networks

inferred

Networks for which AS9021 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS7155	ViaSat,Inc.	Residential	IPv4	352
AS51321	PUSULA YATIRIM MENKUL DEGERLER A.S.	Unclassified	IPv4	236
AS34996	Anadolu Anonim Turk Sigorta Sirketi	Unclassified	IPv4	117
AS49027	Turkiye Sinai Kalkinma Bankasi Anonim Sirketi	Unclassified	IPv4	59
AS51739	Is Yatirim Menkul Degerler A.S.	Unclassified	IPv4	59
AS60056	YATIRIM FINANSMAN MENKUL DEGERLER ANONIM SIRKETI	Unclassified	IPv4	59
AS28781	PAYTEN TEKNOLOJI ANONIM SIRKETI	Unclassified	IPv4	50

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS9021 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS9121	Turk Telekomunikasyon Anonim Sirketi	Mobile	IPv4 IPv6	8,721
AS32787	Akamai Technologies, Inc.	Hosting	IPv4	840
AS34984	Superonline Iletisim Hizmetleri A.S.	Mobile	IPv4	405
AS7155	ViaSat,Inc.	Residential	IPv4	352
AS51321	PUSULA YATIRIM MENKUL DEGERLER A.S.	Unclassified	IPv4	236
AS34996	Anadolu Anonim Turk Sigorta Sirketi	Unclassified	IPv4	117
AS49027	Turkiye Sinai Kalkinma Bankasi Anonim Sirketi	Unclassified	IPv4	59
AS51739	Is Yatirim Menkul Degerler A.S.	Unclassified	IPv4	59
AS60056	YATIRIM FINANSMAN MENKUL DEGERLER ANONIM SIRKETI	Unclassified	IPv4	59
AS28781	PAYTEN TEKNOLOJI ANONIM SIRKETI	Unclassified	IPv4	50

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-23 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.15M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. 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.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.