Observed topology

AS51955 NIC-LV-ANYCAST-AS Institute of Mathematics and Computer Science of University of Latvia

Unclassified RIPE

Upstreams 6 carry this network

Downstreams 0 this network carries

Adjacent (IPv4) 5

Adjacent (IPv6) 5

Upstream graph Who carries AS51955, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS51955 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS51955: 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
AS5538	Institute of Mathematics and Computer Science of University of Latvia	Education	IPv6	175
AS8194	VAS "Latvijas Valsts radio un televizijas centrs"	Unclassified	IPv4 IPv6	153
AS22548	Nucleo de Inf. e Coord. do Ponto BR - NIC.BR	Unclassified	IPv4 IPv6	114
AS29067	LLC "Hostmaster"	Hosting	IPv4 IPv6	112
AS20910	SIA "BITE Latvija"	Residential	IPv4 IPv6	95
AS5518	SIA Tet	Residential	IPv4	21

Transit

Downstream networks

inferred

Networks for which AS51955 was observed as the last hop before the origin, meaning it appears to provide them transit.

No downstream observed. This network does not appear to carry transit for anyone.

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS51955 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS5538	Institute of Mathematics and Computer Science of University of Latvia	Education	IPv6	175
AS8194	VAS "Latvijas Valsts radio un televizijas centrs"	Unclassified	IPv4 IPv6	153
AS22548	Nucleo de Inf. e Coord. do Ponto BR - NIC.BR	Unclassified	IPv4 IPv6	114
AS29067	LLC "Hostmaster"	Hosting	IPv4 IPv6	112
AS20910	SIA "BITE Latvija"	Residential	IPv4 IPv6	95
AS5518	SIA Tet	Residential	IPv4	21

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-04 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.33M 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.