asn.dev

Observed topology

AS13536 TVC-AS1 - FirstLight Fiber, Inc.

Residential ARIN NSP

Upstreams 11 carry this network
Downstreams 181 this network carries
Adjacent (IPv4) 191
Adjacent (IPv6) 38
Upstream graph Who carries AS13536, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS13536 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 11

Networks observed carrying traffic for AS13536: 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.

ASNetworkTypeFamiliesPaths seen
AS3770FirstLight Fiber, Inc.HostingIPv4 IPv64,281
AS1299Arelion Sweden ABTransitIPv4 IPv61,704
AS174Cogent Communications, LLCTransitIPv4 IPv6769
AS3257GTT Communications Inc.TransitIPv4 IPv6668
AS9002RETN LimitedUnclassifiedIPv4 IPv6122
AS24482SG.GSHostingIPv4 IPv697
AS6939Hurricane Electric LLCTransitIPv469
AS3303Swisscom (Schweiz) AGResidentialIPv457
AS293ESnetUnclassifiedIPv48
AS13030Init7 (Switzerland) Ltd.HostingIPv63

All 11 upstreams →

Transit

Downstream networks

All 181

Networks for which AS13536 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS21547FirstLight Fiber, Inc.UnclassifiedIPv4 IPv63,793
AS14477FirstLight Fiber, Inc.UnclassifiedIPv4 IPv63,203
AS397733New York State Education DepartmentUnclassifiedIPv42,781
AS32508Granite State CommunicationsUnclassifiedIPv41,674
AS40898Otsego Electric Cooperative, Inc.UnclassifiedIPv41,413
AS26385The University of Vermont Medical Center IncUnclassifiedIPv41,120
AS14877FirstLight Fiber, Inc.UnclassifiedIPv4 IPv6982
AS29968Dunkirk & Fredonia Telephone CompanyUnclassifiedIPv4927
AS27382FirstLight Fiber, Inc.HostingIPv4792
AS33422New England Telehealth ConsortiumUnclassifiedIPv4756

All 181 downstreams →

Adjacency

Adjacent networks

All 193

Every AS seen directly next to AS13536 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3770FirstLight Fiber, Inc.HostingIPv4 IPv623,539
AS1299Arelion Sweden ABTransitIPv4 IPv613,072
AS3257GTT Communications Inc.TransitIPv4 IPv65,377
AS174Cogent Communications, LLCTransitIPv4 IPv64,287
AS21547FirstLight Fiber, Inc.UnclassifiedIPv4 IPv64,080
AS14477FirstLight Fiber, Inc.UnclassifiedIPv4 IPv64,031
AS397733New York State Education DepartmentUnclassifiedIPv42,781
AS14877FirstLight Fiber, Inc.UnclassifiedIPv4 IPv62,636
AS6939Hurricane Electric LLCTransitIPv4 IPv61,783
AS32508Granite State CommunicationsUnclassifiedIPv41,674

All 193 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.