asn.dev

Observed topology

AS4226 SUMOFIBER

Residential ARIN

Upstreams 14 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 21
Adjacent (IPv6) 10
Upstream graph Who carries AS4226, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS4226 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 14

Networks observed carrying traffic for AS4226: 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
AS1299Arelion Sweden ABTransitIPv4 IPv6584
AS6461Zayo BandwidthTransitIPv4 IPv6521
AS6939Hurricane Electric LLCTransitIPv4 IPv6272
AS174Cogent Communications, LLCTransitIPv4 IPv6253
AS3491PCCW Global (HK) Ltd.TransitIPv4245
AS3257GTT Communications Inc.TransitIPv4215
AS29968Dunkirk & Fredonia Telephone CompanyUnclassifiedIPv4130
AS2914NTT America, Inc.TransitIPv4 IPv699
AS33727SumofiberUnclassifiedIPv633
AS24482SG.GSHostingIPv4 IPv625

All 14 upstreams →

Transit

Downstream networks

inferred

Networks for which AS4226 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS397162SumofiberUnclassifiedIPv4 IPv6880
AS46601CCI Communications LLCUnclassifiedIPv4171
AS400179PDQ.com CorporationUnclassifiedIPv4 IPv6130
AS32541CCI Networks ServicesUnclassifiedIPv477
AS401579RyTel LLCUnclassifiedIPv458
AS401758DD BURR INVESTMENT COMPANY LLCUnclassifiedIPv457
AS401734LANtastic InternetUnclassifiedIPv430
AS399936PBXIO LLCUnclassifiedIPv428

Adjacency

Adjacent networks

All 22

Every AS seen directly next to AS4226 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS397162SumofiberUnclassifiedIPv4 IPv6992
AS1299Arelion Sweden ABTransitIPv4 IPv6956
AS6461Zayo BandwidthTransitIPv4 IPv6950
AS6939Hurricane Electric LLCTransitIPv4 IPv6516
AS174Cogent Communications, LLCTransitIPv4 IPv6451
AS3257GTT Communications Inc.TransitIPv4374
AS3491PCCW Global (HK) Ltd.TransitIPv4246
AS2914NTT America, Inc.TransitIPv4 IPv6187
AS46601CCI Communications LLCUnclassifiedIPv4171
AS29968Dunkirk & Fredonia Telephone CompanyUnclassifiedIPv4130

All 22 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-21 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.