asn.dev

Observed topology

AS4226 SUMOFIBER - Sumofiber

Residential ARIN

Upstreams 15 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 21
Adjacent (IPv6) 11
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 15

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
AS6461Zayo BandwidthTransitIPv4 IPv6579
AS1299Arelion Sweden ABTransitIPv4 IPv6552
AS6939Hurricane Electric LLCTransitIPv4 IPv6282
AS174Cogent Communications, LLCTransitIPv4 IPv6265
AS3257GTT Communications Inc.TransitIPv4 IPv6234
AS3491PCCW Global (HK) Ltd.TransitIPv4223
AS29968Dunkirk & Fredonia Telephone CompanyUnclassifiedIPv4130
AS2914NTT America, Inc.TransitIPv4 IPv666
AS33727SumofiberUnclassifiedIPv632
AS24482SG.GSHostingIPv4 IPv625

All 15 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 IPv6911
AS46601CCI Communications LLCUnclassifiedIPv4174
AS32541CCI Networks ServicesUnclassifiedIPv480
AS400179PDQ.com CorporationUnclassifiedIPv670
AS401579RyTel LLCUnclassifiedIPv459
AS401758DD BURR INVESTMENT COMPANY LLCUnclassifiedIPv458
AS399936PBXIO LLCUnclassifiedIPv430
AS401734LANtastic InternetUnclassifiedIPv430

Adjacency

Adjacent networks

All 23

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

ASNetworkTypeFamiliesPaths seen
AS397162SumofiberUnclassifiedIPv4 IPv61,023
AS6461Zayo BandwidthTransitIPv4 IPv61,018
AS1299Arelion Sweden ABTransitIPv4 IPv6933
AS6939Hurricane Electric LLCTransitIPv4 IPv6498
AS174Cogent Communications, LLCTransitIPv4 IPv6454
AS3257GTT Communications Inc.TransitIPv4 IPv6393
AS3491PCCW Global (HK) Ltd.TransitIPv4224
AS46601CCI Communications LLCUnclassifiedIPv4174
AS2914NTT America, Inc.TransitIPv4 IPv6153
AS29968Dunkirk & Fredonia Telephone CompanyUnclassifiedIPv4130

All 23 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.