asn.dev

Observed topology

AS397423 TIER-NET - Tier.Net Technologies LLC

Hosting ARIN

Upstreams 15 carry this network
Downstreams 27 this network carries
Adjacent (IPv4) 40
Adjacent (IPv6) 26
Upstream graph Who carries AS397423, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS397423 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 15

Networks observed carrying traffic for AS397423: 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
AS174Cogent Communications, LLCTransitIPv4 IPv68,662
AS6461Zayo BandwidthTransitIPv4 IPv65,228
AS3356Level 3 Parent, LLCTransitIPv4 IPv64,405
AS6939Hurricane Electric LLCTransitIPv4 IPv61,568
AS40676Psychz NetworksHostingIPv4 IPv61,010
AS7029Windstream Communications LLCResidentialIPv4 IPv6283
AS137409GSL Networks Pty LTDUnclassifiedIPv4124
AS14907Wikimedia Foundation Inc.HostingIPv4 IPv6113
AS971PureVoltage Hosting Inc.UnclassifiedIPv4105
AS22652Videotron LteeResidentialIPv4 IPv683

All 15 upstreams →

Transit

Downstream networks

All 27

Networks for which AS397423 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS400031GigaPacket LLCUnclassifiedIPv41,536
AS399122VPS House Technology Group LLCUnclassifiedIPv4 IPv61,320
AS64245DigitalFyre Internet Solutions, LLC.UnclassifiedIPv4 IPv6764
AS400402Hosting Bot, LLCHostingIPv4 IPv6664
AS394760Sauce Servers LLCUnclassifiedIPv4 IPv6567
AS395898TND, LLCUnclassifiedIPv4 IPv6552
AS25846Cloudnium LLCUnclassifiedIPv4 IPv6528
AS402072OZONTI NETWORK LLCUnclassifiedIPv4 IPv6438
AS402931AdaptGroupUnclassifiedIPv4 IPv6272
AS996JY Mobile CommunicationsUnclassifiedIPv4240

All 27 downstreams →

Adjacency

Adjacent networks

All 42

Every AS seen directly next to AS397423 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv612,335
AS6461Zayo BandwidthTransitIPv4 IPv67,846
AS3356Level 3 Parent, LLCTransitIPv4 IPv65,000
AS6939Hurricane Electric LLCTransitIPv4 IPv63,853
AS400031GigaPacket LLCUnclassifiedIPv41,536
AS399122VPS House Technology Group LLCUnclassifiedIPv4 IPv61,320
AS40676Psychz NetworksHostingIPv4 IPv61,310
AS25846Cloudnium LLCUnclassifiedIPv4 IPv61,195
AS400402Hosting Bot, LLCHostingIPv4 IPv61,066
AS64245DigitalFyre Internet Solutions, LLC.UnclassifiedIPv4 IPv61,013

All 42 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.46M 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.