asn.dev

Observed topology

AS12213 CNSQ-AS12213 - Centersquare

Hosting ARIN Network Services

Upstreams 8 carry this network
Downstreams 37 this network carries
Adjacent (IPv4) 42
Adjacent (IPv6) 11
Upstream graph Who carries AS12213, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS12213 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS12213: 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
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,163
AS6461Zayo BandwidthTransitIPv4 IPv61,004
AS3257GTT Communications Inc.TransitIPv4 IPv6146
AS2686AT&T Enterprises, LLCUnclassifiedIPv4124
AS7018AT&T Enterprises, LLCResidentialIPv4 IPv6108
AS49915Megaport (UK) LimitedUnclassifiedIPv4 IPv662
AS6939Hurricane Electric LLCTransitIPv4 IPv635
AS25091IP-Max SAUnclassifiedIPv61

Transit

Downstream networks

All 37

Networks for which AS12213 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS26584VERTAFORE, INCUnclassifiedIPv4307
AS16910Farm Credit Financial Partners, Inc.UnclassifiedIPv4262
AS197594Redstor LimitedUnclassifiedIPv4240
AS398172Sirius XM Connected Vehicle Services Inc.UnclassifiedIPv4240
AS26842MFXCHANGE US, INCUnclassifiedIPv4219
AS396002TeleVoIPsUnclassifiedIPv4198
AS396163My Digital Shield, Inc.HostingIPv4189
AS15248Metaswitch Networks Corp.UnclassifiedIPv4 IPv6184
AS1379SINCH INTERCONNECT LLCUnclassifiedIPv4180
AS13690American Medical Response, Inc.UnclassifiedIPv4177

All 37 downstreams →

Adjacency

Adjacent networks

All 45

Every AS seen directly next to AS12213 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv62,946
AS6461Zayo BandwidthTransitIPv4 IPv62,530
AS7018AT&T Enterprises, LLCResidentialIPv4 IPv6369
AS26584VERTAFORE, INCUnclassifiedIPv4307
AS16910Farm Credit Financial Partners, Inc.UnclassifiedIPv4262
AS3257GTT Communications Inc.TransitIPv4 IPv6247
AS197594Redstor LimitedUnclassifiedIPv4240
AS398172Sirius XM Connected Vehicle Services Inc.UnclassifiedIPv4240
AS2686AT&T Enterprises, LLCUnclassifiedIPv4219
AS26842MFXCHANGE US, INCUnclassifiedIPv4219

All 45 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M 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.