asn.dev

Observed topology

AS27064 DNIC-ASBLK-27032-27159

Unclassified ARIN

Upstreams 1 carry this network
Downstreams 76 this network carries
Adjacent (IPv4) 79
Adjacent (IPv6) 16
Upstream graph Who carries AS27064, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS27064 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS27064: 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
AS721United States Department of Defense (DoD)UnclassifiedIPv4 IPv656,962

Transit

Downstream networks

All 76

Networks for which AS27064 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS1540Headquarters, USAISCUnclassifiedIPv4 IPv687,083
AS5972United States Department of Defense (DoD)UnclassifiedIPv474,405
AS5852United States Department of Defense (DoD)UnclassifiedIPv4 IPv654,889
AS56United States Department of Defense (DoD)UnclassifiedIPv453,006
AS27046United States Department of Defense (DoD)UnclassifiedIPv4 IPv630,153
AS637United States Department of Defense (DoD)UnclassifiedIPv424,879
AS367United States Department of Defense (DoD)UnclassifiedIPv4 IPv617,149
AS5371United States Department of Defense (DoD)UnclassifiedIPv415,182
AS1602Headquarters, USAISCUnclassifiedIPv4 IPv68,260
AS27138United States Department of Defense (DoD)UnclassifiedIPv48,033

All 76 downstreams →

Adjacency

Adjacent networks

All 80

Every AS seen directly next to AS27064 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS721United States Department of Defense (DoD)UnclassifiedIPv4 IPv6605,158
AS1540Headquarters, USAISCUnclassifiedIPv4 IPv6173,004
AS5972United States Department of Defense (DoD)UnclassifiedIPv474,405
AS5852United States Department of Defense (DoD)UnclassifiedIPv4 IPv655,159
AS56United States Department of Defense (DoD)UnclassifiedIPv453,006
AS367United States Department of Defense (DoD)UnclassifiedIPv4 IPv633,640
AS27046United States Department of Defense (DoD)UnclassifiedIPv4 IPv630,153
AS745Air Force Systems NetworkingUnclassifiedIPv427,457
AS637United States Department of Defense (DoD)UnclassifiedIPv424,879
AS5371United States Department of Defense (DoD)UnclassifiedIPv415,182

All 80 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.