asn.dev

Observed topology

AS1733 DISACENT-NIPR-ASN

Unclassified ARIN

Upstreams 1 carry this network
Downstreams 10 this network carries
Adjacent (IPv4) 11
Adjacent (IPv6) 2
Upstream graph Who carries AS1733, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS1733 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS1733: 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
AS27065United States Department of Defense (DoD)UnclassifiedIPv4 IPv6700

Transit

Downstream networks

inferred

Networks for which AS1733 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS6035United States Department of Defense (DoD)UnclassifiedIPv43,415
AS6034United States Department of Defense (DoD)UnclassifiedIPv4 IPv62,057
AS27046United States Department of Defense (DoD)UnclassifiedIPv4472
AS5877United States Department of Defense (DoD)UnclassifiedIPv4119
AS5237United States Department of Defense (DoD)UnclassifiedIPv4102
AS317United States Department of Defense (DoD)UnclassifiedIPv460
AS329United States Department of Defense (DoD)UnclassifiedIPv460
AS673Headquarters, USAISCUnclassifiedIPv460
AS670Headquarters, USAISCUnclassifiedIPv459
AS672Headquarters, USAISCUnclassifiedIPv459

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS1733 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS27065United States Department of Defense (DoD)UnclassifiedIPv4 IPv67,163
AS6035United States Department of Defense (DoD)UnclassifiedIPv43,415
AS6034United States Department of Defense (DoD)UnclassifiedIPv4 IPv62,057
AS27046United States Department of Defense (DoD)UnclassifiedIPv4472
AS5877United States Department of Defense (DoD)UnclassifiedIPv4119
AS5237United States Department of Defense (DoD)UnclassifiedIPv4102
AS317United States Department of Defense (DoD)UnclassifiedIPv460
AS329United States Department of Defense (DoD)UnclassifiedIPv460
AS673Headquarters, USAISCUnclassifiedIPv460
AS670Headquarters, USAISCUnclassifiedIPv459

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-22 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.12M 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.