Network topology

Relationships come from RIS AS_PATH observations; direction represents path position, not a commercial contract or traffic direction.

AS27137

Currently announcedSnapshot awaiting refresh

United States Department of Defense (DoD) · DNIC-ASBLK-27032-27159

Last observed10/1/2026, 22:34:09Open ASN profile →

AS27137 relationship topology

Showing 2 / 2

AS27137United States Departmen…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS27066DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)

Relationship: Upstream
Observed weight: 781
ASN registration country: United States
Latest RIS data: 10/1/2026, 00:00:00

Open AS27066 profile →

All adjacent autonomous systems

The table preserves every relationship in the selected filter; graph limits and pagination never remove data.

2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS27066Observed weight 781	DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)	Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	9,510	0
AS27138Observed weight 521	DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)	Downstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	8,854	0

CHA.LA ASN relationship snapshotRelationships are normalized by CHA.LA from collected routing observations and registration context.CHA.LA routing observations · registration context