Network topology

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

AS27138

Currently announcedSnapshot awaiting refresh

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

Last observed10/1/2026, 22:34:12Open ASN profile →

AS27138 relationship topology

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AS27138United States Departmen…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS27064DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)

Relationship: Upstream
Observed weight: 533
ASN registration country: United States
Latest RIS data: 10/1/2026, 00:00:00

Open AS27064 profile →

All adjacent autonomous systems

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4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS27064Observed weight 533	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	47,024
AS27137Observed weight 521	United States Department of Defense (DoD)	Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	8,854
AS3474Observed weight 252	United States Department of Defense (DoD)	Downstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	1,974
AS3472Observed weight 250	United States Department of Defense (DoD)	Downstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	327

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