Network topology

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

AS20137

Currently announcedSnapshot awaiting refresh

USAGM · USAGM-LAN

Last observed10/25/2026, 09:35:21Open ASN profile →

AS20137 relationship topology

Showing 3 / 3

AS20137USAGM

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS7018ATT-INTERNET4 - AT&T Enterprises, LLC

Relationship: Upstream
Observed weight: 250
ASN registration country: United States
Latest RIS data: 10/25/2026, 00:00:00

Open AS7018 profile →

All adjacent autonomous systems

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

3 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS7018Observed weight 250	ATT-INTERNET4 - AT&T Enterprises, LLC	Upstream	United States	8/21/2019, 00:00:00	10/25/2026, 00:00:00	548
AS33657Observed weight 229	CMCS - Comcast Cable Communications, LLC	Upstream	United States	8/21/2019, 00:00:00	10/25/2026, 00:00:00	559
AS3356Observed weight 220	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/21/2019, 00:00:00	10/25/2026, 00:00:00	540

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