Network topology

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

AS1640

Currently announcedSnapshot awaiting refresh

TGTEL - Thacker-Grigsby Communications · TGTEL

Last observed9/29/2026, 08:09:58Open ASN profile →

AS1640 relationship topology

Showing 4 / 4

AS1640Thacker-Grigsby Communi…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS6939HURRICANE - Hurricane Electric LLC

Relationship: Upstream
Observed weight: 232
ASN registration country: United States
Latest RIS data: 9/29/2026, 00:00:00

Open AS6939 profile →

All adjacent autonomous systems

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4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS6939Observed weight 232	HURRICANE - Hurricane Electric LLC	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	5,324
AS6461Observed weight 55	Zayo Bandwidth	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	1,221
AS25645Observed weight 16	MOMENTUM-ACCESS - Momentum Telecom, Inc.	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	357
AS7018Observed weight 3	ATT-INTERNET4 - AT&T Enterprises, LLC	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	9

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