Network topology

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

AS21937

Currently announcedSnapshot awaiting refresh

Estes Express Lines · EEL-LTL

Last observed10/1/2026, 08:36:17Open ASN profile →

AS21937 relationship topology

Showing 2 / 2

AS21937Estes Express Lines

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS13649ASN-FLEXENTIAL - Flexential Colorado Corp.

Relationship: Upstream
Observed weight: 283
ASN registration country: United States
Latest RIS data: 11/5/2026, 16:00:00

Open AS13649 profile →

All adjacent autonomous systems

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2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS13649Observed weight 283	ASN-FLEXENTIAL - Flexential Colorado Corp.	Upstream	United States	8/21/2019, 00:00:00	11/5/2026, 16:00:00	989	0
AS3356Observed weight 252	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/21/2019, 00:00:00	11/5/2026, 16:00:00	329	0

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