Network topology

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

AS31977

Currently announcedSnapshot awaiting refresh

Florida East Coast Railway LLC · FECRWY-1

Last observed10/2/2026, 10:48:50Open ASN profile →

AS31977 relationship topology

Showing 2 / 2

AS31977Florida East Coast Rail…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS3549Level 3 Parent, LLC

Relationship: Upstream
Observed weight: 225
ASN registration country: United States
Latest RIS data: 11/11/2026, 00:00:00

Open AS3549 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
AS3549Observed weight 225	Level 3 Parent, LLC	Upstream	United States	8/21/2019, 00:00:00	11/11/2026, 00:00:00	1,176	0
AS33489Observed weight 32	COMCAST-33489 - Comcast Cable Communications, LLC	Upstream	United States	8/21/2019, 00:00:00	11/11/2026, 00:00:00	140	0

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