Network topology

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

AS19663

Currently announcedSnapshot awaiting refresh

CASS INFORMATION SYSTEMS · CASS-STL

Last observed10/1/2026, 03:04:02Open ASN profile →

AS19663 relationship topology

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AS19663CASS INFORMATION SYSTEMS

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS22677CHARTER-22677-MO-IL-C3 - Charter Communications LLC

Relationship: Upstream
Observed weight: 164
ASN registration country: United States
Latest RIS data: 9/30/2026, 00:00:00

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All adjacent autonomous systems

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2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS22677Observed weight 164	CHARTER-22677-MO-IL-C3 - Charter Communications LLC	Upstream	United States	8/21/2019, 00:00:00	9/30/2026, 00:00:00	425	0
AS7018Observed weight 115	ATT-INTERNET4 - AT&T Enterprises, LLC	Upstream	United States	8/21/2019, 00:00:00	9/30/2026, 00:00:00	299	0

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