Network topology

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

AS21945

Currently announcedSnapshot awaiting refresh

Harland Clarke Corp. · HARLANDCLARKE-AS

Last observed9/30/2026, 23:16:51Open ASN profile →

AS21945 relationship topology

Showing 2 / 2

AS21945Harland Clarke Corp.

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS62CONE - CyrusOne LLC

Relationship: Upstream
Observed weight: 378
ASN registration country: United States
Latest RIS data: 10/20/2026, 00:00:00

Open AS62 profile →

All adjacent autonomous systems

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

2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS62Observed weight 378	CONE - CyrusOne LLC	Upstream	United States	8/19/2019, 00:00:00	10/20/2026, 00:00:00	962	0
AS7018Observed weight 281	ATT-INTERNET4 - AT&T Enterprises, LLC	Upstream	United States	8/19/2019, 00:00:00	10/20/2026, 00:00:00	698	0

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