Network topology

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

AS53309

Currently announcedSnapshot awaiting refresh

Black Hills Corporation · BLACKHILLSCORP

Last observed10/4/2026, 23:19:38Open ASN profile →

AS53309 relationship topology

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AS53309Black Hills Corporation

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS13576SDNW-13576 - SDN Communications

Relationship: Upstream
Observed weight: 316
ASN registration country: United States
Latest RIS data: 10/4/2026, 00:00:00

Open AS13576 profile →

All adjacent autonomous systems

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

1 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS13576Observed weight 316	SDNW-13576 - SDN Communications	Upstream	United States	8/25/2019, 00:00:00	10/4/2026, 00:00:00	760	0

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