Network topology

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

AS11901

Currently announcedSnapshot awaiting refresh

COSWAN - County of Sacramento · COSWAN

Last observed9/30/2026, 05:46:13Open ASN profile →

AS11901 relationship topology

Showing 4 / 4

AS11901County of Sacramento

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS6461ZAYO-6461 - Zayo Bandwidth

Relationship: Upstream
Observed weight: 548
ASN registration country: United States
Latest RIS data: 9/29/2026, 00:00:00

Open AS6461 profile →

All adjacent autonomous systems

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

4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS6461Observed weight 548	ZAYO-6461 - Zayo Bandwidth	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	894
AS23281Observed weight 290	CITY-OF-SACRAMENTO - City of Sacramento	Downstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	557
AS3356Observed weight 248	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	322
AS7018Observed weight 12	ATT-INTERNET4 - AT&T Enterprises, LLC	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	12

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