Network topology

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

AS23309

Currently announcedSnapshot awaiting refresh

Contra Costa County Office of Education · CCCOE-NET

Last observed10/1/2026, 12:17:13Open ASN profile →

AS23309 relationship topology

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AS23309Contra Costa County Off…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2152CENIC-2152 - CENIC

Relationship: Upstream
Observed weight: 480
ASN registration country: United States
Latest RIS data: 10/1/2026, 00:00:00

Open AS2152 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
AS2152Observed weight 480	CENIC-2152 - CENIC	Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	335	351

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