Network topology

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

AS102

Currently announcedSnapshot awaiting refresh

U.S. National Science Foundation · NSF-HQ-AS

Last observed9/29/2026, 05:51:38Open ASN profile →

AS102 relationship topology

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AS102U.S. National Science F…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS6223CENTURYLINK-MTIPS1-STN - CenturyLink Communications, LLC

Relationship: Upstream
Observed weight: 348
ASN registration country: United States
Latest RIS data: 11/2/2026, 00:00:00

Open AS6223 profile →

All adjacent autonomous systems

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1 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS6223Observed weight 348	CENTURYLINK-MTIPS1-STN - CenturyLink Communications, LLC	Upstream	United States	8/19/2019, 00:00:00	11/2/2026, 00:00:00	986	333

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