Network topology

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

AS27405

Currently announcedSnapshot awaiting refresh

PSC - University System of New Hampshire · PSC

Last observed10/1/2026, 23:01:26Open ASN profile →

AS27405 relationship topology

Showing 5 / 5

AS27405University System of Ne…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS3257GTT-BACKBONE GTT Communications Inc.

Relationship: Upstream
Observed weight: 345
ASN registration country: Germany
Latest RIS data: 10/1/2026, 00:00:00

Open AS3257 profile →

All adjacent autonomous systems

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5 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS3257Observed weight 345	GTT-BACKBONE GTT Communications Inc.	Upstream	Germany	8/21/2019, 00:00:00	10/1/2026, 00:00:00	453
AS394961Observed weight 94	Network name pending collection	Downstream	Registration country pending sync	8/21/2019, 00:00:00	10/1/2026, 00:00:00	126
AS11745Observed weight 21	University System of New Hampshire	Upstream / Downstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	23
AS29917Observed weight 12	University System of New Hampshire	Downstream / Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	16
AS286Observed weight 3	KPN GTT Communications Inc.	Upstream	Germany	8/21/2019, 00:00:00	10/1/2026, 00:00:00	3

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