Network topology

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

AS70

Currently announcedSnapshot awaiting refresh

NLM-GW - National Library of Medicine · NLM-GW

Last observed11/2/2026, 20:34:47Open ASN profile →

AS70 relationship topology

Showing 3 / 3

AS70National Library of Med…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS19050U.S. Department of Health & Human Services

Relationship: Upstream
Observed weight: 495
ASN registration country: United States
Latest RIS data: 11/2/2026, 00:00:00

Open AS19050 profile →

All adjacent autonomous systems

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

3 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS19050Observed weight 495	U.S. Department of Health & Human Services	Upstream	United States	8/19/2019, 00:00:00	11/2/2026, 00:00:00	19,206	330
AS10886Observed weight 458	MAX-GIGAPOP - University of Maryland	Upstream	United States	8/19/2019, 00:00:00	11/2/2026, 00:00:00	1,283	332
AS393689Observed weight 1	Network name pending collection	Upstream	Registration country pending sync	8/19/2019, 00:00:00	11/2/2026, 00:00:00	0	1

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