Network topology

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

AS40127

Currently announcedSnapshot awaiting refresh

LMANET - Longwood Medical and Academic Area (LMA) · LMANET

Last observed10/3/2026, 08:20:28Open ASN profile →

AS40127 relationship topology

Showing 4 / 4

AS40127Longwood Medical and Ac…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS1742Harvard University

Relationship: Upstream
Observed weight: 1,486
ASN registration country: United States
Latest RIS data: 10/3/2026, 00:00:00

Open AS1742 profile →

All adjacent autonomous systems

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4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS1742Observed weight 1,486	Harvard University	Upstream	United States	8/23/2019, 00:00:00	10/3/2026, 00:00:00	4,023	668
AS40831Observed weight 522	Mass General Brigham Incorporated	Downstream	United States	8/23/2019, 00:00:00	10/3/2026, 00:00:00	1,674	0
AS33756Observed weight 343	CHC-ASN-A - The Children's Hospital Corporation	Downstream	United States	8/23/2019, 00:00:00	10/3/2026, 00:00:00	335	333
AS13572Observed weight 264	LAHEYCLINIC - Lahey Clinic, Inc.	Downstream	United States	8/23/2019, 00:00:00	10/3/2026, 00:00:00	1,678	0

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