Network topology

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

AS1742

Currently announcedSnapshot awaiting refresh

Harvard University · HARVARD-UNIV

Last observed9/29/2026, 08:12:28Open ASN profile →

AS1742 relationship topology

Showing 6 / 6

AS1742Harvard University

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS40127LMANET - Longwood Medical and Academic Area (LMA)

Relationship: Downstream
Observed weight: 1,492
ASN registration country: United States
Latest RIS data: 9/29/2026, 00:00:00

Open AS40127 profile →

All adjacent autonomous systems

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6 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS40127Observed weight 1,492	LMANET - Longwood Medical and Academic Area (LMA)	Downstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	4,047	676
AS3356Observed weight 1,107	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	4,013	903
AS174Observed weight 969	Cogent Communications, LLC	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	3,572	674
AS13315Observed weight 263	Harvard Business School	Downstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	1,013	0
AS11164Observed weight 260	INTERNET2-I2PX - Internet2	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	875	300
AS11537Observed weight 56	INTERNET2-RESEARCH-EDU - Internet2	Upstream	United States	8/19/2019, 00:00:00	9/29/2026, 00:00:00	213	34

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