Network topology

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

AS33428

Currently announcedSnapshot awaiting refresh

The New-York Historical Society · NHS-39AS

Last observed10/2/2026, 15:33:35Open ASN profile →

AS33428 relationship topology

Showing 2 / 2

AS33428The New-York Historical…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS12271TWC-12271-NYC - Charter Communications Inc

Relationship: Upstream
Observed weight: 137
ASN registration country: United States
Latest RIS data: 10/15/2026, 00:00:00

Open AS12271 profile →

All adjacent autonomous systems

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2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS12271Observed weight 137	TWC-12271-NYC - Charter Communications Inc	Upstream	United States	8/21/2019, 00:00:00	10/15/2026, 00:00:00	189	0
AS3356Observed weight 133	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/21/2019, 00:00:00	10/15/2026, 00:00:00	173	0

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