Network topology

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

AS21806

Currently announcedSnapshot awaiting refresh

National Fuel Gas Distribution Corporation · NATIONAL-FUEL

Last observed10/1/2026, 08:16:36Open ASN profile →

AS21806 relationship topology

Showing 2 / 2

AS21806National Fuel Gas Distr…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS46887CROWNCASTLE-AS46887 - Crown Castle Fiber LLC

Relationship: Upstream
Observed weight: 269
ASN registration country: United States
Latest RIS data: 10/1/2026, 00:00:00

Open AS46887 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
AS46887Observed weight 269	CROWNCASTLE-AS46887 - Crown Castle Fiber LLC	Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	536	0
AS11351Observed weight 259	TWC-11351-NORTHEAST - Charter Communications Inc	Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	518	0

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