Network topology

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

AS4574

Currently announcedSnapshot awaiting refresh

NETDOOR - Internet Doorway, Inc. · NETDOOR

Last observed9/29/2026, 11:45:11Open ASN profile →

AS4574 relationship topology

Showing 4 / 4

AS4574Internet Doorway, Inc.

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS11272TELEPAK-NETWORKS-INC - C Spire Fiber

Relationship: Upstream
Observed weight: 496
ASN registration country: United States
Latest RIS data: 10/18/2026, 00:00:00

Open AS11272 profile →

All adjacent autonomous systems

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

4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS11272Observed weight 496	TELEPAK-NETWORKS-INC - C Spire Fiber	Upstream	United States	8/19/2019, 00:00:00	10/18/2026, 00:00:00	1,112
AS3356Observed weight 393	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/19/2019, 00:00:00	10/18/2026, 00:00:00	855
AS15155Observed weight 254	Southern Farm Bureau Life Insurance Company	Downstream	United States	8/19/2019, 00:00:00	10/18/2026, 00:00:00	337
AS55142Observed weight 209	Newbreak Management Co. LLC	Downstream	United States	8/19/2019, 00:00:00	10/18/2026, 00:00:00	284

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