Network topology

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

AS4900

Currently announcedSnapshot awaiting refresh

Montgomery County Hospital District · ASN1

Last observed11/1/2026, 09:20:30Open ASN profile →

AS4900 relationship topology

Showing 4 / 4

AS4900Montgomery County Hospi…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS7018ATT-INTERNET4 - AT&T Enterprises, LLC

Relationship: Upstream
Observed weight: 258
ASN registration country: United States
Latest RIS data: 11/1/2026, 00:00:00

Open AS7018 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
AS7018Observed weight 258	ATT-INTERNET4 - AT&T Enterprises, LLC	Upstream	United States	8/19/2019, 00:00:00	11/1/2026, 00:00:00	328
AS6300Observed weight 232	CCI-TEXAS - Fidium	Upstream	United States	8/19/2019, 00:00:00	11/1/2026, 00:00:00	306
AS35847Observed weight 25	AS-EFTL - Ezee Fiber	Upstream	United States	8/19/2019, 00:00:00	11/1/2026, 00:00:00	27
AS394437Observed weight 196	PS Lightwave	Upstream	United States	8/19/2019, 00:00:00	10/11/2026, 00:00:00	245

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