Network topology

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

AS40639

Currently announcedSnapshot awaiting refresh

F Korbel & Bros Inc · KORBELINC

Last observed10/3/2026, 09:52:22Open ASN profile →

AS40639 relationship topology

Showing 3 / 3

AS40639F Korbel & Bros Inc

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: 10/3/2026, 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.

3 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	8/23/2019, 00:00:00	10/3/2026, 00:00:00	330
AS22667Observed weight 250	VISTA - Vista Broadband Networks, Inc.	Upstream	United States	8/23/2019, 00:00:00	10/3/2026, 00:00:00	357
AS33651Observed weight 16	CMCS - Comcast Cable Communications, LLC	Upstream	United States	8/23/2019, 00:00:00	10/3/2026, 00:00:00	20

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