Network topology

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

AS19739

Currently announcedSnapshot awaiting refresh

COUNTY-SANBERNARDINO - County of San Bernardino · COUNTY-SANBERNARDINO

Last observed10/1/2026, 03:05:50Open ASN profile →

AS19739 relationship topology

Showing 3 / 3

AS19739County of San Bernardino

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS5650FRONTIER-FRTR - Frontier Communications of America, Inc.

Relationship: Upstream
Observed weight: 291
ASN registration country: United States
Latest RIS data: 11/9/2026, 00:00:00

Open AS5650 profile →

All adjacent autonomous systems

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3 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS5650Observed weight 291	FRONTIER-FRTR - Frontier Communications of America, Inc.	Upstream	United States	8/21/2019, 00:00:00	11/9/2026, 00:00:00	1,739
AS20001Observed weight 269	TWC-20001-PACWEST - Charter Communications Inc	Upstream	United States	8/21/2019, 00:00:00	11/9/2026, 00:00:00	976
AS3356Observed weight 263	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/21/2019, 00:00:00	11/9/2026, 00:00:00	6,130

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