Network topology

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

AS15027

Currently announcedSnapshot awaiting refresh

FH-ASN-15027 - Foley Hoag LLP · FH-ASN-15027

Last observed9/30/2026, 13:32:19Open ASN profile →

AS15027 relationship topology

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AS15027Foley Hoag LLP

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS19855MASERGY - Masergy Communications, Inc.

Relationship: Upstream
Observed weight: 510
ASN registration country: United States
Latest RIS data: 9/30/2026, 00:00:00

Open AS19855 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
AS19855Observed weight 510	MASERGY - Masergy Communications, Inc.	Upstream	United States	8/19/2019, 00:00:00	9/30/2026, 00:00:00	663	0
AS174Observed weight 254	Cogent Communications, LLC	Upstream	United States	8/19/2019, 00:00:00	9/30/2026, 00:00:00	329	0

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