Network topology

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

AS42157

Currently announcedSnapshot awaiting refresh

A1BG A1 Bulgaria EAD · A1BG

Last observed10/3/2026, 13:53:55Open ASN profile →

AS42157 relationship topology

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AS42157A1BG A1 Bulgaria EAD

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS8717A1BG A1 Bulgaria EAD

Relationship: Upstream
Observed weight: 268
ASN registration country: Bulgaria
Latest RIS data: 10/30/2026, 00:00:00

Open AS8717 profile →

All adjacent autonomous systems

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

1 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS8717Observed weight 268	A1BG A1 Bulgaria EAD	Upstream	Bulgaria	8/23/2019, 00:00:00	10/30/2026, 00:00:00	337	0

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