Network topology

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

AS48746

Currently announcedSnapshot awaiting refresh

Air Traffic Services Authority · ATSA-BG

Last observed10/4/2026, 09:31:49Open ASN profile →

AS48746 relationship topology

Showing 2 / 2

AS48746Air Traffic Services Au…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS8717A1BG A1 Bulgaria EAD

Relationship: Upstream
Observed weight: 146
ASN registration country: Bulgaria
Latest RIS data: 10/4/2026, 00:00:00

Open AS8717 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
AS8717Observed weight 146	A1BG A1 Bulgaria EAD	Upstream	Bulgaria	8/23/2019, 00:00:00	10/4/2026, 00:00:00	178	0
AS205132Observed weight 121	BTC-SEC-AS Vivacom Bulgaria EAD	Upstream	Bulgaria	8/23/2019, 00:00:00	10/4/2026, 00:00:00	164	0

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