Network topology

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

AS21401

Currently announcedSnapshot awaiting refresh

BORZEN-AS Borzen d.o.o. · BORZEN-AS

Last observed10/1/2026, 07:25:10Open ASN profile →

AS21401 relationship topology

Showing 2 / 2

AS21401BORZEN-AS Borzen d.o.o.

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS5603SIOL-NET Telekom Slovenije, d.d.

Relationship: Upstream
Observed weight: 266
ASN registration country: Slovenia
Latest RIS data: 9/30/2026, 16:00:00

Open AS5603 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
AS5603Observed weight 266	SIOL-NET Telekom Slovenije, d.d.	Upstream	Slovenia	8/21/2019, 00:00:00	9/30/2026, 16:00:00	344	0
AS21283Observed weight 9	A1SI-AS A1 Slovenija telekomunikacijske storitve,d.d.	Upstream	Slovenia	8/21/2019, 00:00:00	9/30/2026, 16:00:00	14	0

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