Network topology

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

AS51420

Currently announcedSnapshot awaiting refresh

CYRILEK-AS cyrilek.net z.s. · CYRILEK-AS

Last observed10/4/2026, 17:34:50Open ASN profile →

AS51420 relationship topology

Showing 2 / 2

AS51420CYRILEK-AS cyrilek.net …

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS44489Starnet STARNET, s.r.o.

Relationship: Upstream
Observed weight: 230
ASN registration country: Czechia
Latest RIS data: 10/26/2026, 08:00:00

Open AS44489 profile →

All adjacent autonomous systems

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

2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS44489Observed weight 230	Starnet STARNET, s.r.o.	Upstream	Czechia	8/25/2019, 00:00:00	10/26/2026, 08:00:00	3,236	0
AS28725Observed weight 226	CETIN-AS CETIN a.s.	Upstream	Czechia	8/25/2019, 00:00:00	10/26/2026, 08:00:00	345	0

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