Network topology

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

AS213152

Currently announcedSnapshot awaiting refresh

NBU Narodni bezpecnostni urad Czech Republic · NBU

Last observed10/22/2026, 16:20:41Open ASN profile →

AS213152 relationship topology

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AS213152NBU Narodni bezpecnostn…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2852CESNET2 CESNET z.s.p.o.

Relationship: Upstream
Observed weight: 402
ASN registration country: Czechia
Latest RIS data: 10/12/2026, 00:00:00

Open AS2852 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
AS2852Observed weight 402	CESNET2 CESNET z.s.p.o.	Upstream	Czechia	8/28/2019, 00:00:00	10/12/2026, 00:00:00	532	361
AS6855Observed weight 76	Slovak Telekom, a.s.	Upstream	Slovakia	8/28/2019, 00:00:00	10/12/2026, 00:00:00	176	11

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