Network topology

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

AS16291

Currently announcedSnapshot awaiting refresh

GRUDNIK-KRK-PL Grudnik Sp. z o.o. · GRUDNIK-KRK-PL

Last observed9/30/2026, 16:59:53Open ASN profile →

AS16291 relationship topology

Showing 2 / 2

AS16291GRUDNIK-KRK-PL Grudnik …

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS12912TMPL T-Mobile Polska S.A.

Relationship: Upstream
Observed weight: 239
ASN registration country: Poland
Latest RIS data: 11/1/2026, 00:00:00

Open AS12912 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
AS12912Observed weight 239	TMPL T-Mobile Polska S.A.	Upstream	Poland	8/19/2019, 00:00:00	11/1/2026, 00:00:00	310	0
AS47273Observed weight 31	KSI-KR-AS Krzysztof Andrzej Kozak trading as P.P.H.U. "ARTUS"	Upstream	Poland	8/19/2019, 00:00:00	11/1/2026, 00:00:00	33	0

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