Network topology

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

AS50838

Currently announcedSnapshot awaiting refresh

Sandro Mastronardi · MASTRONARDI

Last observed10/4/2026, 15:59:51Open ASN profile →

AS50838 relationship topology

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AS50838Sandro Mastronardi

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS57948Cobalt Group BV

Relationship: Upstream
Observed weight: 250
ASN registration country: Belgium
Latest RIS data: 10/4/2026, 00:00:00

Open AS57948 profile →

All adjacent autonomous systems

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

1 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS57948Observed weight 250	Cobalt Group BV	Upstream	Belgium	8/25/2019, 00:00:00	10/4/2026, 00:00:00	0	330

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