Network topology

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

AS44091

Currently announcedSnapshot awaiting refresh

SISTEMISPA-AS SISTEMI SPA · SISTEMISPA-AS

Last observed10/3/2026, 20:29:52Open ASN profile →

AS44091 relationship topology

Showing 3 / 3

AS44091SISTEMISPA-AS SISTEMI S…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS28716RETELIT-AS Retelit Digital Services S.p.A.

Relationship: Upstream
Observed weight: 262
ASN registration country: Italy
Latest RIS data: 10/3/2026, 00:00:00

Open AS28716 profile →

All adjacent autonomous systems

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

3 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS28716Observed weight 262	RETELIT-AS Retelit Digital Services S.p.A.	Upstream	Italy	8/23/2019, 00:00:00	10/3/2026, 00:00:00	1,364
AS8220Observed weight 135	COLT COLT Technology Services Group Limited	Upstream	United Kingdom	8/23/2019, 00:00:00	10/3/2026, 00:00:00	206
AS21101Observed weight 131	Sistemi Hardware&Software S.P.A.	Upstream	Italy	8/23/2019, 00:00:00	10/3/2026, 00:00:00	163

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