Network topology

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

AS27690

Currently announcedSnapshot awaiting refresh

AS27690 - CITYTECH S.A · AS27690

Last observed10/1/2026, 23:46:35Open ASN profile →

AS27690 relationship topology

Showing 3 / 3

AS27690CITYTECH S.A

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS16814AS16814 - NSS S.A.

Relationship: Upstream
Observed weight: 321
ASN registration country: Argentina
Latest RIS data: 10/1/2026, 00:00:00

Open AS16814 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
AS16814Observed weight 321	AS16814 - NSS S.A.	Upstream	Argentina	8/21/2019, 00:00:00	10/1/2026, 00:00:00	956
AS10753Observed weight 255	LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE - Level 3 Parent, LLC	Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	333
AS3356Observed weight 12	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/21/2019, 00:00:00	10/1/2026, 00:00:00	28

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