Network topology

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

AS21054

Currently announcedSnapshot awaiting refresh

Natwest Markets PLC · UK-NATWEST-AS21054

Last observed10/1/2026, 06:37:59Open ASN profile →

AS21054 relationship topology

Showing 3 / 3

AS21054Natwest Markets PLC

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS1273CW - IDDQD-AS

Relationship: Upstream
Observed weight: 300
ASN registration country: RIR did not provide a registration country
Latest RIS data: 9/30/2026, 00:00:00

Open AS1273 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
AS1273Observed weight 300	CW - IDDQD-AS	Upstream	RIR did not provide a registration country	8/21/2019, 00:00:00	9/30/2026, 00:00:00	769
AS32787Observed weight 275	PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Upstream	United States	8/21/2019, 00:00:00	9/30/2026, 00:00:00	3,238
AS2856Observed weight 86	BT-UK-AS British Telecommunications Limited	Upstream	United Kingdom	8/21/2019, 00:00:00	9/30/2026, 00:00:00	129

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