Network topology

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

AS21301

Currently announcedSnapshot awaiting refresh

UK-NATWEST-AS21301 Natwest Markets PLC · UK-NATWEST-AS21301

Last observed10/1/2026, 07:04:07Open ASN profile →

AS21301 relationship topology

Showing 3 / 3

AS21301UK-NATWEST-AS21301 Natw…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS1273CW - IDDQD-AS

Relationship: Upstream
Observed weight: 278
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

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3 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS1273Observed weight 278	CW - IDDQD-AS	Upstream	RIR did not provide a registration country	8/21/2019, 00:00:00	9/30/2026, 00:00:00	662
AS32787Observed weight 264	PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Upstream	United States	8/21/2019, 00:00:00	9/30/2026, 00:00:00	3,240
AS2856Observed weight 70	BT-UK-AS British Telecommunications Limited	Upstream	United Kingdom	8/21/2019, 00:00:00	9/30/2026, 00:00:00	87

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