// ASN

AS21054

UK-NATWEST-AS21054 - Natwest Markets PLC, GB

Detailed information about the Autonomous System. Need another one? Look up a different ASN.

ASN: AS21054
Organization: JERSEY
Description: UK-NATWEST-AS21054 - Natwest Markets PLC, GB
Registry (RIR): RIPE
Created: 2013-06-20
Updated: 2026-04-10
IPv4 Prefixes: 11
IPv6 Prefixes: 0

IPv4 Prefixes

11 total · showing first 10

155.136.0.0/16
155.136.0.0/17
155.136.128.0/17
155.136.197.0/24
155.136.202.0/24
155.136.203.0/24
155.136.60.0/22
155.136.60.0/24
155.136.61.0/24
155.136.62.0/24

What is AS21054?

AS21054 is an Autonomous System Number (ASN) assigned to JERSEY. An ASN identifies a network or group of IP prefixes operated under a common routing policy in the BGP protocol.

Looking for more ASN data?

Use our ASN Lookup Tool for real-time WHOIS queries, or explore our API documentation to integrate ASN data into your applications.

ASN Lookup Tool →