AS21054

Name: AS21054 — Natwest Markets PLC
Creator: ipdex

Natwest Markets PLC Unknown registered in United Kingdom

13IPv4 prefixes

0IPv6 prefixes

#20,769AS Rank

327/327RIS visibility

#289Rank in United Kingdom

2001-08-08Allocated

Natwest Markets PLC (AS21054) — Unknown, registered in United Kingdom. announces 13 IPv4 prefixes + 0 IPv6 prefixes. Rank in United Kingdom: #289. Allocated: 2001-08-08.

IPv4 13IPv6 0

Announced prefixes · 13

v4 155.136.0.0/16 unknown
v4 155.136.0.0/17 unknown
v4 155.136.128.0/17 unknown
v4 155.136.144.0/24 unknown
v4 155.136.146.0/24 unknown
v4 155.136.197.0/24 unknown
v4 155.136.202.0/24 unknown
v4 155.136.203.0/24 unknown
v4 155.136.60.0/22 unknown
v4 155.136.60.0/24 unknown
v4 155.136.61.0/24 unknown
v4 155.136.62.0/24 unknown
v4 155.136.63.0/24 unknown

Routing: 15 IPv4 · 0 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	13
2026-06-13	13
2026-06-14	15
2026-06-16	13

AS topology · Customer cone 1

Providers · 3

AS1273 Vodafone Group PLC
AS32787 Akamai Technologies, Inc.
AS2856 British Telecommunications PLC

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