Natwest Markets PLC operates AS21054: 21 IPv4 prefixes covering 60,672 addresses, most of them in 
United Kingdom.
By IPv4 addresses the network ranks #3,623 worldwide and #79 of 1,931 networks in United Kingdom. That is 0.05% of the country’s IPv4 space.
The largest block is 155.136.60.0 to 155.136.143.255 with 21,504 addresses, geolocated to London (Islington).
- IPv4 addresses
- 60,672
- IPv4 prefixes
- 21
- World rank
- #3,623
- Country share
- 0.05%
Addresses by country
- United Kingdom 100%
Largest blocks
- 155.136.60.0 London (Islington)21,504
- 155.136.0.0 London (Islington)14,336
- 155.136.152.0 London (Islington)11,776
- 155.136.234.0 London (Islington)5,632
- 155.136.202.0 London (Islington)5,632
- 155.136.147.0 London (Islington)1,024
- 155.136.228.0 London (Islington)512
- 155.136.145.0 London (Islington)256
Networks of similar size
- AS37179 Africa Independent Network Exchange (Pty) LTD (AfricaINX)
60,672 - AS19151 BroadbandONE, LLC
60,672 - AS6854 PJSC MegaFon
60,672 - AS59078 Yunify Technologies Inc.
60,672 - AS7642 Dhivehi Raajjeyge Gulhun Public Limited Company
60,416 - AS141771 China Telecom60,416
- AS18859 GVEC.net, LLC60,416
- AS50821 Bredband2 Stockholms Stadsnaet AB
60,416
IPv4 prefixes
- 155.136.0.0/19
- 155.136.32.0/20
- 155.136.48.0/21
- 155.136.60.0/22
- 155.136.64.0/18
- 155.136.128.0/20
- 155.136.145.0/24
- 155.136.147.0/24
- 155.136.148.0/23
- 155.136.150.0/24
- 155.136.152.0/21
- 155.136.160.0/19
- 155.136.192.0/22
- 155.136.196.0/23
- 155.136.202.0/23
- 155.136.204.0/22
- 155.136.208.0/20
- 155.136.228.0/23
- 155.136.234.0/23
- 155.136.236.0/22
- 155.136.240.0/20
Questions and answers
Who owns AS21054?
Autonomous system AS21054 is operated by Natwest Markets PLC.
How many IP addresses does AS21054 have?
The network holds 60,672 IPv4 addresses in 21 prefixes.
Which country is AS21054 in?
The main country is United Kingdom.
How big is AS21054?
By IPv4 addresses it ranks #3,623 worldwide.
What is the largest address block of AS21054?
155.136.60.0 to 155.136.143.255, 21,504 addresses.