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ASN Lookup Tool
AS21054 RBSG-UK-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS21054
Organisation
Natwest Markets PLC
Name
RBSG-UK-AS
Total IPv4 Addresses
61184
Total IPv4 Prefixes
28
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#3,850 out of 77,221
Registry
Ripe
Registered Country
GB flag GB
Registered Country Name
United Kingdom of Great Britain and Northern Ireland (the)
Registered Date
2002-03-07
Registration Last Change
2019-12-04
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS32787
US flagAkamai Technologies, Inc.
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix155.136.0.0/19
Range From155.136.0.0
Range To155.136.31.255
Prefix155.136.32.0/20
Range From155.136.32.0
Range To155.136.47.255
Prefix155.136.48.0/21
Range From155.136.48.0
Range To155.136.55.255
Prefix155.136.60.0/24
Range From155.136.60.0
Range To155.136.60.255
Prefix155.136.61.0/24
Range From155.136.61.0
Range To155.136.61.255
Showing 5 of 28
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.