ASN Lookup Tool
AS3300 British Telecommunications PLC

An 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.

ASN Details

ASN
AS3300
Organisation
British Telecommunications PLC
AS Name
BT
IPv4 Addresses Announced
229,376
IPv4 Prefixes Announced
137
Bogon Prefixes Announced
0
IPv4 Space Rank
#1,023 out of 74,219
Registry
RIPE
Registered Country
GB flag GB
Registration Date
2002-09-19
Registration Change
2022-07-18

Receiving From

ASN
Organisation
ASN
Organisation
US flag Sprint
ASN
Organisation
JP flag Internet Initiative Japan Inc.
ASN
Organisation
JP flag BIGLOBE Inc.
ASN
Organisation
US flag PCCW Global Inc.
ASN
Organisation
US flag Unitas Global LLC
ASN
Organisation
HK flag The Hong Kong Internet Exchange Limited
ASN
Organisation
ID flag Telekomunikasi Indonesia PT
ASN
Organisation
JP flag Telstra International Limited
ASN
Organisation
US flag Hurricane Electric LLC
ASN
Organisation
AU flag VOCUS PTY LTD
Showing 10 of 44 Results View More >

Transit To

ASN
Organisation
ASN
Organisation
US flag RADIANZ Americas Inc.
ASN
Organisation
EU flag Shell Information Technology International B.V.
ASN
Organisation
US flag FACTORY MUTUAL INSURANCE COMPANY
ASN
Organisation
US flag HCL AMERICA INC
ASN
Organisation
NL flag Koninklijke Philips N.V.
ASN
Organisation
US flag BristolMyers Squibb Company
ASN
Organisation
ZA flag Altron Nexus Pty Ltd
ASN
Organisation
US flag Novartis Pharmaceuticals
ASN
Organisation
BE flag Solvay SA
ASN
Organisation
AU flag Specsavers Pty Ltd
Showing 10 of 14 Results View More >

Active Prefixes

Prefix
Range From
Range To
Showing 10 of 137 Results View More >