% APNIC found the following authoritative answer from: whois.ripe.net

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '147.147.0.0 - 147.152.255.255'

% Abuse contact for '147.147.0.0 - 147.152.255.255' is 'protect@bt.com'

inetnum:        147.147.0.0 - 147.152.255.255
netname:        BT
descr:          British Telecommunications plc
descr:          BT Centre 81 Newgate St
descr:          London, 7AJ
country:        GB
org:            ORG-BT4-RIPE
admin-c:        BCER1-RIPE
admin-c:        BTCR1-RIPE
tech-c:         BTCR3-RIPE
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
mnt-by:         BTENT-MNT
mnt-lower:      BTENT-MNT
mnt-routes:     BTENT-MNT
created:        2012-01-18T09:29:28Z
last-modified:  2026-03-17T06:29:19Z
source:         RIPE

% Information related to '147.148.0.0/14AS2856'

route:          147.148.0.0/14
descr:          BTL
origin:         AS2856
mnt-by:         BTNET-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2002-12-04T12:50:05Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.124.1 (DEXTER)