% 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://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

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

% Information related to '2a01:5e0:15::/48'

% Abuse contact for '2a01:5e0:15::/48' is 'abuse@vodafone.cz'

inet6num:       2a01:5e0:15::/48
netname:        CZ-ABK-REALITY
descr:          ABK Reality, s.r.o.
descr:          Hradec Kralove
country:        CZ
admin-c:        KB5735-RIPE
tech-c:         KB5735-RIPE
status:         ASSIGNED
mnt-by:         OSKR-MNT
created:        2018-11-28T12:18:04Z
last-modified:  2024-04-08T17:03:54Z
source:         RIPE

person:         Kabilka Bedrich
address:        ABK Reality, s.r.o.
address:        Edvarda Benese 1543/46
address:        Hradec Kralove
address:        Czech Republic
phone:          +420 608 024 665
nic-hdl:        KB5735-RIPE
mnt-by:         OSKR-MNT
created:        2015-04-09T12:33:56Z
last-modified:  2021-12-22T15:34:46Z
source:         RIPE # Filtered

% Information related to '2a01:5e0::/33AS16019'

route6:         2a01:5e0::/33
descr:          Vodafone Czech Republic a.s.
origin:         AS16019
mnt-by:         VFCZ-MNT
created:        2021-02-02T11:59:05Z
last-modified:  2021-02-02T11:59:05Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112 (ABERDEEN)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain