% 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 '2a06:63c0::/29'

% Abuse contact for '2a06:63c0::/29' is 'abuse@telekom.rs'

inet6num:       2a06:63c0::/29
netname:        RS-TELEKOM-20150805
descr:          2a06:63c0::/29
country:        RS
org:            ORG-TS21-RIPE
admin-c:        TSAD-RIPE
tech-c:         TSTE-RIPE
status:         ALLOCATED-BY-RIR
mnt-by:         KTI-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2015-08-05T13:06:10Z
last-modified:  2023-08-29T12:25:13Z
source:         RIPE # Filtered

organisation:   ORG-TS21-RIPE
org-name:       TELEKOM SRBIJA a.d.
country:        RS
org-type:       LIR
address:        Bulevar umetnosti 16a
address:        11070
address:        Belgrade
address:        SERBIA
phone:          +381113120124
fax-no:         +381113120124
admin-c:        DJDJ-RIPE
admin-c:        ANAK-RIPE
admin-c:        ANAV-RIPE
admin-c:        SSPR-RIPE
admin-c:        TR6361-RIPE
mnt-ref:        TELEKOM-MNT
mnt-ref:        AS8400-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TELEKOM-MNT
abuse-c:        TSA44-RIPE
created:        2004-04-17T12:25:13Z
last-modified:  2024-08-21T13:17:31Z
source:         RIPE # Filtered

role:           TELEKOM ADMIN
address:        TELEKOM SRBIJA
admin-c:        ANAV-RIPE
tech-c:         ANAK-RIPE
abuse-mailbox:  abuse@telekom.rs
nic-hdl:        TSAD-RIPE
mnt-by:         TELEKOM-MNT
created:        2010-04-21T11:29:22Z
last-modified:  2013-03-06T07:29:07Z
source:         RIPE # Filtered

role:           TELEKOM TECHNICAL
address:        TELEKOM SRBIJA
admin-c:        ANAV-RIPE
tech-c:         ANAK-RIPE
tech-c:         ANAV-RIPE
tech-c:         JECA-RIPE
tech-c:         DJDJ-RIPE
abuse-mailbox:  abuse@telekom.rs
nic-hdl:        TSTE-RIPE
mnt-by:         TELEKOM-MNT
created:        2010-04-21T11:31:46Z
last-modified:  2013-03-06T07:29:51Z
source:         RIPE # Filtered

% Information related to '2a06:63c0::/29AS8400'

route6:         2a06:63c0::/29
origin:         AS8400
descr:          Telekom Srbija
mnt-by:         AS8400-MNT
mnt-by:         TELEKOM-MNT
created:        2023-08-29T12:23:25Z
last-modified:  2023-08-29T12:23:25Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.114 (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