% 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 '2a0c:7040:2000::/35'

% Abuse contact for '2a0c:7040:2000::/35' is 'ripe@dalunet.cz'

inet6num:       2a0c:7040:2000::/35
netname:        CZ-DALUNET-CLIENTS-2a0c-7040-2000
country:        CZ
org:            ORG-DS357-RIPE
admin-c:        AA35942-RIPE
tech-c:         AA35942-RIPE
remarks:        Individual client assignments, /52 per client
status:         AGGREGATED-BY-LIR
assignment-size:52
mnt-by:         cz-dalunet-1-mnt
created:        2020-05-29T14:26:45Z
last-modified:  2020-05-29T14:26:45Z
source:         RIPE

organisation:   ORG-DS357-RIPE
org-name:       DaLuNET s.r.o.
country:        CZ
org-type:       LIR
address:        Plzenska 64
address:        27033
address:        Jesenice
address:        CZECH REPUBLIC
phone:          +420313105600
admin-c:        AA35942-RIPE
tech-c:         AA35942-RIPE
abuse-c:        AR46087-RIPE
mnt-ref:        cz-dalunet-1-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         cz-dalunet-1-mnt
created:        2018-04-19T06:51:16Z
last-modified:  2020-12-16T13:24:22Z
source:         RIPE # Filtered

role:           AS203488-Admins
address:        Plzenska 64
abuse-mailbox:  ripe@dalunet.cz
address:        Jesenice u Rakovnika, 27033
admin-c:        CD8494-RIPE
admin-c:        RZ3553-RIPE
tech-c:         CD8494-RIPE
org:            ORG-DS357-RIPE
tech-c:         RZ3553-RIPE
nic-hdl:        AA35942-RIPE
mnt-by:         cz-dalunet-1-mnt
created:        2020-04-01T09:48:06Z
last-modified:  2020-04-24T09:24:04Z
source:         RIPE # Filtered

% Information related to '2a0c:7040::/32AS203488'

route6:         2a0c:7040::/32
origin:         AS203488
mnt-by:         cz-dalunet-1-mnt
created:        2020-04-01T10:20:17Z
last-modified:  2020-04-01T10:20:17Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.111 (BUSA)

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