% 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 '2a03:fc80::/29'

% Abuse contact for '2a03:fc80::/29' is 'abuse@dns-net.de'

inet6num:       2a03:fc80::/29
netname:        DE-1STCOM-20111121
country:        DE
org:            ORG-cGi1-RIPE
admin-c:        AL6823-RIPE
tech-c:         MB19506-RIPE
status:         ALLOCATED-BY-RIR
mnt-by:         RIPE-NCC-HM-MNT
mnt-lower:      DNSNET-MNT
mnt-routes:     DNSNET-MNT
created:        2017-01-04T14:40:39Z
last-modified:  2017-01-04T14:40:39Z
source:         RIPE # Filtered

organisation:   ORG-cGi1-RIPE
org-name:       DNS:NET Internet Service GmbH
country:        DE
org-type:       LIR
address:        Zimmerstr. 23
address:        10969
address:        Berlin
address:        GERMANY
phone:          +4930667650
fax-no:         +49 30 66765 499
abuse-c:        AR13475-RIPE
mnt-by:         DNSNET-MNT
mnt-ref:        DNSNET-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
admin-c:        DNET-RIPE
admin-c:        MB19506-RIPE
admin-c:        AL6823-RIPE
created:        2004-04-17T11:05:01Z
last-modified:  2020-12-16T13:30:36Z
source:         RIPE # Filtered

person:         Alexander Lucke
address:        DNS:NET Internet Service GmbH
address:        Zimmerstr. 23
address:        10969 Berlin
address:        Germany
phone:          +49.30667650
fax-no:         +49.3066765499
nic-hdl:        AL6823-RIPE
mnt-by:         DNSNET-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2020-04-30T09:28:58Z
source:         RIPE # Filtered

person:         Marlon Berlin
address:        DNS:NET Internet Service GmbH
address:        Zimmerstr. 23
address:        10969 Berlin
address:        Germany
phone:          +49.30667650
fax-no:         +49.3066765499
nic-hdl:        MB19506-RIPE
mnt-by:         DNSNET-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2020-04-30T09:26:00Z
source:         RIPE # Filtered

% Information related to '2a03:fc80::/29AS15366'

route6:         2a03:fc80::/29
descr:          DNS:NET Internet Service GmbH
origin:         AS15366
mnt-by:         DNSNET-MNT
created:        2020-07-06T14:20:05Z
last-modified:  2020-07-06T14:20:05Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.120 (BUSA)