% 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 '81.21.116.0 - 81.21.119.255'

% Abuse contact for '81.21.116.0 - 81.21.119.255' is 'hostmaster@muerznet.at'

inetnum:        81.21.116.0 - 81.21.119.255
netname:        MUERZNET-AT-NET-02
descr:          Stadtwerke Muerzzuschlag GmbH
country:        AT
admin-c:        MA5242-RIPE
tech-c:         MA5242-RIPE
status:         ASSIGNED PA
mnt-by:         MUERZNET-MNT
mnt-lower:      MUERZNET-MNT
mnt-routes:     MUERZNET-MNT
created:        2006-02-01T08:35:04Z
last-modified:  2006-02-01T08:35:04Z
source:         RIPE # Filtered

role:           MUERZNET Admin
address:        Stadtwerke Muerzzuschlag GmbH
address:        Mariazeller Strasse 45 c
address:        A-8680 Muerzzuschlag
phone:          +43 3852 2025 0
admin-c:        HN699-RIPE
tech-c:         HN699-RIPE
tech-c:         AW1931-RIPE
nic-hdl:        MA5242-RIPE
mnt-by:         MUERZNET-MNT
created:        2006-01-26T09:38:04Z
last-modified:  2006-01-26T09:38:04Z
source:         RIPE # Filtered

% Information related to '81.21.112.0/20AS44462'

route:          81.21.112.0/20
descr:          Stadtwerke Muerzzuschlag GmbH
origin:         AS44462
mnt-by:         MUERZNET-MNT
created:        2008-02-26T13:41:34Z
last-modified:  2008-02-26T13:41:34Z
source:         RIPE

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

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