% 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 '91.192.12.0 - 91.192.15.255'

% Abuse contact for '91.192.12.0 - 91.192.15.255' is 'abuse@vattenfall.se'

inetnum:        91.192.12.0 - 91.192.15.255
netname:        VATTENFALL-NET
country:        DE
org:            ORG-VEIS2-RIPE
admin-c:        DS20578-RIPE
admin-c:        PZAR-RIPE
tech-c:         DS20578-RIPE
tech-c:         PZAR-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         HANSENET-MNT
mnt-routes:     MNT-VATTENFALL
mnt-domains:    HANSENET-MNT
mnt-by:         DTAG-RR
mnt-by:         DTAG-NIC
mnt-by:         vattenfall-mnt
created:        2007-01-25T15:28:38Z
last-modified:  2024-06-28T08:38:02Z
source:         RIPE
sponsoring-org: ORG-DTA2-RIPE

organisation:   ORG-VEIS2-RIPE
org-name:       Vattenfall Europe Information Services GmbH
country:        DE
org-type:       OTHER
address:        Vattenfall Europe Information Services GmbH
address:        Ueberseering 12
address:        22297 Hamburg
address:        GERMANY
abuse-c:        AC29236-RIPE
mnt-ref:        mnt-veis
mnt-ref:        Hansenet-NOC
mnt-by:         DTAG-NIC
mnt-by:         mnt-veis
tech-c:         SF2550-RIPE
tech-c:         BS6189-RIPE
created:        2012-06-04T11:47:58Z
last-modified:  2024-06-28T08:36:58Z
source:         RIPE # Filtered

person:         Dirk Scherbarth
nic-hdl:        DS20578-RIPE
address:        Vattenfall Europe Information Service GmBH
address:        DE
phone:          +4940600054710
mnt-by:         EU-IBM-NIC-MNT
created:        2017-06-28T14:35:54Z
last-modified:  2024-04-11T09:13:17Z
source:         RIPE # Filtered

person:         Pawel Zareba
address:        Francuska 34
address:        40-028 Katowice
phone:          + 48 789 336 661
nic-hdl:        PZAR-RIPE
mnt-by:         vattenfall-mnt
created:        2024-05-17T10:41:44Z
last-modified:  2024-05-17T10:41:44Z
source:         RIPE # Filtered

% Information related to '91.192.12.0/22AS42274'

route:          91.192.12.0/22
descr:          VATTENFALL
origin:         AS42274
mnt-by:         HANSENET-MNT
mnt-by:         MNT-VATTENFALL
mnt-by:         vattenfall-mnt
created:        2007-01-26T10:31:06Z
last-modified:  2024-08-19T09:54:20Z
source:         RIPE

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

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