% 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 '91.200.52.0 - 91.200.55.255'

% Abuse contact for '91.200.52.0 - 91.200.55.255' is 'abuse@utelecom.com.ua'

inetnum:        91.200.52.0 - 91.200.55.255
netname:        STCOMUA-NET
country:        UA
org:            ORG-PNSi1-RIPE
admin-c:        VNH3-RIPE
tech-c:         ANH7-RIPE
status:         ASSIGNED PI
mnt-by:         STCOMUA-MNT
mnt-by:         mnt-ua-utg-1
mnt-by:         RIPE-NCC-END-MNT
mnt-routes:     STCOMUA-MNT
mnt-domains:    STCOMUA-MNT
created:        2007-09-28T07:37:37Z
last-modified:  2019-12-23T07:18:37Z
source:         RIPE
sponsoring-org: ORG-UTGL1-RIPE

organisation:   ORG-PNSi1-RIPE
org-name:       PP NVF Sistema i Tehnika
country:        UA
org-type:       OTHER
address:        vul. Yednosti, bud. 76
address:        m. Marganets
address:        Dnipropetrovska obl.
address:        53407 Ukraine
phone:          +380566522273
abuse-c:        AR19689-RIPE
admin-c:        VNH3-RIPE
tech-c:         UN1580-RIPE
mnt-ref:        STCOMUA-MNT
mnt-by:         STCOMUA-MNT
mnt-by:         mnt-ua-utg-1
created:        2007-09-22T16:42:08Z
last-modified:  2022-12-01T16:43:29Z
source:         RIPE # Filtered

person:         Aleksandr Nikolaevich Harlampov
address:        1 Brulova str.,
address:        Kiev, Ukraine
phone:          +380 50 4113644
nic-hdl:        ANH7-RIPE
mnt-by:         STCOMUA-MNT
created:        2007-09-22T16:42:08Z
last-modified:  2007-10-16T15:54:42Z
source:         RIPE # Filtered

person:         Vladimir Nikolaevich Harlampov
address:        7/2 Sadovaya str.,
address:        Marganets, Ukraine
phone:          +380 50 4519590
nic-hdl:        VNH3-RIPE
mnt-by:         STCOMUA-MNT
created:        2007-09-22T16:42:08Z
last-modified:  2017-04-11T13:43:43Z
source:         RIPE # Filtered

% Information related to '91.200.52.0/24AS43786'

route:          91.200.52.0/24
descr:          PP NPP Sistema i Tehnika
origin:         AS43786
mnt-by:         STCOMUA-MNT
created:        2010-11-23T11:35:01Z
last-modified:  2010-11-23T11:35:01Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112 (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