% 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 '91.210.248.0 - 91.210.251.255'

% Abuse contact for '91.210.248.0 - 91.210.251.255' is 'support@corbinatelecom.net'

inetnum:        91.210.248.0 - 91.210.251.255
netname:        CORBINA-NET-KYIV
country:        UA
org:            ORG-CTL56-RIPE
admin-c:        CORB-RIPE
tech-c:         CORB-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         UA-CORBINA-MNT
mnt-routes:     UA-CORBINA-MNT
mnt-domains:    UA-CORBINA-MNT
created:        2008-11-21T13:00:42Z
last-modified:  2019-01-17T10:21:13Z
source:         RIPE

organisation:   ORG-CTL56-RIPE
org-name:       Corbina Telecom Llc.
country:        UA
org-type:       LIR
address:        P.O. Box 54
address:        03148
address:        Kyiv
address:        UKRAINE
phone:          +380 443777075
admin-c:        SS32811-RIPE
admin-c:        ZLOB-RIPE
tech-c:         SS32811-RIPE
tech-c:         ZLOB-RIPE
tech-c:         CORB-RIPE
abuse-c:        AR46445-RIPE
mnt-ref:        UA-CORBINA-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         UA-CORBINA-MNT
created:        2018-05-14T13:27:18Z
last-modified:  2023-03-12T11:10:33Z
source:         RIPE # Filtered

role:           Corbina Telecom NOC
nic-hdl:        CORB-RIPE
address:        Gnata Yuri St. 20
address:        03148 Kyiv
address:        Ukraine
remarks:        ------------------------
remarks:        Office phones:
phone:          +380 44 3777075
remarks:        Tech Support phone:
phone:          +380 44 3777075
phone:          +380 44 3777475
remarks:        ------------------------
abuse-mailbox:  abuse@corbina.com.ua
admin-c:        ZLOB-RIPE
tech-c:         ZLOB-RIPE
tech-c:         OREL-RIPE
remarks:        ----------------------------------------------------------
remarks:        Customer support: support@corbina.com.ua
remarks:        Mail & SPAM issues: support@corbina.com.ua
remarks:        Billing: acct@corbinatelecom.net
remarks:        Routing, peering & security: noc@corbinatelecom.net
remarks:        ----------------------------------------------------------
mnt-by:         UA-CORBINA-MNT
created:        2008-03-16T07:44:24Z
last-modified:  2019-01-17T10:35:08Z
source:         RIPE # Filtered

% Information related to '91.210.250.0/23AS48438'

route:          91.210.250.0/23
descr:          Corbina: Kyiv Route #2
origin:         AS48438
mnt-by:         UA-CORBINA-MNT
created:        2008-12-04T20:32:22Z
last-modified:  2008-12-04T20:32:46Z
source:         RIPE # Filtered

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