% 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 '217.73.80.0 - 217.73.87.255'

% Abuse contact for '217.73.80.0 - 217.73.87.255' is 'abuse@infomir.com.ua'

inetnum:        217.73.80.0 - 217.73.87.255
netname:        INFOMIR-PPPOE-NET
descr:          Dynamic pool for PPPoE users
remarks:        INFRA-AW
country:        UA
org:            ORG-IJ10-RIPE
admin-c:        INFM-RIPE
tech-c:         INFM-RIPE
status:         ASSIGNED PA
mnt-by:         ALS10-MNT
created:        2009-05-29T15:29:52Z
last-modified:  2014-09-14T11:20:36Z
source:         RIPE

organisation:   ORG-IJ10-RIPE
org-name:       Infomir LLC
country:        UA
org-type:       LIR
address:        Nebesnoy Sotni ave. 4D
address:        65121
address:        Odessa
address:        UKRAINE
phone:          +380487590863
fax-no:         +380487188899
admin-c:        AS30312-RIPE
abuse-c:        INFM-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        ALS10-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         ALS10-MNT
created:        2007-10-26T11:34:45Z
last-modified:  2020-12-16T13:09:42Z
source:         RIPE # Filtered

role:           Infomir Administrative Team
address:        Infomir
address:        Glushko 11i
address:        65000 Odessa
address:        Ukraine
phone:          +38 048 7400863
phone:          +38 095 2791900
fax-no:         +38 048 7188899
org:            ORG-IJ10-RIPE
admin-c:        AS30312-RIPE
tech-c:         AS30312-RIPE
nic-hdl:        INFM-RIPE
abuse-mailbox:  abuse@infomir.com.ua
mnt-by:         ALS10-MNT
created:        2009-01-06T21:29:06Z
last-modified:  2013-08-30T12:27:19Z
source:         RIPE # Filtered

% Information related to '217.73.80.0/21AS44291'

route:          217.73.80.0/21
descr:          PPPoE dynamic pool
origin:         AS44291
mnt-by:         ALS10-MNT
created:        2009-05-29T15:50:10Z
last-modified:  2013-08-30T12:33:59Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.111 (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