% 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 '81.89.80.0 - 81.89.85.255'

% Abuse contact for '81.89.80.0 - 81.89.85.255' is 'abuse@chel-net.ru'

inetnum:        81.89.80.0 - 81.89.85.255
netname:        CHEL-NET
descr:          LLC "Active"
descr:          Chelyabinsk, Russia
remarks:        ----------------- A T T E N T I O N! ------------------------
remarks:        Please report SPAM and suspicious activity from this network
remarks:        to abuse@chel-net.ru only. Any messages to any other address,
remarks:        relative SPAM or security issues, will not be concerned.
remarks:        -------------------------------------------------------------
country:        RU
org:            ORG-LLCV1-RIPE
admin-c:        EUS4-RIPE
tech-c:         EUS4-RIPE
status:         ASSIGNED PA
remarks:        INFRA-AW
mnt-by:         CHEL-NET-MNT
created:        2006-04-13T11:48:00Z
last-modified:  2011-11-29T08:51:17Z
source:         RIPE # Filtered

organisation:   ORG-LLCV1-RIPE
org-name:       Limited Liability Company Active
country:        RU
org-type:       LIR
address:        5, Kalinina Street
address:        454084
address:        Chelyabinsk
address:        RUSSIAN FEDERATION
phone:          +73517000000
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         CHEL-NET-MNT
mnt-ref:        CHEL-NET-MNT
mnt-by:         RIPE-NCC-HM-MNT
admin-c:        EUS4-RIPE
abuse-c:        AD10880-RIPE
created:        2006-03-29T09:52:42Z
last-modified:  2020-12-16T13:00:19Z
source:         RIPE # Filtered
fax-no:         +73517001500

person:         Evgeny Starikov
address:        454091, Chelyabinsk, Komsomolsky pr-t 55
phone:          +7 351 2452822
nic-hdl:        EUS4-RIPE
created:        2009-11-30T11:47:24Z
last-modified:  2019-07-12T12:26:30Z
source:         RIPE # Filtered
mnt-by:         EUS-MNT

% Information related to '81.89.81.0/24AS39789'

route:          81.89.81.0/24
descr:          LLC "Active"
descr:          Chelyabinsk, Russia
origin:         AS39789
org:            ORG-LLCV1-RIPE
mnt-by:         CHEL-NET-MNT
created:        2008-08-28T11:03:09Z
last-modified:  2011-11-29T08:53:38Z
source:         RIPE

organisation:   ORG-LLCV1-RIPE
org-name:       Limited Liability Company Active
country:        RU
org-type:       LIR
address:        5, Kalinina Street
address:        454084
address:        Chelyabinsk
address:        RUSSIAN FEDERATION
phone:          +73517000000
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         CHEL-NET-MNT
mnt-ref:        CHEL-NET-MNT
mnt-by:         RIPE-NCC-HM-MNT
admin-c:        EUS4-RIPE
abuse-c:        AD10880-RIPE
created:        2006-03-29T09:52:42Z
last-modified:  2020-12-16T13:00:19Z
source:         RIPE # Filtered
fax-no:         +73517001500

% This query was served by the RIPE Database Query Service version 1.112.1 (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