% 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 '5.101.16.0 - 5.101.23.255'

% Abuse contact for '5.101.16.0 - 5.101.23.255' is 'adm-group@tattelecom.ru'

inetnum:        5.101.16.0 - 5.101.23.255
netname:        RU-TATTELECOM-20120626
country:        RU
org:            ORG-OT4-RIPE
admin-c:        GR10880-RIPE
tech-c:         GR10880-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TATTELECOM-MNT
created:        2016-03-18T10:38:00Z
last-modified:  2024-09-12T07:44:47Z
source:         RIPE # Filtered

organisation:   ORG-OT4-RIPE
org-name:       PJSC "TATTELECOM"
country:        RU
org-type:       LIR
address:        Ershova str, 57
address:        420061
address:        Kazan
address:        RUSSIAN FEDERATION
phone:          +7 843 2990399
phone:          +7 843 2990354
fax-no:         +7 843 2951219
admin-c:        GR10880-RIPE
abuse-c:        AR16966-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        TATTELECOM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TATTELECOM-MNT
created:        2004-04-17T11:59:27Z
last-modified:  2024-09-12T07:44:51Z
source:         RIPE # Filtered

person:         Service Provider PJSC Tattelecom
address:        Russian Federation, Kazan 420061, N. Ershova 57
remarks:        Admin contact: Head of data networks operation department PJSC Tattelecom - Ruslan Gaynutdinov
phone:          +7 843 2990354
nic-hdl:        GR10880-RIPE
mnt-by:         GR10880-MNT
created:        2019-04-22T10:49:15Z
last-modified:  2020-01-09T05:40:32Z
source:         RIPE # Filtered

% Information related to '5.101.22.0/24AS28840'

route:          5.101.22.0/24
origin:         AS28840
mnt-by:         TATTELECOM-MNT
mnt-by:         GR10880-MNT
created:        2019-12-23T14:04:11Z
last-modified:  2019-12-23T14:04:11Z
source:         RIPE

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