% 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 'AS24988 - AS25162'

as-block:       AS24988 - AS25162
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:30Z
last-modified:  2018-11-22T15:27:30Z
source:         RIPE

% Information related to 'AS25143'

% Abuse contact for 'AS25143' is 'abuse@lviv.net'

aut-num:        AS25143
as-name:        IU-AS
descr:          Internet-Ukraine LLC
import:         from AS3255 action pref=200; accept ANY
export:         to AS3255 announce AS-IU
import:         from AS48422 action pref=200; accept ANY
export:         to AS48422 announce AS-IU
import:         from AS25529 action pref=70; accept AS-SOKOLUA
export:         to AS25529 announce ANY
import:         from AS25448 action pref=70; accept AS25448
export:         to AS25448 announce AS25143
import:         from AS15645 action pref=100; accept AS-UAIX
export:         to AS15645 announce AS-IU-UAIX
import:         from AS31210 action pref=100; accept AS-DTEL-IX
export:         to AS31210 announce AS-IU-DTEL-IX
import:         from AS43748 action pref=50; accept AS43748
export:         to AS43748 announce AS-IU-CL
import:         from AS44461 action pref=50; accept AS44461
export:         to AS44461 announce AS-IU-CL
import:         from AS39810 action pref=50; accept AS-WICOM
export:         to AS39810 announce AS-IU-CL
import:         from AS47517 action pref=50; accept AS-CSSUZ
export:         to AS47517 announce AS-IU-CL
import:         from AS43266 action pref=50; accept AS43266
export:         to AS43266 announce AS25143
import:         from AS43110 action pref=200; accept ANY
export:         to AS43110 announce AS-IU
import:         from AS3326 action pref=200; accept ANY
export:         to AS3326 announce AS-IU
import:         from AS9002 action pref=200; accept ANY
export:         to AS9002 announce AS-IU
import:         from AS28917 action pref=200; accept ANY
export:         to AS28917 announce AS-IU
import:         from AS29076 action pref=200; accept ANY
export:         to AS29076 announce AS-IU
import:         from AS56439 action pref=50; accept AS56439
export:         to AS56439 announce ANY
import:         from AS202879 action pref=50; accept AS202879
export:         to AS202879 announce ANY
remarks:        ===============================
remarks:        Community attributes (Kyiv only)
remarks:        ---------------------------------------------
remarks:        25143:111 - anounces to uplinks
remarks:        25143:222 - anounces to uaix
remarks:        25143:333 - anounces to uplinks+uaix
remarks:        25143:444 - peering (not advertise)
remarks:        ================================
admin-c:        OO76-RIPE
tech-c:         AS2777-RIPE
org:            ORG-IU9-RIPE
status:         ASSIGNED
mnt-by:         IU-MNT
mnt-by:         RIPE-NCC-END-MNT
created:        2002-08-07T10:48:28Z
last-modified:  2022-03-10T13:18:49Z
source:         RIPE # Filtered
sponsoring-org: ORG-ST6-RIPE

organisation:   ORG-IU9-RIPE
org-name:       Company "Zagalni Merezhi" Ltd
country:        UA
org-type:       Other
address:        79059, Ukraine, Lviv, Getmana Mazepy 26, of 103
abuse-c:        AR21324-RIPE
mnt-ref:        IU-MNT
mnt-ref:        GENERAL-NETWORKS-MNT
mnt-by:         IU-MNT
mnt-by:         GENERAL-NETWORKS-MNT
admin-c:        OO76-RIPE
tech-c:         AS2777-RIPE
created:        2007-12-06T17:26:25Z
last-modified:  2022-12-01T16:32:02Z
source:         RIPE # Filtered

person:         Andriy Savkin
address:        Internet Ukraine Ltd.
address:        Naukova str. 5
address:        Lviv, Ukraine
phone:          +380 32 2540002
fax-no:         +380 32 2540022
nic-hdl:        AS2777-RIPE
mnt-by:         IU-MNT
created:        2002-07-04T10:03:03Z
last-modified:  2007-07-25T14:18:02Z
source:         RIPE # Filtered

person:         Ovsyannikov Oleg
address:        Internet Ukraine
address:        Naukova 5
address:        Lviv, Ukraine
phone:          +380 32 2540007
fax-no:         +380 32 2540022
nic-hdl:        OO76-RIPE
mnt-by:         AS3255-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2009-10-09T14:44:45Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.113.2 (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