% 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 'AS31620 - AS31743'

as-block:       AS31620 - AS31743
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:        2018-11-22T15:27:33Z
last-modified:  2018-11-22T15:27:33Z
source:         RIPE

% Information related to 'AS31628'

% Abuse contact for 'AS31628' is 'ripe@robbo.pl'

aut-num:        AS31628
as-name:        ROBBO-AS
import:         from AS50606 accept ANY
export:         to AS50606 announce AS31628
import:         from AS201434 accept any
export:         to AS201434 announce AS31628
org:            ORG-RC5-RIPE
admin-c:        RS3845-RIPE
admin-c:        AJ2803-RIPE
tech-c:         RS3845-RIPE
tech-c:         AJ2803-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ATMAN-MNT
mnt-by:         ROBBO-MNT
created:        2004-06-25T12:47:11Z
last-modified:  2018-09-04T10:03:23Z
source:         RIPE
sponsoring-org: ORG-AS25-RIPE

organisation:   ORG-RC5-RIPE
org-name:       Getfiber Sp. z o.o.
country:        PL
org-type:       OTHER
address:        ul. Albatrosow 24B
address:        05-500 Piaseczno
address:        Poland
phone:          +48 22 701 87 71
abuse-c:        AR26759-RIPE
admin-c:        RS3845-RIPE
admin-c:        AJ2803-RIPE
tech-c:         RS3845-RIPE
tech-c:         AJ2803-RIPE
mnt-ref:        ATMAN-MNT
mnt-by:         ATMAN-MNT
created:        2004-04-23T10:55:54Z
last-modified:  2022-12-01T16:44:56Z
source:         RIPE # Filtered

person:         Adam Jankowiak
address:        Robbo Computer
address:        ul. Albartosow 24b
address:        05-500 Piaseczno
phone:          +48515069954
phone:          +48222111666
nic-hdl:        AJ2803-RIPE
mnt-by:         ATMAN-MNT
created:        2012-06-15T12:17:33Z
last-modified:  2012-06-15T12:17:33Z
source:         RIPE # Filtered

person:         Robert Szamota
address:        Robbo Computer
address:        ul. Albartosow 24b
address:        05-500 Piaseczno
phone:          +48222111666
nic-hdl:        RS3845-RIPE
mnt-by:         ATMAN-MNT
created:        2004-04-20T16:50:41Z
last-modified:  2013-03-15T14:57:20Z
source:         RIPE # Filtered

% 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