% 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 '193.56.16.0 - 193.56.19.255'

% Abuse contact for '193.56.16.0 - 193.56.19.255' is 'internetabuse@openfiber.it'

inetnum:        193.56.16.0 - 193.56.19.255
netname:        IT-OPENFIBER-20180913
country:        IT
org:            ORG-OFS5-RIPE
admin-c:        GF12067-RIPE
tech-c:         GF12067-RIPE
status:         ALLOCATED PA
mnt-by:         mnt-it-openfiber-1
mnt-by:         RIPE-NCC-HM-MNT
created:        2020-10-21T08:43:08Z
last-modified:  2022-10-05T10:17:07Z
source:         RIPE

organisation:   ORG-OFS5-RIPE
org-name:       Open Fiber S.P.A.
country:        IT
org-type:       LIR
address:        Via Laurentina 449
address:        00142
address:        Rome
address:        ITALY
phone:          +390683222240
admin-c:        GF12067-RIPE
tech-c:         GDP714-RIPE
tech-c:         GF12067-RIPE
abuse-c:        AR51570-RIPE
mnt-ref:        mnt-it-openfiber-1
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         mnt-it-openfiber-1
created:        2019-03-20T11:20:48Z
last-modified:  2022-10-03T12:27:49Z
source:         RIPE # Filtered

person:         Domenico Palmiero
address:        domenico.palmiero@openfiber.it
phone:          +39 3406826509
nic-hdl:        GF12067-RIPE
mnt-by:         mnt-it-openfiber-1
created:        2020-04-30T16:35:26Z
last-modified:  2023-06-28T13:32:35Z
source:         RIPE
org:            ORG-OFS5-RIPE

% Information related to '193.56.16.0/22AS210218'

route:          193.56.16.0/22
origin:         AS210218
mnt-by:         mnt-it-openfiber-1
created:        2020-11-13T11:16:20Z
last-modified:  2020-11-13T11:16:20Z
source:         RIPE

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