% 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 '212.38.0.0 - 212.38.3.127'

% Abuse contact for '212.38.0.0 - 212.38.3.127' is 'internet@infraserv.com'

inetnum:        212.38.0.0 - 212.38.3.127
netname:        Infraserv
descr:          Infraserv GmbH & CO. Hoechst KG
descr:          Industriepark Hoechst
descr:          D-65926 Frankfurt am Main
country:        DE
admin-c:        MK14960-RIPE
tech-c:         ISIT-RIPE
admin-c:        MS23993-RIPE
tech-c:         MS23993-RIPE
tech-c:         JD3019-RIPE
admin-c:        JD3019-RIPE
status:         ASSIGNED PA
mnt-by:         LIR-ISH
created:        1970-01-01T00:00:00Z
last-modified:  2022-08-15T08:15:31Z
source:         RIPE

role:           Infraserv Internet Team
address:        Infraserv GmbH & CO. Hoechst KG
address:        Industriepark Hoechst
address:        D-65926 Frankfurt am Main
address:        Germany
abuse-mailbox:  internet@infraserv.com
remarks:        trouble: In case of trouble mailto: internet@infraserv.com
admin-c:        JD3019-RIPE
admin-c:        MS23993-RIPE
tech-c:         JD3019-RIPE
tech-c:         MS23993-RIPE
nic-hdl:        ISIT-RIPE
mnt-by:         LIR-ISH
created:        1970-01-01T00:00:00Z
last-modified:  2022-08-15T08:01:44Z
source:         RIPE # Filtered

person:         Juergen Draak
address:        Infraserv GmbH & CO. Hoechst KG
address:        Industriepark Hoechst
address:        D-65926 Frankfurt am Main
address:        Germany
phone:          +49 69 305 18685
nic-hdl:        JD3019-RIPE
mnt-by:         LIR-ISH
created:        1970-01-01T00:00:00Z
last-modified:  2022-08-15T08:00:48Z
source:         RIPE # Filtered

person:         Manfred Klinkler
address:        Infraserv GmbH & Co. Hoechst KG
address:        Industriepark Hoechst
address:        D-65926 Frankfurt am Main
address:        Germany
phone:          +49 69 305 2699
nic-hdl:        MK14960-RIPE
mnt-by:         LIR-ISH
created:        2013-07-02T08:33:38Z
last-modified:  2013-07-02T08:33:38Z
source:         RIPE

person:         Michaela Sturm
address:        InfraServ GmbH & CO. Hoechst KG
address:        Industriepark Hoechst
address:        D-65926 Frankfurt am Main
address:        Germany
phone:          +49 69 305 14826
nic-hdl:        MS23993-RIPE
mnt-by:         LIR-ISH
created:        1970-01-01T00:00:00Z
last-modified:  2022-08-15T07:59:57Z
source:         RIPE # Filtered

% Information related to '212.38.0.0/19AS24639'

route:          212.38.0.0/19
descr:          Infraserv AS24639
origin:         AS24639
remarks:        Abuse reports to internet@infraserv.com
mnt-by:         LIR-ISH
created:        2002-05-16T07:44:05Z
last-modified:  2013-07-02T09:12:46Z
source:         RIPE # Filtered

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

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