% 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 '31.13.168.0 - 31.13.175.255'

% Abuse contact for '31.13.168.0 - 31.13.175.255' is 'markus.ryll@demando.de'

inetnum:        31.13.168.0 - 31.13.175.255
netname:        DE-TWKKAISERSLAUTERN-20110419
country:        DE
org:            ORG-TTWK2-RIPE
admin-c:        PG5951-RIPE
admin-c:        MR9863-RIPE
tech-c:         PG5951-RIPE
tech-c:         MR9863-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-TWK-LIR
mnt-lower:      MNT-TWK-L
mnt-lower:      MNT-TWK-LIR
mnt-routes:     MNT-TWK-R
created:        2011-04-19T10:02:29Z
last-modified:  2017-07-24T12:23:10Z
source:         RIPE # Filtered

organisation:   ORG-TTWK2-RIPE
org-name:       DEMANDO GmbH
country:        DE
org-type:       LIR
address:        Europaallee 10
address:        67657
address:        Kaiserslautern
address:        GERMANY
phone:          +4963180016000
fax-no:         +4963180016110
abuse-c:        AR14765-RIPE
admin-c:        MR9863-RIPE
admin-c:        PG5951-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-TWK-L
mnt-ref:        MNT-TWK-LIR
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-TWK-LIR
created:        2011-02-16T11:04:02Z
last-modified:  2020-12-16T12:25:44Z
source:         RIPE # Filtered

person:         Markus Ryll
address:        Demando GmbH
address:        Europaallee 10
address:        D-67657 Kaiserslautern
phone:          +496318001-6000
nic-hdl:        MR9863-RIPE
mnt-by:         MNT-TWK-LIR
created:        2009-07-07T09:24:39Z
last-modified:  2012-08-22T10:22:33Z
source:         RIPE # Filtered

person:         Patrick Goettel
address:        Europaallee 10
address:        D-67657 Kaiserslautern
mnt-by:         TWK-MNT
phone:          +496318001-6000
nic-hdl:        PG5951-RIPE
created:        2009-07-08T08:40:53Z
last-modified:  2018-09-03T19:40:52Z
source:         RIPE # Filtered

% Information related to '31.13.170.0/23AS196819'

route:          31.13.170.0/23
descr:          DEM-NET-170
origin:         AS196819
mnt-by:         MNT-TWK-LIR
mnt-routes:     MNT-TWK-R
created:        2013-01-22T08:07:52Z
last-modified:  2013-01-22T08:07:52Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112.1 (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