% APNIC found the following authoritative answer from: whois.afrinic.net

% This is the AfriNIC Whois server.
% The AFRINIC whois database is subject to  the following terms of Use. See https://afrinic.net/whois/terms

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '41.244.0.0 - 41.244.255.255'

% No abuse contact registered for 41.244.0.0 - 41.244.255.255

inetnum:        41.244.0.0 - 41.244.255.255
netname:        VIETTEL-CMv4-I
descr:          VIETTEL CAMEROUN SARL
country:        CM
org:            ORG-VCS1-AFRINIC
admin-c:        MS107-AFRINIC
tech-c:         NLF1-AFRINIC
status:         ALLOCATED PA
remarks:        * * * * * * * * * * * * * * * * * * * * * * * * *
remarks:        *                                               *
remarks:        *      This resource will be reclaimed and      *
remarks:        *      returned to the free pool by AFRINIC     *
remarks:        *           on the 26th December 2022.          *
remarks:        *                                               *
remarks:        *     For more information, please contact      *
remarks:        *       AFRINIC at hostmaster@afrinic.net       *
remarks:        *                                               *
remarks:        * * * * * * * * * * * * * * * * * * * * * * * * *
mnt-by:         AFRINIC-HM-MNT
mnt-lower:      VIETTELCM-MNT
mnt-domains:    VIETTELCM-MNT
source:         AFRINIC # Filtered
parent:         41.0.0.0 - 41.255.255.255

organisation:   ORG-VCS1-AFRINIC
org-name:       VIETTEL CAMEROUN SARL
org-type:       LIR
country:        CM
address:        BP 87
address:        Yaounde
phone:          tel:+237-6-62-52-81-81
phone:          tel:+237-6-65-00-00-03
phone:          tel:+237-6-65-00-00-16
phone:          tel:+237-6-61-00-00-83
phone:          tel:+237-6-61-00-05-08
phone:          tel:+237-6-61-00-00-80
admin-c:        MS107-AFRINIC
tech-c:         NLF1-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        VIETTELCM-MNT
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

person:         MOUYIEKOUOP Salifou
address:        Yaounde Cameroon
phone:          tel:+237-6-65-00-00-16
nic-hdl:        MS107-AFRINIC
mnt-by:         GENERATED-8P4X66ZFE9L84IL4AEIQEMFVJQ2QCT6V-MNT
source:         AFRINIC # Filtered

person:         NKENG Leon Forcha
nic-hdl:        NLF1-AFRINIC
address:        Yaounde Cameroon
address:        Yaounde
address:        Other
phone:          tel:+237-6-61-00-00-83
mnt-by:         GENERATED-IKD0UUUF5WZPHWE08TPJVL9ZJXRAFPBD-MNT
source:         AFRINIC # Filtered

% Information related to '41.244.0.0/16AS37620'

route:          41.244.0.0/16
descr:          VIETTEL CAMEROUN SARL
origin:         AS37620
mnt-by:         VIETTELCM-MNT
source:         AFRINIC # Filtered

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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
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-d	Associated reverse domain