% 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 '196.202.139.0 - 196.202.139.255'

% No abuse contact registered for 196.202.139.0 - 196.202.139.255

inetnum:        196.202.139.0 - 196.202.139.255
netname:        Sudatel-IPBB
descr:          Internet customer
country:        SD
admin-c:        SAC1-AFRINIC
tech-c:         STC1-AFRINIC
status:         ASSIGNED PA
mnt-by:         MNT-HIBA
mnt-by:         SUDATEL-MNT
source:         AFRINIC # Filtered
parent:         196.202.128.0 - 196.202.159.255

role:           Sudatel Admin Contact
address:        Sudatel Telecom Co. Ltd.
address:        P.O.Box 11155
address:        Khartoum
address:        SUDAN
phone:          tel:+249-1883797400
admin-c:        IEGH1-AFRINIC
tech-c:         RAA2-AFRINIC
nic-hdl:        SAC1-AFRINIC
mnt-by:         SUDATEL-MNT
source:         AFRINIC # Filtered

role:           Sudatel Technical Contact
address:        Sudatel Telecom Co. Ltd.
address:        P.O.Box 11155
address:        Khartoum
address:        SUDAN
phone:          tel:+249-1883797400
admin-c:        IEGH1-AFRINIC
tech-c:         RAA2-AFRINIC
nic-hdl:        STC1-AFRINIC
mnt-by:         SUDATEL-MNT
source:         AFRINIC # Filtered

% Information related to '196.202.136.0/21AS15706'

route:          196.202.136.0/21
descr:          Sudatel-IP
origin:         AS15706
mnt-by:         Sudatel-mnt
source:         AFRINIC # Filtered