% 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 '196.216.156.0 - 196.216.159.255'

% No abuse contact registered for 196.216.156.0 - 196.216.159.255

inetnum:        196.216.156.0 - 196.216.159.255
netname:        AFDB-NET
descr:          African Development Bank
country:        TN
org:            ORG-ADBA1-AFRINIC
admin-c:        CBA1-AFRINIC
tech-c:         CBA1-AFRINIC
status:         ASSIGNED PI
mnt-by:         AFRINIC-HM-MNT
mnt-lower:      AfDBMNT-AFRINIC
mnt-domains:    AfDBMNT-AFRINIC
source:         AFRINIC # Filtered
parent:         196.0.0.0 - 196.255.255.255

organisation:   ORG-ADBA1-AFRINIC
org-name:       African Development Bank - AFDB
org-type:       EU-PI
country:        TN
address:        Avenue du Ghana
address:        Tunis Belvedere
address:        Tunis
phone:          tel:+216-71-103-450
fax-no:         tel:+216-71-830-506
admin-c:        CBA1-AFRINIC
tech-c:         CBA1-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        AfDBMNT-AFRINIC
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

person:         Coulibaly Bakary Adama
address:        Bp 323-1002 Tunis Tunisia
phone:          tel:+216-71-102-637
fax-no:         tel:+216-71-830-506
nic-hdl:        CBA1-AFRINIC
remarks:
mnt-by:         GENERATED-WFZHLRWSNS84K8EDGTLCP0VTV1ECEZKO-MNT
source:         AFRINIC # Filtered