% 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 '102.140.128.0 - 102.140.159.255'

% No abuse contact registered for 102.140.128.0 - 102.140.159.255

inetnum:        102.140.128.0 - 102.140.159.255
netname:        Gamtel-v4
descr:          Gamtel Co.
country:        GM
org:            ORG-GC5-AFRINIC
admin-c:        BMS2-AFRINIC
admin-c:        SS68-AFRINIC
tech-c:         SJ25-AFRINIC
status:         ALLOCATED PA
mnt-by:         AFRINIC-HM-MNT
mnt-lower:      GAMTEL-MNTNER
mnt-domains:    GAMTEL-MNTNER
source:         AFRINIC # Filtered
parent:         102.0.0.0 - 102.255.255.255

organisation:   ORG-GC5-AFRINIC
org-name:       Gamtel Co.
org-type:       LIR
country:        GM
address:        Gambia Telecommunications Company Ltd
address:        Gamtel House
address:        P.O. Box 387
address:        Banjul
address:        THE GAMBIA, WEST AFRICA
address:        Banjul
phone:          tel:+220-422-9999
phone:          tel:+220-983-9466
phone:          tel:+220-983-4169
phone:          tel:+220-996-5665
phone:          tel:+220-996-7967
fax-no:         tel:+220-439-3971
admin-c:        SS68-AFRINIC
admin-c:        BMS2-AFRINIC
tech-c:         SJ25-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        GAMTEL-MNTNER
mnt-by:         AFRINIC-HM-MNT
remarks:        data has been transferred from RIPE Whois Database 20050221
source:         AFRINIC # Filtered

person:         Baboucarr M. Saho
address:        Gamtel
phone:          tel:+220-422-9999
nic-hdl:        BMS2-AFRINIC
mnt-by:         GENERATED-LOFMLJJSSVGCXLEZ9GACER3GCQCQKLZG-MNT
source:         AFRINIC # Filtered

person:         Saloum Jimbara
nic-hdl:        SJ25-AFRINIC
address:        Gambia Telecommunications Company Ltd
address:        Gamtel House
address:        P.O. Box 387
address:        THE GAMBIA, WEST AFRICA
address:        Banjul
address:        Gambia
address:        Banjul
address:        Gambia (the)
phone:          tel:+220-996-7967
mnt-by:         GENERATED-R596JAWLALUMEXVRXVFC3C80P4Z1GWPD-MNT
source:         AFRINIC # Filtered

person:         Seedy Saho
nic-hdl:        SS68-AFRINIC
address:        Gambia Telecommunications Company Ltd 
address:        Gamtel House, P.O. Box 387, Banjul 
address:        THE GAMBIA, WEST AFRICA
address:        Gambia
address:        Banjul
address:        Gambia
phone:          tel:+220-983-4169
phone:          tel:+220-439-1372
mnt-by:         GENERATED-IGHJHBTGMUAXS8XYK61XGQLZDYWPVNWX-MNT
source:         AFRINIC # Filtered

% Information related to '102.140.128.0/19AS25250'

route:          102.140.128.0/19
descr:          GAMTEL ROUTE OBJECT
origin:         AS25250
mnt-by:         GAMTEL-MNTNER
source:         AFRINIC # Filtered