i have a listing for Tanzania but nothing on the others...this might save you some work

193.220.80.0 - 193.220.80.255 (INTAFRICA) Internet Africa Ltd; Dar es Salaam; Tanzania; TZ
193.220.81.0 - 193.220.81.255 (DATELNET-COM) DATEL TANZANIA LTD; DAR ES SALAAM; TZ
193.220.82.0 - 193.220.83.191 (CATS-NET) Internet Service Provider in Dar es Salaam, Tanzania; TZ
193.220.84.0 - 193.220.84.255 (RAHA) Star Telecom Ltd; Dar Es Salaam; Tanzania; TZ
193.220.85.0 - 193.220.85.255 (AFRICAONLINE-TZ) Africa Online (Tanzania); Dar Es Salaam; TZ
193.220.86.0 - 193.220.86.127 (JRELECT-BLK1-TZ) JR Electronics Ltd; Arusha and Kilimanjaro, Tanzania; TZ
193.220.88.0 - 193.220.88.255 (DATELNET-COM-MWANZA) Mwanza POP; Mwanza, Tanzania; TZ
193.220.90.0 - 193.220.90.127 (CYBERNET-CO-TZ) Arusha POP; Arusha; TZ
193.220.91.0 - 193.220.91.255 (HABARI-CO-TZ) Arusha Node Marie; Arusha; TZ
194.51.134.0 - 194.51.134.255 (FR-FCR) FCR - TANZANIE; FRANCE CABLE ET RADIO; TZ
195.229.11.0 - 195.229.11.255 (ZANTELNET-EMIRNET) Network provider to ISPs located at Zanzibar.; TZ
195.229.5.0 - 195.229.5.127 (ZANZINET-DOM) Zanzibar's Internet Service Provider; Mazrui Building,Zanzibar,Tanzania; TZ
195.229.5.128 - 195.229.5.255 (ZANTELNET-EMIRNET) Network provider to ISPs located at Zanzibar; P.O.Box 3459, Zanzibar, Tanzania; TZ
195.229.8.0 - 195.229.8.127 (ZANTELNET-EMIRNET) Network provider to ISPs located at Zanzibar; P.O.Box 3459, Zanzibar, Tanzania; TZ
195.229.8.128 - 195.229.8.255 (ZANTELNET-EMIRNET) Network provider to ISPs located at Zanzibar.; TZ
195.6.54.0 - 195.6.54.255 (FR-FCR) FCR - TANZANIE; FRANCE CABLE ET RADIO; Sodetel, Lebanon; TZ