yoafrica dont charge for local traffic, however as macdonald said, just because a site uses .co.zw, doesnt mean its actually hosted in zim - (eg, zimhosts.com uses servers in the uk)
TelOne also dont appear to be members of ZISPA and the Zimbabwe Internet Exchange (ZINX) so be careful about connecting to/from telone ip's as they very likely will go out of the country to get to a local IP
for example. this was a traceroute i did from my telone connection to a Liquid GPON connection in milton park which are only seperated by a 10 min drive:
1 firewall (192.168.31.254) 0.403 ms 0.201 ms 0.187 ms
2 * 0.129.0.0 (0.129.0.0) 31.426 ms 30.694 ms
3 * * *
4 if-1-1-0.core1.wyn-marseille.as6453.net (80.231.165.65) 203.185 ms 208.072 ms 205.892 ms
5 if-1-2-1-29.tcore2.wyn-marseille.as6453.net (80.231.200.21) 219.479 ms 232.920 ms 222.518 ms
6 if-9-2.tcore2.l78-london.as6453.net (80.231.200.14) 217.933 ms 224.981 ms 219.644 ms
7 vlan756.icore2.ldn-london.as6453.net (80.231.131.26) 334.385 ms * 222.321 ms
8 ae4.lon11.ip4.tinet.net (141.136.99.73) 221.664 ms 227.906 ms 221.334 ms
9 xe-9-0-1.lon10.ip4.tinet.net (89.149.180.85) 226.442 ms
xe-9-3-0.lon10.ip4.tinet.net (89.149.183.174) 243.816 ms
xe-8-2-1.lon10.ip4.tinet.net (89.149.183.182) 237.748 ms
10 liquidtelecom-gw.ip4.tinet.net (77.67.65.58) 216.920 ms 215.778 ms *
11 p1-jhb-pos8-2-1.liquidtelecom.net (46.17.232.25) 395.724 ms 396.532 ms 399.643 ms
12 p1-byo-g1-1-3.liquidtelecom.net (46.17.232.15) 415.189 ms 419.323 ms 417.085 ms
13 46.17.232.19 (46.17.232.19) 479.378 ms 421.465 ms 432.018 ms
14 46.17.232.249 (46.17.232.249) 430.317 ms 483.404 ms 427.753 ms
15 46.17.232.69 (46.17.232.69) 428.608 ms 437.938 ms 434.127 ms
16 46.17.232.70 (46.17.232.70) 430.260 ms 415.461 ms 448.539 ms
17 * * *
Yes thats right my traffic went like this:
Harare > Marseille > London > Jo'burg (SA) > Bullawayo (ZIM) > Harare
also be aware of sites like techzim.co.zw, classifieds.co.zw which are not even hosted locally if you visit them a lot (both of the above appear to be hosted in the US)