I've had quite a bit of time today to play around and run some tests.
With the help of some public looking glasses, I was able to run a few traceroutes from different CPT based routers.
Used looking glasses from the following companies: Rocketnet, DataKeepers, MikroTik and Seacom.
Also used my ec2 instance to see what amazon's routing was like as well.
Out of all these traceroutes, Seacom's one was the only one that had a vodacom path in it. All the others were similar to each other and just stayed clear of the vodacom based path.
RocketNet traceroute:
View attachment 1606970
DataKeepers traceroute:
View attachment 1606972
MikroTik traceroute:
View attachment 1606974
Seacom traceroute:
View attachment 1606976
Besides RocketNet, all these are just businesses so it isn't indicative of the routing that most consumers get.
Even
@cavedog 's traceroute from that cptspeedtest.afrihost was similar so I do really wonder if it's just cool ideas customers that are facing this issue or not.