I don't know how iBurst in Cape Town configures their routing tables, But the last couple of weeks the traceroutes showed that I receive International data via globalconnex(IntelSAT) and send my requests through Verizon.
Today it changes between Verizon and Globalconnex depending on the location from where I do the traceroute.
I also noticed that some of iBurst's Edge routers that are connected to the Internet does not filter RFC1918.
Last time I checked I only manage to get 29KB/s international and up to 118KB/s local.
GBM, I was busy downloading at the time and it dropped to capped speeds, since then I changed IP a few times but still capped.
According to BWMeter I'd downloaded just over my 3GB which is acceptable.
This is the way it's always gone into capped mode for me except for the times I got COD during downloading.
It surprises me, as I got capped when rebooting my connection. I downloaded about 3.35GB, which is way over my limit, yet didn't get throttled immediately.
GBM, it's not the same for all users, for example only some get the COD where others who have been with iBurst just as long have never experienced that problem.
Maybe Ed can either confirm what I said or explain why some only get capped after rebooting their modems.