People who know me, know that I'm 1. into domain names (owning quite some .co.za them, not only weather.co.za, (fly-)nationwide.co.za and runner.co.za and 2. into stats so I wanted to share some findings that I found to be pretty interesting.
Previous stats on SA webhosting marketshare had a serious flaw: it covered only 70,000 COM, NET, ORG, BIZ, INFO domains, that were hosted in South Africa while my research covers all 643,453 .co.za domain names, that are registered as of June 1st, 2011. My research does also include .co.za domains hosted overseas, as many clients avoid local companies and use cheap international webhosting companies with unlimited bandwidth offerings.
I published the full list of the 50 biggest domain hosting companies / nameservers on http://randolf.jorberg.com/web-hosting-south-africa/ and I intend to update it regularly.
Methodology: This research is based on the number of .co.za domains registered to your nameservers. If you are a reseller or you are using someone elses nameservers I have no way of finding out about you. While my research covered the 100 most frequently used nameservers, I might have missed some nameservers from companies whose aggregated numbers would've made it to the list. I found companies with up to five nameserver-sets but I can't guarantee completeness of my current list. I ask companies or clients who notice that there's a discrepancy to their own count that you contact me and I'll update the data ASAP.