On what basis do you make that assumption?
It is still the internet, routing issues can and do occur. There is absolutely nothing in the configuration of my server(s) that would block anybody from any nation.
I'll alert my hosting provider to make sure they know about it just in case it's a novel thing and their monitoring didn't pick it up yet but it could easily be further upstream.
Or couldn't. I changed IP address and can now.
Many/most people have dynamic IP addresses, and I wonder if Jacques' provider has aggressively blocked addresses that have been abused in the recent past.
Anyway, the server is definitely 'open to all takers', nothing there that could cause this. Also, last Saturday ABN-AMRO (one of the bigger Dutch commercial banks) went offline for many hours due to a huge DDOS, this may be related but I never thought my lonely blog would be in the line of fire.