When I post from Venezuala (or some other countries) on my VPN I sometimes show up on flag boards as unidentified proxy. An IP check can ID me and my country, no fuckery's going on on my end. I have the following theories:
- Some shit is broken with the flags
- The system 8ch uses for the flags has lists of IPs or IP ranges owned and used solely for or by VPN companies or proxy providers
The second seems more likely, but I don't know if it's a standard thing they use or if it was coded for 8ch and is updated with their knowledge of VPNs. If this is the case I'd be sort of disappointed, but it's not identity revealing so don't much care either way.
Anyways, barring errors it's probably VPN/proxy users. Why it can't just show the country and also indicate it's a proxy (or just not bother indicating), I wouldn't know.