– because they do not have the allowance from the copyright holders to their website in your place.Its easy to bypass that if access to 321is blocked by your Internet Service Provider with DNS .
A VPN Provider is great for deblocking 321sexchat.com!
Also, you need to choose a Virtual Private Network which doesnt keep any logfiles about your online action, the IP you used the Net and the timestamps when you connected to the VPN provider.
More info on the way it functions and what DNS is is also found on that website.
If switching your DNS didnt work out – there tend to be more options.
Or 321gets filtered in order of your employers specialized blocking firewall .