Couldn't get AF at all last night except through my VPN. However this morning I can access it via cellular 4G with China Unicom. However still inaccessible via the home network, which is China Telecom cable Internet. And this is both using a browser and Tapatalk. When a site is blocked by the GFW, usually it either doesn't load at all, nothing is responding, AF is doing this, or there's an immediate connection reset and "page cannot be displayed" message, Facebook, Google, Amnesty International, etc. does this.
I'm sure if I was IP address banned by AF server, it would tell me wouldn't it. That's what some CloudFlare sites do, basically any IP address that originates from China, and sometimes Russia are automatically blacklisted, because of hacking attempts, spamming, etc.
I can't really use a VPN all the time, because it causes problems for the Chinese apps I use regularly, like Wechat can be very slow when it's in China, pinging the servers in China, while routed via the United States or Canada. Same with streaming music and videos from Chinese sites, things like QQ Music and Baidu Music..."Sorry, this service is only available in China", when I'm using the VPN.