I’m coding something, and for the first time ever, i decide to look at the GCF command (no one does),

I did! And found some website names, including “friend”’s site, to detect “who has blocked you” (as everyone should know, that doesn’t work since 2004 - now it just tells missing contacts in reverse list)

Also googled it later, and found that amsn includes a script to display that.