Thread:Merrystar/@comment-4391600-20151205103448/@comment--20151205105824

Of course. When you go to block a user there's a box that says "Automatically block the last IP address used by this user, and any subsequent IP addresses they try to edit from" and you have the option of ticking it. When you blocked that user, the box must of been ticked and that prevents other possible accounts from that IP from editing.

You can see a short explanation on IP blocking here at number 4.

So yes you're safe. If you take a look at your block list you can see the auto-block and see that you're the "blocking admin" with your name :)