Thinking of blocking N

I've written about this before but hope I can get some advice on a new strategy I'm thinking about. My ex N (now almost 8 months NC) only has one resource to check up on me, my company website. I check the web stats and see him there often. I'm considering filing a harrassment restraining order, but on the fence about that. It could ruin his career and he could retaliate (physically) against me ro my pet. So, I'm wondering if I should ask our IT guy to block the IP address that he's using to come into our site. Of course, he can get in other ways...use a proxy site or whatever...so it wouldn't keep him from looking. BUT it would send him a message that he's been discovered and my company (and me) wants him to stop. Kind of like changing your phone number (as I've done)...people have ways of finding out your phone number. But it sends a message: I don't want to talk to you. Would blocking his IP send a message like that or would it be giving him attention (ie, letting him know I noticed him there and it bothers me). You know, negative attention...which they will take in lieu of adoration attention. I've held off on blocking the IP because I thought it would be better to let him think I don't see him there or don't care. And I hoped he would have given up by now, but apparently he hasn't.