Your public IP probably isn't static, you would know if it was as you would be paying more of it, plus I'm sure AOL doesn't do statics for domestic use.
Your computer's IP may well be static in the 192.168.x.x range, but this isn't a public address.
Your public address is in the range 172.215.x.x.
If you really want to run your site have you looked at
http://www.no-ip.com/ may help you get around the dynamic public address.