you are a dialup user, you could have been assigned an IP address someone else used to exceed the limit. You may be able to hang up your connection and redial to get a new IP address.
If you are a commercial/business user, please consider asking your company or organization to license an ad-free version of the site (with practically no daily limits) for a reasonable fee based on the number of users with access to the ad-free version of the site.
Please contact us and we can usually increase this daily limit for you.
Note: You could exceed the daily limit if your browser is set to browse this site offline. Also, if you are using the Reverse Lookup search option,