How can I Check if my IP Address is Blacklisted?

How can I Check if my IP Address is Blacklisted?

From time to time your IP address may get blacklisted if your mail authentication is set wrong or your IP address is dynamic (ie: or shared).
If your a business we always recommend you have a dedicated (or static) IP address as this will alleviate most issues.
You could ask your ISP to do it?
Firstly, you need to determine if you have a dedicated (static) IP address or a dynamic IP (ie: shared & it keeps changing when you reset your router).
Secondly, go here: http://mxtoolbox.com/blacklists.aspx and add your IP address to see if it is blacklisted.
If YES - once done, click on the DETAILS button, scroll to the bottom of page and copy REASON FOR LISTING link into your browser.
IMPORTANT: Fix the reason for the listing BEFORE delisting.
Each blacklisting service has their own reasons and ways to de-list so once you get there look around to find the De-list.