Thanks for the reply. In case anyone wants to know who is using
woocommerce AIM, I have contacted the developer and this is his reponse:
The Authorize.net gateway doesn't use direct IPs so your gateway will
continue to function after September 30th :...
Is their a tutorial or some more information on how to check if my
website is using this IP? Im using Woocommerce with Authorize AIM.
Thanks in advanced for the help!