If you are using any of the real-time integrations available to merchants (including inventory, shipping and tax, and order delivery), Yahoo! servers make calls to your secure web server. If you are currently using a firewall configuration that requires white-listing the IP ranges of Yahoo! servers involved in the real-time integration, you will need to update this list to reflect the following addresses:

66.218.72.0/24 *new, effective February 19, 2013
98.139.190.128/25 *new, effective February 19, 2013
67.195.95.0/23 *new, effective February 19, 2013
98.139.116.0/22 *new, effective February 19, 2013
216.252.126.0/24
68.180.210.0/23
68.180.222.0/25
209.191.67.0/25
216.252.96.0/19
216.39.58.16/28
66.94.237.176/28
209.131.41.32/27
209.191.112.64/27
209.191.66.0/24
216.136.224.0/22
66.163.168.0/22
66.163.172.0/22

If you do not add these IP addresses to your white-list, posts from these servers may be rejected by your firewall which has the following implications depending on the real-time integrations you are using:

• Order delivery may be delayed until Yahoo! resends orders from an IP address appearing on the white-list. (Your administrator may be receiving email communication errors).
• Orders will be rejected if using real-time inventory calls and you have set to reject orders when the server is unreachable.
• Orders will not have shipping and tax charges added if using the real-time tax and shipping integration and your server is not set to accept calls from the IP ranges listed above. (If setup, your administrator may be receiving email communication errors).

See Also

• Real-Time Delivery of Your Orders to Your Secure Web Server
• Real Time Interface to External Tax & Shipping Calculation System
• Using the Real-Time Inventory Feature