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U.S. Postal Service shipping is unaccessable. New Web Tools


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Got this email and then noticed my USPS shipping calculations isnt working:


Over the Labor Day weekend the U.S. Postal Service changed the Web Tools IP

addressing scheme from a 164.x.x.x IP range to a 56.x.x.x IP range. As

communicated several weeks ago via email, all Web Tools users should be

using fully qualified Domain Names to avoid any Web Tools access

interruption due to the IP changes.


USPS will be restricting access to the old IP addresses over the next

several days with a permanent IP address retirement on Monday, September

15th,, 2003 To avoid a Web Tools service interruption, your company or your

ISP should refresh its DNS to reflect the new 56.x.x.x IP range.


If you have any questions, please contact the USPS Internet Customer Care

Center at [email protected] <mailto:[email protected]> .



The USPS Web Tools Team


Any info on what needs to be changed in osc to fix this?

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To All OS Commerce members,


I wanted to let you know that the fix is really nothing that you need to do in your coding of your shopping cart. The issue is based on your webhost's DNS entries. If they still point to the 164.x.x.x addresses, your website will not be hitting the correct servers.


We are working on having the DNS update be pushed through the internet more aggressivly, however at this time we do not have an ETA on when ISPs will refresh their DNS.


Thank you,



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  • 3 weeks later...

I don't think code edited is necessary. All I did is call USPS at 1-800-344-7779 (7:00AM to 11:00PM ET), have them switch my account from test server to production server. Then USPS shipping moduel works right the way! :D

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