US government owned postal service for delivery within USA.
https://usps.com
Shipping Providers
Get access to data on 542,912 websites USPS Customers. We know of 182,910 live websites using USPS and an additional 360,002 sites that used USPS historically and 155,716 websites in the United States.
USPS websites that are also using other technologies.
Get a list of 542,912 websites using USPS which includes location information, hosting data, contact details, 182,910 currently live websites and an additional 209,259 domains that redirect to sites in this list. 360,002 sites that used this technology previouslyand 155,716 websites in the United States currently using USPS.
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