The Ontrac tracking number format is usually comprised of 1 alphabetic character and 14 numeric characters, for example:
D + 14 digits
C + 14 digits
OnTrac tracking number example:
OnTrac is a logistics company in the Western United States. Founded in 1991, it now has served in eight states in America: Arizona, Nevada, Oregon, Washington, Utah, Colorado, Idaho, and its headquarter, California, which allows quick delivery for 65 million consumers without paying extra fees as a more affordable alternative to the National Carriers' Ground service.
You can also track your OnTrac tracking number on trackingmore.com