Provide this listing to Contract Postal Units and acceptance clerks in non-POS locations without intranet access to validate a USPS Corporate Account (USPSCA) number online. For all other locations, online USPSCA validation is preferred. This list supersedes all previous notices, which you must recycle.
Acceptance clerks must not accept Priority Mail Express® shipments bearing an invalid USPSCA number in the “Payment by Account” or “Agreement Number” section of the label or form.
Note: The first 6 digits of a 9-digit Custom Designed Service and Next Day Pickup Agreement make up the Corporate Account Number.
005846
008590
009413
009909
016846
018544
021909
022906
029479
034640
038609
044002
067197
070043
091934
097527
100226
100863
103281
108956
112070
112148
117604
119177
124078
208428
208562
208623
208679
210272
272354
274160
301418
303101
314281
338017
372505
445158
470016
480049
480082
486328
503007
531317
537199
551008
551250
554236
605640
641814
740441
743090
755007
871028
895130
904110
914115
915001
917623
924478
928260
941444
950700
954012
958113
958402
958952
970233
971072
980381
980742
982297
995126
995342
995374
— Product Information Requirements, Mail Entry and Payment Technology, 1-27-22