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.
009413
009909
016846
018008
018544
022906
029101
029479
029643
031070
034640
038609
044009
056022
070043
093458
098680
103281
112070
112148
117604
119177
152918
153034
208679
272354
282963
330718
338017
480049
483990
486328
490714
531317
531358
531525
531613
532467
537199
551008
553634
554236
605640
641814
701069
730128
731410
731462
731574
738004
740497
741387
741576
741623
741737
743090
744092
747016
770108
871028
895130
904110
914115
915001
924478
932009
940191
958402
958952
980381
980742
982297
995126
995342
995374
997115
998012
— Product Information Requirements, Mail Entry and Payment Technology, 2-24-22