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.
008590
009413
009909
016846
018008
018544
021909
022906
029101
029479
029643
031070
034640
038609
044002
067197
070043
093458
100226
103281
108956
112070
112148
117604
119177
208562
208623
208679
210272
272354
274160
282963
301418
303101
338017
372505
470016
480049
483990
486328
490714
503007
531317
531358
531525
531613
532467
537199
551008
554236
605640
641814
743090
747016
755007
871028
895130
904110
914115
915001
924478
932009
940191
954012
958113
958402
958952
980381
980742
982297
995126
995342
995374
998012
— Product Information Requirements, Mail Entry and Payment Technology, 2-10-22