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.
009555
009664
019246
019667
027122
037114
038477
060406
066110
071065
077014
078203
080117
093365
100657
103028
105412
107195
108789
115846
148371
152048
174072
185061
198020
200587
200892
201001
207851
208093
212410
220056
221275
232350
235434
235435
235516
257111
282667
282821
295198
305003
306424
311691
329001
330235
330718
330825
331683
332132
333467
333831
337154
372215
381555
402274
402472
441425
441456
443068
450120
452221
452275
452305
452387
452522
454152
454434
455001
480019
489434
490695
490713
491114
492125
494250
495157
551100
553056
553634
553933
554074
570109
571018
600114
600993
601136
605015
613128
614015
662587
666370
672409
681002
730128
731379
731410
731462
731574
738004
740497
741387
741576
741623
741737
744092
752379
762032
770108
771073
782161
802444
840623
847067
853282
900544
901720
901921
907452
914017
915603
920001
921465
921711
924276
926488
927890
931682
941813
968541
974004
980666
981602
981985
982515
992673
995530
997115
— Product Information Requirements, Mail Entry and Payment Technology, 5-5-22