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
006376
007032
007379
008028
008436
008439
008590
008718
009644
012400
019495
021909
030469
039005
041175
047213
064973
067197
068597
077013
091934
094518
097527
100226
100863
105209
105699
105968
108956
117369
124078
127102
130334
133024
146570
152089
171353
193571
207842
208428
208623
210272
210430
240050
301418
303101
305003
314281
334900
441629
445158
460161
470016
471010
480082
486328
495065
495361
503007
514006
548003
551250
553486
570177
571127
597544
600023
600162
600177
600247
600586
600964
601000
601013
601027
601047
601071
601073
601074
601078
601092
601101
601114
601124
601129
601131
601135
601137
601147
601151
601174
601176
601177
601199
601221
601231
601247
601249
601251
601253
601256
601261
601280
601296
601303
601313
601314
601322
601331
601363
601384
601385
601428
601433
601449
601460
601478
601485
601487
601488
601499
601523
601530
601545
601564
601566
601575
601580
601581
601594
601619
601624
601668
601670
601671
601674
601676
601681
601685
601692
601719
601721
601727
601731
601767
601768
601773
601788
601803
601854
601857
601858
601862
601870
601900
601903
601916
601928
601945
601985
601989
602066
602752
602789
602984
603027
603043
603047
603060
603062
603067
603077
603080
603082
603097
603106
603116
603117
603118
603141
603152
603176
603177
603184
603193
603200
603205
603234
611102
740441
741228
751008
761636
771007
771629
826012
851023
853059
911127
915708
917689
922031
925083
928260
928334
932533
933001
933007
941444
941756
948799
950700
950995
951133
951371
958113
958135
971016
971072
971125
971139
972982
980225
980259
982004
982685
983114
989046
992697
995374
995581
997128
998008
— Product Information Requirements, Mail Entry and Payment Technology, 12-2-21