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.
005691
008176
010806
015810
018005
021177
021636
021774
022631
027188
033002
056013
070421
076080
077311
105324
107997
110398
113018
117097
124187
125228
152668
185066
223027
223281
326003
380180
441823
454436
473150
495078
537392
553006
554787
608032
708474
725044
752076
752118
754027
757072
811045
853411
853902
875121
901629
904532
921198
927981
931775
933181
941004
941516
959064
995022
995356
997170
— Product Information Requirements, Mail Entry and Payment Technology, 3-9-23
