- Valid formats for importer number
- U.S. importers
- Foreign importers
- Canadian Province codes
5106 data is entered as part of the customer record.
U.S. citizens should be identified by Social Security numbers and U.S.
corporations should be identified by Internal Revenue Service (IRS) numbers.
Customs assigned numbers are usually only assigned to foreign nationals and
companies without an IRS or Social Security number.
Note: CF5106 data must be on file with Customs in order to avoid an
error message during entry validation.
5106 data is sent to CBP from the 2nd screen of customer data.
Leave the IRS field blank to request a Customs Assigned Number for a foreign importer.
You can also request an existing Customs Assigned Number (answer N to the 1st question).
If a response to a 5106 request was previously received, you can send an update.
(Action code U instead of A.)
Valid formats for the Importer of Record Number are:
Note: In these codes, N = number and X = alphanumeric, YY = the
last two digits of the calendar year when the number is assigned, and DDPP =
the district/port code where the number is assigned.
- NN-NNNNNNNXX - IRS Number
- NNN-NN-NNNN - Social Security Number
- YYDDPP-NNNNN - Customs Assigned Number
Note: If the importer number is in IRS format, the last two-position
suffix (XX) cannot be the letters O, I and/or Z.
An importer type code is required for all U.S. importers. Valid Importer
type codes are:
- C - Corporation
- P - Partnership
- I - Individual
- S - Sole Proprietor
The state is validated against the first 3 digits of the zip code.
If the country field is left blank US is assumed.
To request a Customs assigned number, leave the IRS field blank
then respond Y to the system question generated prior to the upload.
If the country is Canada (CA), the zip code must be in the following
format: ANANAN (where A = alphabetic; N = numeric).
For Canada the province code is entered in the state field.
Valid province codes are:
- AB Alberta
- NB New Brunswick
- BC British Columbia
- MB Manitoba
- NS Nova Scotia
- ON Ontario
- PE Prince Edward Island
- PQ Quebec
- SK Saskatchewan
- NT Northwest Territories
- NF Newfoundland
- YT Yukon Territory
For all other foreign addresses, the state code is FN (foreign) and
combinations of up to 9 position alphanumeric codes are allowed in the zip