CASTIN stands for Code Agreement Special TIN.
A special TIN code agreement is an agreement between tango.info and an authorised party allowing that party to assign Special TINs.
A TIN assigned under such an agreement is called a Code Agreement Special TIN or CASTIN.
CASTINs are of the form:
- jkm are unique and are chosen by tango.info and the code agreeement third party
- n is the TIN checkdigit
Current code agreements
- j was chosen by tango.info and kl and sometimes m can be chosen by the third party
- jkl chosen by tango.info, m by 3rd party
see also: tango.info CASTIN index
In the tangocd.com code agreement range 0248000291kl2n the first 10 codes are:
02480002910022 02480002910121 02480002910220 02480002910329 02480002910428 02480002910527 02480002910626 02480002910725 02480002910824 02480002910923
It does not mean that they are assigned.