Home NIDA National Identification Number (NIN) Tanzania
Tanzania NIDA National Identification Number (NIN) validator
How the NIDA National Identification Number (NIN) format works
- Format
- 20 digits, assigned for life and encoding an embedded date of birth
- Example
- 19900101123456789012
Things to watch for
- Format-only check — does not confirm the NIN was actually issued or belongs to a real person
- The number embeds a date of birth, but NIDA has not published the exact segment boundaries — this checker validates the overall 20-digit shape only
- Runs entirely in your browser — the number you enter is never transmitted or stored
^[0-9]{20}$Tanzania’s NIDA National Identification Number (NIN) is a 20-digit number the National Identification Authority assigns to every registered resident for life, for example 19900101123456789012. At 20 digits, it’s the longest national ID number covered in this list — more than triple the length of Nigeria’s 11-digit NIN or Ethiopia’s 12-digit Fayda number, for comparison.
Part of that length comes from an embedded date of birth, which NIDA has confirmed is present within the number. What NIDA hasn’t published, at least not in any publicly located specification, is exactly which digit positions carry the birth date versus other identifying data. Rather than guess at boundaries and risk misrepresenting a real person’s information, this checker doesn’t attempt to parse or decode any segment of the 20 digits — it validates the overall length and digit-only shape.
What this checker verifies
This tool confirms the input is exactly 20 digits, catching a wrong length or a non-numeric character — a meaningful check on its own, given how easy it is to drop or duplicate a digit in a string this long.
What a pass doesn’t confirm
A pass doesn’t mean NIDA actually issued that NIN or that it belongs to a real person, and it doesn’t decode the embedded birth date.
Scope: format-only validation, running entirely in your browser — nothing you type is transmitted or stored.
Content last reviewed 2026-08-09.
NIDA National Identification Number (NIN) FAQ
How long is Tanzania's NIDA National Identification Number?
20 digits, assigned once for life by the National Identification Authority (NIDA) — noticeably longer than most other national IDs in this list.
Does the NIN encode a date of birth?
Yes, a date of birth is embedded somewhere in the 20 digits, but NIDA hasn't published the exact segment boundaries publicly, so this checker doesn't attempt to decode or extract it — it validates the overall 20-digit shape only.
Does a correctly formatted NIN confirm it was actually issued?
No. It only confirms the input is 20 digits — it can't confirm NIDA actually assigned that specific number to a real person.