- PROVINCE
- Balochistan
- DIVISION
- Nasirabad DivisionDigit 2 of the prefix — 3
- DISTRICT
- Kachhi (Bolan) District
- TEHSILS
- 4Dhadar · Bhag · Mach · Sanni
What 531 tells you
A Pakistani CNIC is thirteen digits long, and the first five of them are not random. They are a location record, written at the moment the card was registered. A card whose number opens with 531 was registered in Kachhi (Bolan) District, Balochistan, in Nasirabad Division.
Reading it left to right: 5 is the province digit and is definitive — 5 always means Balochistan. 3 selects the division inside that province, here Nasirabad Division. 1 selects the district inside that division, which gives us Kachhi (Bolan). The two digits that follow — positions four and five — narrow it further to a local registration zone inside the district.
TEHSILS OF KACHHI (BOLAN)
Kachhi (Bolan) District is divided into 4 administrative tehsils. NADRA’s internal registration zones do not map one-to-one onto tehsil boundaries, so treat this as the administrative picture rather than a decoder for digits four and five.
| # | Tehsil | District | Province |
|---|---|---|---|
| 1 | Dhadar | Kachhi (Bolan) | Balochistan |
| 2 | Bhag | Kachhi (Bolan) | Balochistan |
| 3 | Mach | Kachhi (Bolan) | Balochistan |
| 4 | Sanni | Kachhi (Bolan) | Balochistan |
OTHER DISTRICTS IN NASIRABAD DIVISION
COMMON QUESTIONS
Which district is CNIC code 531?
531 belongs to Kachhi (Bolan) District in Balochistan, within Nasirabad Division.
Digit 1 (5) is the province, digit 2 (3) the division, and digit 3 (1) the district within that division.
Does a 531 CNIC mean the holder lives in Kachhi (Bolan)?
No. The regional prefix records where the card was registered with NADRA, not where the holder lives now. People who move, or who register at a family address, keep the original prefix.
It is also not proof of domicile. Domicile is a separate certificate issued by the district administration.
Which tehsils fall under Kachhi (Bolan) District?
Kachhi (Bolan) District covers 4 administrative tehsils: Dhadar, Bhag, Mach, Sanni.
Tehsil boundaries and NADRA's internal registration zones are not the same thing, so the last two digits of a CNIC do not map one-to-one onto this list.
What comes after 531 in a full CNIC?
A complete CNIC is thirteen digits: the five-digit regional prefix, then a seven-digit family/serial number, then a single check digit that also encodes gender (odd for male, even for female).
NADRA has never published the full list of local-zone codes, so the last two digits of the prefix cannot be resolved to a named area for this district.
How reliable is the code 531?
531 is reconstructed from the standard coding scheme and community lists rather than an official published table. The province digit is definitive; the district mapping should be treated as a strong indication rather than a guarantee.
NADRA has never released a complete district-to-prefix table, which is why this register marks every entry as either a documented anchor or a derived code.
KEEP LOOKING
Sources. Administrative data adapted from Wikipedia (CNIC, Administrative units of Pakistan, Districts of Pakistan) under CC BY-SA 4.0, with changes; prefix mapping cross-checked against public administrative and community-compiled lists. Reviewed 2026-09-02. Full sources, accuracy and ethics. Unofficial reference — not affiliated with NADRA, and not proof of identity or domicile.