Turkish postal code lookup

Enter a 5-digit PTT postal code to see the province and plate. Plain-language «i» tips for the PTT rule and limits; use TR validation for address or TCKN.

Idle $0 This lookup is free (demo quota) Paid = API key for software integration No district resolution

Province is resolved from the first two digits (plate map 01–81). District or neighbourhood is not claimed — the full PTT directory is out of scope. PTT is authoritative.

Postal code lookup form

Results appear here

Enter a 5-digit code and look up. Validity, province and plate open as cards. Next: wire the same endpoint into your software, or continue to address validation.

Rules (summary)

5-digit PTT · first two digits = plate (01–81) · province from plate map · out of range → province null · no district · deterministic /v1/tr/postal-code.

Does this resolve the district?

No. Only the province (plate) from the first two digits. District / neighbourhood needs the full PTT directory and is out of scope. For an address line use /tr-dogrulama.

What about 00xxx or 99xxx?

If the shape is 5 digits, valid may be true; outside 01–81, province is null with confidence none. No invented province name.