0380 area code: Düzce
Area code 0380 belongs to Düzce province in Türkiye’s Black Sea Region (licence plate code 81). Within Türkiye dial 0 380 xxx xx xx; from abroad dial +90 380 xxx xx xx (drop the leading 0). Within the same area code you can omit it.
Area codes around Düzce
Landline area codes of the neighbouring provinces: Bolu 0374, Sakarya 0264, Zonguldak 0372.
Turkey Area Codes
- 0216 Istanbul (Asian Side)
- 0232 İzmir
- 0474 Kars
- 0366 Kastamonu
- 0352 Kayseri
- 0288 Kırklareli
- 0386 Kırşehir
- 0262 Kocaeli
- 0332 Konya
- 0274 Kütahya
- 0422 Malatya
- 0236 Manisa
- 0344 Kahramanmaraş
- 0482 Mardin
- 0252 Muğla
- 0436 Muş
- 0384 Nevşehir
- 0388 Niğde
- 0452 Ordu
- 0464 Rize
- 0264 Sakarya
- 0362 Samsun
- 0484 Siirt
- 0368 Sinop
- 0346 Sivas
- 0282 Tekirdağ
- 0356 Tokat
- 0462 Trabzon
- 0428 Tunceli
- 0414 Şanlıurfa
- 0276 Uşak
- 0432 Van
- 0354 Yozgat
- 0372 Zonguldak
- 0382 Aksaray
- 0458 Bayburt
- 0338 Karaman
- 0318 Kırıkkale
- 0488 Batman
- 0486 Şırnak
- 0378 Bartın
- 0478 Ardahan
- 0476 Iğdır
- 0226 Yalova
- 0370 Karabük
- 0348 Kilis
- 0328 Osmaniye
- 0380 Düzce
How to use
- 1Paste a phone number or area code (e.g. 0312 123 45 67, +90 532 or 0532) into the lookup box.
- 2See whether it is a landline or mobile number, and its province or originally assigned operator.
- 3Search the table by area code or city name, and check the mobile prefix list below it.
Turkish landline area codes
A Turkish landline number is a 3-digit area code plus a 7-digit subscriber number; inside Turkey a 0 is dialled first, e.g. 0312 for Ankara and 0232 for Izmir. Istanbul has two codes: 212 for the European side and 216 for the Asian side. Codes are roughly grouped by geography — 2xx mostly in Marmara, the Aegean and the western Mediterranean, 3xx in Central Anatolia, Çukurova and the western Black Sea, and 4xx in the eastern Black Sea, Eastern and Southeastern Anatolia — with some exceptions.
Calling Turkey from abroad
Turkey’s country code is +90. From abroad, dial +90 (or 0090 from most of Europe), then the number without its leading 0: Ankara 0312 123 45 67 becomes +90 312 123 45 67, and the mobile 0532 123 45 67 becomes +90 532 123 45 67. Save Turkish contacts in this international format so that WhatsApp and similar apps recognise them. The lookup accepts numbers in any of these formats.
Mobile prefixes and number portability
Turkish mobile numbers start with 5. Prefixes were originally allocated by operator: 530–539 (plus 516 and 561) to Turkcell, 540–549 to Vodafone, and 501, 505–507, 551–555 and 559 to Türk Telekom. Because numbers can be ported between operators, a prefix no longer reliably shows which network a line uses today — the tool shows the originally assigned operator only.
Frequently asked questions
Which city is area code 0312?
0312 (+90 312) is Ankara. Use the search box for any other code.
What is the difference between 0212 and 0216?
Both are Istanbul: 0212 is the European side and 0216 the Asian (Anatolian) side.
How do I call a Turkish number from abroad?
Dial +90 (or 0090), then the number without the leading 0 — e.g. 0532 123 45 67 becomes +90 532 123 45 67.
Which operator is 0532?
530–539 prefixes were assigned to Turkcell, but with number portability the line may now be with another operator.
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