In order to purchase a Turkey number you will need to provide the following:

For business identity verification:

* Name, last name of an authorized representative
* Company name
* Contact phone number
* Circular of Signatures (İmza Sirküleri)
* Tax Registration Certificate (Vergi Levhası)
* Chamber of Commerce Registration Document (Faaliyet Belgesi)
* Trade Registry Gazette (Ticari Sicil Gazetesi)
* Passport or ID copy of an authorized representative (Yetkili Kimlik Fotokopisi)

For address verification:

* Address in Turkey (street, building number, postal code, city, and country)

* Address confirmation from Turkish government portal (Adres Beyani) (https://www.turkiye.gov.tr/nvi-yerlesim-yeri-ve-diger-adres-belgesi-sorgulama [https://www.turkiye.gov.tr/nvi-yerlesim-yeri-ve-diger-adres-belgesi-sorgulama])
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Additional Details:

Istanbul Asia (216) and Istanbul Europe (212) phone numbers must be strictly separated. Companies registered in the European region are eligible only for the 212 prefix, while companies registered in the Asian region are restricted to the 216 prefix.