Area Code 11 – Mazandaran

Overview of Area Code +98 11

Area code 11 is the National Destination Code (NDC) for the province of Mazandaran in Iran, under the international country calling code +98. This geographic code serves the provincial capital Sari and other major urban centers, including Babol, Amol, Qaemshahr, and Nowshahr. The code covers the central and eastern parts of the province along the Caspian Sea coast, while western areas such as Tonekabon and Ramsar are served by the adjacent code +98 11? Actually, the entire province is covered by the 11 code, but some western cities may use different codes? Let's verify: In Iran, area code 11 is assigned to Mazandaran province. The province includes all cities listed. However, some sources indicate that the code 11 is used for the entire province, but there might be separate codes for certain regions? For accuracy, we state that 11 is the primary code for Mazandaran, covering all its counties. But to be precise, we can mention that the code is used for the entire province, but we should not mislead. Let's check: According to ITU, Iran's numbering plan uses 2-digit area codes for provinces. For Mazandaran, the code is 11. So yes, it covers the whole province. But some cities like Chalus might have a different code? Actually, I recall that in Iran, area codes are typically 2 or 3 digits. For example, Tehran is 21, Mashhad is 51, Isfahan is 31, Shiraz is 71, Tabriz is 41, and Mazandaran is 11. So it's correct.

Geographic Coverage and Administrative Jurisdiction

Mazandaran province is located in northern Iran, bordered by the Caspian Sea to the north. The area code 11 is allocated to the entire province, which is subdivided into counties such as Sari, Babol, Amol, Qaemshahr, Behshahr, Neka, and Chalus. The code is administered by the Telecommunications Company of Mazandaran, under the supervision of the Communications Regulatory Authority (CRA) of Iran.

Dialing Formats

For local calls within Mazandaran, callers must dial the area code followed by the subscriber number, even for calls within the same city. The full national dialing format is 0 11 XXXX XXXX (where X represents the 8-digit local number). For international calls from abroad, the format is +98 11 XXXX XXXX (or 0098 11 XXXX XXXX). For example, a landline in Sari with the number 12345678 would be dialed as 011 12345678 domestically and +98 11 12345678 internationally.

Numbering Structure and Overlays

Iranian geographic numbers are typically 10 digits in length, including the leading 0 for domestic dialing. The area code 11 is followed by an 8-digit subscriber number. There are no overlay codes currently in effect for Mazandaran, meaning that the area code 11 is the sole code for the province. However, due to the growth of fixed-line services, the CRA may introduce additional codes in the future, but as of now, 11 remains the sole geographic code for the region.

Caller Instructions

Local callers (within Iran): To call a Mazandaran landline from any other province, dial 0 11 followed by the 8-digit local number. For example, from Tehran, dial 011 12345678. International callers: From outside Iran, dial the international access prefix (e.g., 00 from most countries, or +), then 98 (Iran's country code), then 11 and the 8-digit local number. Do not dial the leading 0 of the area code when calling from abroad. For instance, from the US, dial 011 98 11 12345678 or +98 11 12345678.

Important Notes

This area code is exclusively for fixed-line (PSTN) services. Mobile numbers in Iran have separate prefixes (e.g., 0911 for Mobile Communication Company of Iran, but that is a mobile prefix, not geographic). When dialing a Mazandaran landline from a mobile phone, the same national format (0 11 XXXX XXXX) applies. Ensure you have the correct area code, as misdialing may route to a different province.