Area Code 077 – Mobile Network
The phone area code for Mobile Network is 077 (international format +40077). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 077
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Overview of Romania's +40 077 Mobile Prefix
The +40 077 prefix is a non-geographic mobile allocation within Romania's national numbering plan, as defined under ITU-T E.164. Unlike geographic area codes tied to specific cities or regions, the 077 prefix is assigned to mobile network operators (MNOs) and mobile virtual network operators (MVNOs) serving the Romanian market. This means the prefix does not indicate the caller's or callee's physical location; rather, it identifies the mobile network that hosts the subscriber. Romanian mobile numbers, including those starting with 077, are typically 10 digits long when dialed domestically, formatted as 077X XXX XXX (where X represents a digit). Internationally, callers must use the full E.164 format: +40 77X XXX XXX, omitting the leading zero.
Technical Routing and Number Portability
Romania implemented mobile number portability (MNP) in 2008, allowing subscribers to retain their 077 numbers when switching between MNOs. Consequently, the prefix alone does not guarantee a specific carrier; routing is determined by a central number portability database. For voice calls and SMS, international carriers route traffic based on the +40 country code and the following digits, with the 077 prefix signaling a mobile destination. This ensures seamless interconnection between Romanian networks and global carriers, supporting both PSTN and VoIP interworking. When dialing from abroad, callers should replace the leading zero with +40 (e.g., +40 77X XXX XXX). From within Romania, the full 10-digit number (including the initial 0) is dialed.
Commercial and Regulatory Context
The 077 range is part of Romania's national numbering resources managed by the National Authority for Communications Administration and Regulation (ANCOM). MNOs holding 077 allocations include major operators such as Orange România, Vodafone România, and Telekom Romania (now part of Orange), as well as MVNOs operating on their networks. These numbers are used for a wide range of services, including voice, SMS, MMS, and mobile data. Because the prefix is non-geographic, it supports nationwide coverage and is not subject to regional tariffs. Calls to 077 numbers from fixed lines or other mobile networks are typically charged at mobile termination rates, which are regulated by ANCOM. For businesses, 077 numbers are often used for customer contact points, but they are not toll-free; the caller may incur charges depending on their tariff plan.
Dialing Instructions and Examples
To call a Romanian mobile number with the 077 prefix from abroad, dial the international access code (e.g., 00 from most European countries, or + from any mobile phone), followed by 40, then the 9-digit subscriber number without the leading zero. For example, a number written as 0771 234 567 would be dialed as +40 771 234 567. From within Romania, simply dial 0771 234 567. When storing such numbers in a phone's international format, always use +40 771 234 567 to ensure proper routing when roaming or calling from overseas. It is important to note that the 077 prefix is not a geographic indicator; therefore, it cannot be used to determine the caller's location for emergency services or legal jurisdiction purposes.