Area Code 521 – Vilnius

Overview of Area Code 521 (Vilnius)

Area code 521 is a geographic National Destination Code (NDC) assigned to the Vilnius metropolitan area, the capital and largest city of Lithuania. Under the ITU-T E.164 international numbering plan, the full country calling code for Lithuania is +370, and when dialing a Vilnius landline from abroad, you would use the sequence +370 521 followed by the local subscriber number. Within Lithuania, the trunk prefix 8 is used for national long-distance calls, so a domestic call to a Vilnius number would be dialed as 8 521 followed by the local number.

Geographic Coverage and Administrative Jurisdiction

The 521 code covers the central and southern districts of Vilnius city, including the Old Town (Senamiestis), Naujamiestis, and surrounding neighborhoods. Vilnius serves as the administrative seat of Vilnius County and the national government, hosting numerous ministries, embassies, and corporate headquarters. The Vilnius urban area is home to over half a million residents, making it the primary economic and political hub of Lithuania.

Dialing Formats and Caller Instructions

For local callers within Vilnius, the area code is often omitted when dialing numbers in the same exchange area, though this practice is becoming less common with the proliferation of multi-line businesses. For national callers outside Vilnius, the full national format is 8 521 XXX XXX (where X represents the local subscriber digits). International callers should dial +370 521 XXX XXX from any country. It is important to note that Lithuanian landline numbers typically consist of 8 digits after the country code, including the NDC, so the local subscriber number after 521 is usually 5 digits.

Overlay and Numbering Considerations

Currently, there is no overlay code for Vilnius; the 521 code remains the sole geographic NDC for this area. However, number portability allows subscribers to retain their 521 numbers when switching between fixed-line operators, which may result in a number not being physically located in Vilnius. Additionally, many businesses in Vilnius use VoIP services, but the geographic code still applies for regulatory and emergency services routing.

Practical Examples

• Calling a Vilnius landline from the United States: 011 370 521 XXX XXX
• Calling from another Lithuanian city: 8 521 XXX XXX
• Calling from a mobile phone within Lithuania: +370 521 XXX XXX (recommended for clarity)

When dialing internationally, always replace the leading zero (if present) with the country code. For Lithuania, there is no leading zero in the international format, so simply use +370 followed by the NDC and subscriber number.