Lithuania • NPA 387
☎️ Central Office Exchange (NXX)
+370 (387) 257 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +370 (387) 257. Central office block assigned to Švenčionys, Lithuania.
Standard Subscriber Format
+370 (387) 257-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
387
Primary Location
Švenčionys
Service Type
Landline
📋 Central Office Exchange 257 Routing Details
The 257 exchange code (central office prefix) operates within the 387 Numbering Plan Area (NPA) servicing Švenčionys, Lithuania. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +370 (387) 257 prefix range are primarily provisioned by Local Network Carrier, delivering local landline voice lines and network routing.
🌐 Dialing Instructions
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Domestic Calls: Dial
0387 257-1234or local national format. -
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International Calls: Dial
+370 387 257-1234from outside Lithuania. -
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E.164 Standard:
+370387257XXXX
📞 Nearby Exchanges in Area Code 387
View All Area Code 387 Exchanges ›❓ Frequently Asked Questions
What area code is +370 (387) 257?
Phone numbers starting with +370 (387) 257 belong to the 387 area code in Švenčionys, Lithuania, routed via exchange block 257.
How do I call a 257 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +370, then 387, and the subscriber number.
Which provider operates the 257 prefix in Švenčionys?
Telecom services for the 257 exchange block in Švenčionys are primarily assigned to Local Network Carrier for Landline connections.