Serbia • NPA 21
☎️ Central Office Exchange (NXX)
+381 (21) 813 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +381 (21) 813. Central office block assigned to Novi Sad, Serbia.
Standard Subscriber Format
+381 (21) 813-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
21
Primary Location
Novi Sad
Service Type
Landline
📋 Central Office Exchange 813 Routing Details
The 813 exchange code (central office prefix) operates within the 21 Numbering Plan Area (NPA) servicing Novi Sad, Serbia. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +381 (21) 813 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
021 813-1234or local national format. -
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International Calls: Dial
+381 21 813-1234from outside Serbia. -
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E.164 Standard:
+38121813XXXX
📞 Nearby Exchanges in Area Code 21
View All Area Code 21 Exchanges ›❓ Frequently Asked Questions
What area code is +381 (21) 813?
Phone numbers starting with +381 (21) 813 belong to the 21 area code in Novi Sad, Serbia, routed via exchange block 813.
How do I call a 813 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +381, then 21, and the subscriber number.
Which provider operates the 813 prefix in Novi Sad?
Telecom services for the 813 exchange block in Novi Sad are primarily assigned to Local Network Carrier for Landline connections.