Poland • NPA 85
☎️ Central Office Exchange (NXX)
+48 (85) 431 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +48 (85) 431. Central office block assigned to Bialystok, Poland.
Standard Subscriber Format
+48 (85) 431-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
85
Primary Location
Bialystok
Service Type
Landline
📋 Central Office Exchange 431 Routing Details
The 431 exchange code (central office prefix) operates within the 85 Numbering Plan Area (NPA) servicing Bialystok, Poland. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +48 (85) 431 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
085 431-1234or local national format. -
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International Calls: Dial
+48 85 431-1234from outside Poland. -
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E.164 Standard:
+4885431XXXX
📞 Nearby Exchanges in Area Code 85
View All Area Code 85 Exchanges ›❓ Frequently Asked Questions
What area code is +48 (85) 431?
Phone numbers starting with +48 (85) 431 belong to the 85 area code in Bialystok, Poland, routed via exchange block 431.
How do I call a 431 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +48, then 85, and the subscriber number.
Which provider operates the 431 prefix in Bialystok?
Telecom services for the 431 exchange block in Bialystok are primarily assigned to Local Network Carrier for Landline connections.