France • NPA 3
☎️ Central Office Exchange (NXX)
+33 (3) 577 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +33 (3) 577. Central office block assigned to North-East Region, France.
Standard Subscriber Format
+33 (3) 577-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
3
Primary Location
North-East Region
Service Type
Landline
📋 Central Office Exchange 577 Routing Details
The 577 exchange code (central office prefix) operates within the 3 Numbering Plan Area (NPA) servicing North-East Region, France. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +33 (3) 577 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
03 577-1234or local national format. -
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International Calls: Dial
+33 3 577-1234from outside France. -
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E.164 Standard:
+333577XXXX
📞 Nearby Exchanges in Area Code 3
View All Area Code 3 Exchanges ›❓ Frequently Asked Questions
What area code is +33 (3) 577?
Phone numbers starting with +33 (3) 577 belong to the 3 area code in North-East Region, France, routed via exchange block 577.
How do I call a 577 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +33, then 3, and the subscriber number.
Which provider operates the 577 prefix in North-East Region?
Telecom services for the 577 exchange block in North-East Region are primarily assigned to Local Network Carrier for Landline connections.