Portugal • NPA 255
☎️ Central Office Exchange (NXX)
+351 (255) 233 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +351 (255) 233. Central office block assigned to Penafiel, Portugal.
Standard Subscriber Format
+351 (255) 233-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
255
Primary Location
Penafiel
Service Type
Landline
📋 Central Office Exchange 233 Routing Details
The 233 exchange code (central office prefix) operates within the 255 Numbering Plan Area (NPA) servicing Penafiel, Portugal. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +351 (255) 233 prefix range are primarily provisioned by Local Network Carrier, delivering local landline voice lines and network routing.
🌐 Dialing Instructions
-
•
Domestic Calls: Dial
0255 233-1234or local national format. -
•
International Calls: Dial
+351 255 233-1234from outside Portugal. -
•
E.164 Standard:
+351255233XXXX
📞 Nearby Exchanges in Area Code 255
View All Area Code 255 Exchanges ›❓ Frequently Asked Questions
What area code is +351 (255) 233?
Phone numbers starting with +351 (255) 233 belong to the 255 area code in Penafiel, Portugal, routed via exchange block 233.
How do I call a 233 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +351, then 255, and the subscriber number.
Which provider operates the 233 prefix in Penafiel?
Telecom services for the 233 exchange block in Penafiel are primarily assigned to Local Network Carrier for Landline connections.