Mexico • NPA 481
☎️ Central Office Exchange (NXX)
+52 (481) 557 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +52 (481) 557. Central office block assigned to Ciudad Valles, SLP, Mexico.
Standard Subscriber Format
+52 (481) 557-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
481
Primary Location
Ciudad Valles, SLP
Service Type
Landline
📋 Central Office Exchange 557 Routing Details
The 557 exchange code (central office prefix) operates within the 481 Numbering Plan Area (NPA) servicing Ciudad Valles, SLP, Mexico. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +52 (481) 557 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
0481 557-1234or local national format. -
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International Calls: Dial
+52 481 557-1234from outside Mexico. -
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E.164 Standard:
+52481557XXXX
📞 Nearby Exchanges in Area Code 481
View All Area Code 481 Exchanges ›❓ Frequently Asked Questions
What area code is +52 (481) 557?
Phone numbers starting with +52 (481) 557 belong to the 481 area code in Ciudad Valles, SLP, Mexico, routed via exchange block 557.
How do I call a 557 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +52, then 481, and the subscriber number.
Which provider operates the 557 prefix in Ciudad Valles, SLP?
Telecom services for the 557 exchange block in Ciudad Valles, SLP are primarily assigned to Local Network Carrier for Landline connections.