Mexico • NPA 721
☎️ Central Office Exchange (NXX)
+52 (721) 520 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +52 (721) 520. Central office block assigned to Ixtapan de la Sal, MEX, Mexico.
Standard Subscriber Format
+52 (721) 520-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
721
Primary Location
Ixtapan de la Sal, MEX
Service Type
Landline
📋 Central Office Exchange 520 Routing Details
The 520 exchange code (central office prefix) operates within the 721 Numbering Plan Area (NPA) servicing Ixtapan de la Sal, MEX, Mexico. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +52 (721) 520 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
0721 520-1234or local national format. -
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International Calls: Dial
+52 721 520-1234from outside Mexico. -
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E.164 Standard:
+52721520XXXX
📞 Nearby Exchanges in Area Code 721
View All Area Code 721 Exchanges ›❓ Frequently Asked Questions
What area code is +52 (721) 520?
Phone numbers starting with +52 (721) 520 belong to the 721 area code in Ixtapan de la Sal, MEX, Mexico, routed via exchange block 520.
How do I call a 520 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 721, and the subscriber number.
Which provider operates the 520 prefix in Ixtapan de la Sal, MEX?
Telecom services for the 520 exchange block in Ixtapan de la Sal, MEX are primarily assigned to Local Network Carrier for Landline connections.