China • NPA 29
☎️ Central Office Exchange (NXX)
+86 (29) 640 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +86 (29) 640. Central office block assigned to XiAn/Xianyang, Shaanxi, China.
Standard Subscriber Format
+86 (29) 640-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
29
Primary Location
XiAn/Xianyang, Shaanxi
Service Type
Landline
📋 Central Office Exchange 640 Routing Details
The 640 exchange code (central office prefix) operates within the 29 Numbering Plan Area (NPA) servicing XiAn/Xianyang, Shaanxi, China. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +86 (29) 640 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
029 640-1234or local national format. -
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International Calls: Dial
+86 29 640-1234from outside China. -
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E.164 Standard:
+8629640XXXX
📞 Nearby Exchanges in Area Code 29
View All Area Code 29 Exchanges ›❓ Frequently Asked Questions
What area code is +86 (29) 640?
Phone numbers starting with +86 (29) 640 belong to the 29 area code in XiAn/Xianyang, Shaanxi, China, routed via exchange block 640.
How do I call a 640 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +86, then 29, and the subscriber number.
Which provider operates the 640 prefix in XiAn/Xianyang, Shaanxi?
Telecom services for the 640 exchange block in XiAn/Xianyang, Shaanxi are primarily assigned to Local Network Carrier for Landline connections.