China • NPA 738
☎️ Central Office Exchange (NXX)
+86 (738) 257 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +86 (738) 257. Central office block assigned to Loudi, Hunan, China.
Standard Subscriber Format
+86 (738) 257-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
738
Primary Location
Loudi, Hunan
Service Type
Landline
📋 Central Office Exchange 257 Routing Details
The 257 exchange code (central office prefix) operates within the 738 Numbering Plan Area (NPA) servicing Loudi, Hunan, China. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +86 (738) 257 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
0738 257-1234or local national format. -
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International Calls: Dial
+86 738 257-1234from outside China. -
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E.164 Standard:
+86738257XXXX
📞 Nearby Exchanges in Area Code 738
View All Area Code 738 Exchanges ›❓ Frequently Asked Questions
What area code is +86 (738) 257?
Phone numbers starting with +86 (738) 257 belong to the 738 area code in Loudi, Hunan, China, routed via exchange block 257.
How do I call a 257 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 738, and the subscriber number.
Which provider operates the 257 prefix in Loudi, Hunan?
Telecom services for the 257 exchange block in Loudi, Hunan are primarily assigned to Local Network Carrier for Landline connections.