China • NPA 311
☎️ Central Office Exchange (NXX)
+86 (311) 337 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +86 (311) 337. Central office block assigned to Shijiazhuang, Hebei, China.
Standard Subscriber Format
+86 (311) 337-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
311
Primary Location
Shijiazhuang, Hebei
Service Type
Landline
📋 Central Office Exchange 337 Routing Details
The 337 exchange code (central office prefix) operates within the 311 Numbering Plan Area (NPA) servicing Shijiazhuang, Hebei, China. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +86 (311) 337 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
0311 337-1234or local national format. -
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International Calls: Dial
+86 311 337-1234from outside China. -
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E.164 Standard:
+86311337XXXX
📞 Nearby Exchanges in Area Code 311
View All Area Code 311 Exchanges ›❓ Frequently Asked Questions
What area code is +86 (311) 337?
Phone numbers starting with +86 (311) 337 belong to the 311 area code in Shijiazhuang, Hebei, China, routed via exchange block 337.
How do I call a 337 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 311, and the subscriber number.
Which provider operates the 337 prefix in Shijiazhuang, Hebei?
Telecom services for the 337 exchange block in Shijiazhuang, Hebei are primarily assigned to Local Network Carrier for Landline connections.