China • NPA 970
☎️ Central Office Exchange (NXX)
+86 (970) 840 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +86 (970) 840. Central office block assigned to Haiyan, Qinghai, China.
Standard Subscriber Format
+86 (970) 840-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
970
Primary Location
Haiyan, Qinghai
Service Type
Landline
📋 Central Office Exchange 840 Routing Details
The 840 exchange code (central office prefix) operates within the 970 Numbering Plan Area (NPA) servicing Haiyan, Qinghai, China. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +86 (970) 840 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
0970 840-1234or local national format. -
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International Calls: Dial
+86 970 840-1234from outside China. -
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E.164 Standard:
+86970840XXXX
📞 Nearby Exchanges in Area Code 970
View All Area Code 970 Exchanges ›❓ Frequently Asked Questions
What area code is +86 (970) 840?
Phone numbers starting with +86 (970) 840 belong to the 970 area code in Haiyan, Qinghai, China, routed via exchange block 840.
How do I call a 840 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 970, and the subscriber number.
Which provider operates the 840 prefix in Haiyan, Qinghai?
Telecom services for the 840 exchange block in Haiyan, Qinghai are primarily assigned to Local Network Carrier for Landline connections.