China • NPA 22
☎️ Central Office Exchange (NXX)
+86 (22) 790 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +86 (22) 790. Central office block assigned to Tianjin, China.
Standard Subscriber Format
+86 (22) 790-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
22
Primary Location
Tianjin
Service Type
Landline
📋 Central Office Exchange 790 Routing Details
The 790 exchange code (central office prefix) operates within the 22 Numbering Plan Area (NPA) servicing Tianjin, China. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +86 (22) 790 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
022 790-1234or local national format. -
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International Calls: Dial
+86 22 790-1234from outside China. -
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E.164 Standard:
+8622790XXXX
📞 Nearby Exchanges in Area Code 22
View All Area Code 22 Exchanges ›❓ Frequently Asked Questions
What area code is +86 (22) 790?
Phone numbers starting with +86 (22) 790 belong to the 22 area code in Tianjin, China, routed via exchange block 790.
How do I call a 790 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 22, and the subscriber number.
Which provider operates the 790 prefix in Tianjin?
Telecom services for the 790 exchange block in Tianjin are primarily assigned to Local Network Carrier for Landline connections.