India • NPA 171
☎️ Central Office Exchange (NXX)
+91 (171) 720 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +91 (171) 720. Central office block assigned to Ambala, Haryana, India.
Standard Subscriber Format
+91 (171) 720-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
171
Primary Location
Ambala, Haryana
Service Type
Landline
📋 Central Office Exchange 720 Routing Details
The 720 exchange code (central office prefix) operates within the 171 Numbering Plan Area (NPA) servicing Ambala, Haryana, India. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +91 (171) 720 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
0171 720-1234or local national format. -
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International Calls: Dial
+91 171 720-1234from outside India. -
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E.164 Standard:
+91171720XXXX
📞 Nearby Exchanges in Area Code 171
View All Area Code 171 Exchanges ›❓ Frequently Asked Questions
What area code is +91 (171) 720?
Phone numbers starting with +91 (171) 720 belong to the 171 area code in Ambala, Haryana, India, routed via exchange block 720.
How do I call a 720 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +91, then 171, and the subscriber number.
Which provider operates the 720 prefix in Ambala, Haryana?
Telecom services for the 720 exchange block in Ambala, Haryana are primarily assigned to Local Network Carrier for Landline connections.