Netherlands • NPA 71
☎️ Central Office Exchange (NXX)
+31 (71) 997 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +31 (71) 997. Central office block assigned to Leiden, Netherlands.
Standard Subscriber Format
+31 (71) 997-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
71
Primary Location
Leiden
Service Type
Landline
📋 Central Office Exchange 997 Routing Details
The 997 exchange code (central office prefix) operates within the 71 Numbering Plan Area (NPA) servicing Leiden, Netherlands. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +31 (71) 997 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
071 997-1234or local national format. -
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International Calls: Dial
+31 71 997-1234from outside Netherlands. -
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E.164 Standard:
+3171997XXXX
📞 Nearby Exchanges in Area Code 71
View All Area Code 71 Exchanges ›❓ Frequently Asked Questions
What area code is +31 (71) 997?
Phone numbers starting with +31 (71) 997 belong to the 71 area code in Leiden, Netherlands, routed via exchange block 997.
How do I call a 997 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +31, then 71, and the subscriber number.
Which provider operates the 997 prefix in Leiden?
Telecom services for the 997 exchange block in Leiden are primarily assigned to Local Network Carrier for Landline connections.