Netherlands • NPA 23 ☎️ Central Office Exchange (NXX)

+31 (23) 975 Exchange Code

Technical registry directory for telephone subscriber numbers starting with +31 (23) 975. Central office block assigned to Haarlem, Netherlands.

Standard Subscriber Format

+31 (23) 975-XXXX

Telecom Carrier Local Network Carrier

Area Code (NPA) 23

Primary Location Haarlem

Service Type Landline

📋 Central Office Exchange 975 Routing Details

The 975 exchange code (central office prefix) operates within the 23 Numbering Plan Area (NPA) servicing Haarlem, Netherlands. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.

Telecommunication services within the +31 (23) 975 prefix range are primarily provisioned by Local Network Carrier, delivering local landline voice lines and network routing.

🌐 Dialing Instructions

• Domestic Calls: Dial 023 975-1234 or local national format.
• International Calls: Dial +31 23 975-1234 from outside Netherlands.
• E.164 Standard: +3123975XXXX

📞 Nearby Exchanges in Area Code 23

View All Area Code 23 Exchanges ›

(23) 948 (23) 974 (23) 962 (23) 690 (23) 548 (23) 390 (23) 298 (23) 981 (23) 603 (23) 245 (23) 257 (23) 515 (23) 747 (23) 555 (23) 831 (23) 753

❓ Frequently Asked Questions

What area code is +31 (23) 975?

Phone numbers starting with +31 (23) 975 belong to the 23 area code in Haarlem, Netherlands, routed via exchange block 975.

How do I call a 975 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 23, and the subscriber number.

Which provider operates the 975 prefix in Haarlem?

Telecom services for the 975 exchange block in Haarlem are primarily assigned to Local Network Carrier for Landline connections.