Technical Guide to Phone Numbers in Curacao

Quick Reference

• Country: Curacao
• Country Code: +599
• International Prefix: 00
• National Prefix: None
• Regulatory Body: Ministry of Economic Development

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Overview

Discover the intricacies of Curaçao's telephone numbering plan. This guide is tailored for telecom professionals, developers, and system administrators seeking precise, data-driven insights into Curaçao's telecommunications infrastructure.

Number Structure

Curaçao's phone numbers align with the E.164 international numbering plan, ensuring global compatibility.

General Number Structure

• Country Code: +599
• National (Significant) Number: 7 digits
• Format: +599 NXX XXXX

Number Components

1. Country Code: +599
2. National Destination Code (NDC): 3 digits - NXX
3. Subscriber Number: 4 digits - XXXX

Example Number

• Example: +599 946 1234

Number Formats by Type

Type	Format	Example	Regular Expression
Geographic	+599 9XX XXXX	+599 946 1234	^\+599 9[0-9]{2} [0-9]{4}$
Mobile	+599 95X XXXX	+599 952 5678	^\+599 95[0-9] [0-9]{4}$
Shared Cost	+599 60X XXXX	+599 602 1234	^\+599 60[0-2] [0-9]{4}$
Toll-Free	+599 800 XXXX	+599 800 1234	^\+599 800 [0-9]{4}$
Premium Rate	+599 900 XXXX	+599 900 5678	^\+599 900 [0-9]{4}$

Dialing Procedures

Domestic Calls

• Landline to Landline: Dial the 7-digit local number directly.
• Landline to Mobile: Dial the 7-digit mobile number directly.
• Mobile to Mobile: Dial the 7-digit mobile number directly.

International Calls

• Outgoing: Dial 00 (international prefix) + Country Code + National Number.
  • Example: To call a number in the US from Curaçao, dial 00 1 212 555 1234.
• Incoming: Dial +599 followed by the 7-digit local number.
  • Example: +599 946 1234

Recent Changes to Numbering Plan

Currently, there have been no significant changes to Curaçao's numbering plan in the last five years, maintaining consistency with ITU-T E.164 recommendations.

Number Portability

Curaçao does not support number portability, meaning subscribers cannot retain their phone numbers when switching between different telecom operators.

Major Telecom Operators and Number Ranges

Operator	Number Range	Notes
UTS	9XX XXXX	Major landline and mobile operator
Flow	95X XXXX	Mobile services
Digicel	95X XXXX	Mobile services

ITU-T Recommendations

Curaçao adheres to the ITU-T E.164 recommendation, ensuring compatibility with global telecommunications standards.

Number Allocation and Management

The Ministry of Economic Development manages the allocation and distribution of telephone numbers in Curaçao, ensuring compliance with international standards.

Technical Restrictions and Special Cases

• Golden Numbers: No specific regulations for "golden" numbers in Curaçao.
• Number Blocking: Certain number ranges may be reserved for special services, but detailed information is not publicly available.

Technical Considerations for Developers

When developing systems for Curaçao's phone numbers, consider:

• Validation: Use provided regular expressions for number validation.
• Formatting: Ensure phone numbers adhere to the E.164 standard.
• Internationalization: Implement logic for both domestic and international dialing formats.
• Error Handling: Prepare for potential changes in the numbering plan and update validation rules accordingly.