French Guiana +594

French Guiana, an overseas department and region of France located on the northeastern coast of South America, operates under the French national numbering plan, with the country calling code +594. This unique status blends European governance with Caribbean and Amazonian geography, creating a distinct telecommunications environment. For international callers, understanding how to reach this territory requires knowledge of both French administrative norms and local nuances. The +594 prefix is exclusively assigned to French Guiana, distinguishing it from mainland France (+33) and other French overseas territories like Guadeloupe (+590) or Martinique (+596). This distinction is crucial for businesses, expatriates, and travelers who need reliable connectivity to this remote but digitally integrated region.

Dialing Instructions for International Callers

To place an international call to French Guiana from abroad, you must follow a specific sequence of numbers. Begin with the international access code of your current country (e.g., 011 from the United States, 00 from most European nations, or + from mobile networks). Next, dial the country code 594, followed by the local subscriber number. French Guiana uses a closed numbering plan, meaning all local numbers are six digits long and must be dialed in full after the country code. There are no separate area codes within the territory; instead, the six-digit number is the complete subscriber identifier. For example, if a local number is 123456, you would dial [international prefix] + 594 + 123456. Mobile numbers also follow this six-digit format, with no special prefix to distinguish them from landlines, though they are typically provisioned on GSM networks compatible with European frequencies.

Context on Numbering and Call Routing

The absence of traditional area codes is a direct result of French Guiana's small population—roughly 300,000 inhabitants—concentrated mainly along the Atlantic coast. The capital, Cayenne, and other towns such as Kourou and Saint-Laurent-du-Maroni share the same numbering pool. This simplifies dialing but also means that callers must rely on the full six-digit number without geographic hints. Historically, numbers were assigned with a fixed-line prefix (e.g., 94 for landlines) and mobile prefixes (e.g., 94 30, 94 40), but these are not mandatory for routing. Since 2010, all local numbers have been standardized to six digits, eliminating the need for trunk prefixes like '0' when calling domestically from within French Guiana. When calling from mainland France, however, a different procedure applies: you must dial 00 (international prefix) + 594 + the six-digit number, as French Guiana is treated as a separate international destination despite its departmental status.

Special Rules and Regulatory Considerations

One notable regulatory aspect is that French Guiana is part of the European Union's roaming regulations, meaning that travelers from EU countries with compatible mobile plans may incur reduced or regulated roaming charges when using their phones. However, for non-EU callers, it is essential to check with your service provider about international rates to avoid unexpected fees. Additionally, toll-free numbers and premium-rate services in French Guiana follow French numbering conventions, but they are not accessible via the +594 code; instead, they are typically reached through French national numbers (+33) or local shortcodes. For emergency services, dialing 15 (medical), 17 (police), or 18 (fire) works locally, but international visitors should rely on the global standard 112, which is universally accessible in French Guiana. Another practical tip: when sending faxes or using older modem-based equipment, ensure that your device supports the appropriate signaling standards, as the network is fully digital and VoIP-compatible.

Practical Advice for Travelers and Businesses

For business professionals establishing contact with French Guiana, it is prudent to verify the exact local number format with your counterpart, as some listings may inadvertently include a leading '0' from domestic French dialing habits. Always drop the '0' when dialing from abroad. Time zone differences—UTC-3—should also be considered when scheduling calls, as French Guiana does not observe daylight saving time, which can shift the time difference with Europe seasonally. Travelers should consider purchasing a local SIM card upon arrival for cost-effective calls within the territory and to neighboring countries. Major providers like Orange and Digicel offer prepaid plans with data bundles. For high-volume business communications, VoIP services (e.g., Skype, WhatsApp) are widely used, but be aware that internet reliability can vary in remote interior areas. Finally, always test international dialing from your hotel or office before critical calls, as some private exchanges may require an external line access code (e.g., 0 or 9) before the international prefix.