Area Code 638 – Maareb

Overview of Yemen's +967 638 Geographic Code

The +967 638 prefix is a geographic National Destination Code (NDC) assigned to the Maareb (Marib) governorate in the Republic of Yemen. This code is part of the country's public switched telephone network (PSTN) plan, administered by the Telecommunications and Information Technology Authority (TITA) under the framework of ITU-T E.164. The 638 code is used for fixed-line services, including traditional copper-line PSTN and, increasingly, fixed wireless access (FWA) and VoIP-based local telephony.

Geographic Coverage and Administrative Jurisdiction

Maareb Governorate is located in the eastern highlands of Yemen, approximately 170 kilometers east of the capital, Sana'a. The 638 code covers the entire governorate, including the provincial capital Marib City, as well as surrounding districts such as Al Abdiyah, Majzar, Medghal, and Raghwan. The area is known for its historical significance and recent economic development due to oil and gas resources. The code is designated for fixed-line subscribers within this administrative boundary, and it is not used for mobile services.

Dialing Formats and Caller Instructions

To call a fixed-line number in Maareb from abroad, dial the international access prefix (e.g., 00 from most countries, or + from a mobile phone), followed by Yemen's country code 967, then the area code 638, and the subscriber's 7-digit local number. The complete international format is: +967 638 XXX XXXX (where X represents the local number digits).

For example, if the local number is 1234567, the international dialing format would be: +967 638 1234567. When calling from within Yemen, dial the area code and local number directly: 638 1234567 (without the leading 0, as Yemen uses a closed numbering plan with no trunk prefix).

For local callers within Maareb, it is often possible to dial only the 7-digit subscriber number, depending on the operator's network configuration. However, using the full 10-digit format (638 + number) is recommended for consistency and to avoid misrouting.

Overlay and Numbering Considerations

Currently, there is no overlay code for Maareb; 638 remains the sole geographic code for the governorate. However, due to network expansion and the introduction of new services, TITA may implement number portability or additional NDCs in the future. Callers should always verify the correct area code when dialing, as misdialing may route calls to other governorates with similar codes.

For international callers, it is essential to note that Yemen's network infrastructure has faced challenges due to regional conflicts, which may affect call completion rates. In such cases, using alternative communication methods like VoIP or satellite services may be necessary.