What are the challenges of receiving SMS 2FA codes on virtual numbers in the Middle East?

Receiving SMS 2FA codes on virtual numbers in the Middle East faces challenges such as stringent telecom regulations, carrier filtering, and delivery delays, making OTP reception less reliable than in other regions.

Regulatory and Telecom Restrictions

The Middle East region features complex and often strict telecommunications regulations that directly impact the use of virtual phone numbers for receiving SMS-based two-factor authentication (2FA) codes. Many countries mandate real-name registration and KYC (Know Your Customer) processes for phone number ownership. Virtual numbers, which are often seen as anonymous or disposable, can be blocked or heavily restricted by local carriers and government authorities.

For example, countries such as Saudi Arabia, the UAE, and Egypt enforce rigid telecom policies requiring SIM card registration with valid identification. This regulatory environment reduces the availability of legitimate virtual numbers and increases the likelihood that carriers will filter or reject messages sent to these numbers.

This regulatory climate is intended to curb fraud, spam, and criminal activities but creates a significant challenge for services relying on virtual numbers to deliver SMS 2FA codes reliably.

Carrier Filtering and Spam Prevention

Mobile carriers in the Middle East actively employ filtering systems designed to block or delay SMS messages destined for virtual numbers. These systems classify messages based on origin, content, and destination number type to prevent spam and fraudulent use.

Virtual numbers, due to their nature, are often flagged as suspicious destinations. Carriers may apply one or more of the following measures:

• Blocking messages from international or unknown sources.
• Delaying delivery for manual review.
• Dropping messages altogether without notification.

As a result, users relying on virtual numbers may experience inconsistent or failed delivery of 2FA codes, severely impacting user experience and security workflows.

Some carriers also restrict the use of short codes or sender IDs, which many OTP systems use, adding another layer of complexity for virtual number users.

Infrastructure and Delivery Challenges

Beyond regulations and filtering, the telecommunication infrastructure in some Middle Eastern countries can introduce latency or blockages for SMS delivery to virtual numbers. The routing and interconnection agreements between local carriers and international SMS providers affect how quickly and reliably messages arrive.

Virtual numbers, especially those sourced from non-local providers, may face routing issues where messages take longer paths, increasing delivery time or resulting in message loss.

Additionally, high volumes of SMS traffic related to fraud prevention and spam control can cause carriers to deprioritize or block messages to virtual numbers to protect their networks.

Voice OTP Limitations in the Middle East

Voice call OTP delivery is often considered an alternative to SMS, but in the Middle East, it faces its own set of challenges. Several countries have restrictions on automated voice calls, especially to virtual numbers, due to anti-spam policies and telephony regulations.

Moreover, the telephony infrastructure in certain areas may not support outbound voice calls to virtual lines or VoIP-based numbers, limiting the usefulness of this fallback method.

Where supported, voice OTPs may still suffer delays or failures similar to SMS, particularly if the number is flagged or the network treats it as suspicious.

Best Practices for Developers

To maximize success when using virtual numbers for 2FA in the Middle East, developers should consider the following approaches:

• Use local virtual numbers: Select numbers from providers with established presence and carrier partnerships in the target country.
• Rotate numbers: Avoid repeated use of the same number to reduce risk of carrier blacklisting.
• Monitor delivery rates: Implement analytics to track successful OTP reception and quickly switch providers or numbers when issues arise.
• Fallback methods: Where possible, offer alternative verification channels such as email or app-based OTPs.
• Compliance: Stay informed on local telecom regulations and ensure virtual number providers comply with them.

Implementing these strategies helps mitigate the region-specific challenges and improve the overall user experience.

SMSVerifier Support for the Middle East

SMSVerifier partners with over 10 upstream providers offering virtual phone numbers from across the Middle East, including countries like Saudi Arabia, UAE, Egypt, and others.

Our platform is designed to optimize OTP delivery by leveraging local carrier relationships, adaptive routing, and real-time monitoring to ensure the highest possible delivery rates despite the regional challenges.

For developers targeting this region, integrating SMSVerifier's services reduces the friction of OTP delivery on virtual numbers in the Middle East.