Sanitize and Validate Phone Numbers for e-commerce

Phone numbers entered during e-commerce checkout can be malformed, stored in inconsistent formats, or linked to landlines and other lines unable to receive SMS, potentially causing missed delivery notifications and avoidable “Where Is My Order” support requests. The Vonage Identity Insights API is presented as a way to address these issues by using its format insight to normalize numbers to E.164 and its current_carrier insight to check live carrier-routing data and determine whether a number is currently a mobile line. Unlike regex validation and static carrier databases, which cannot reliably identify ported numbers or distinguish all line types, the API provides current carrier information globally without Network Registry approval for these insights. The article recommends invoking the API server-side at checkout before storing the number or sending messages, caching results during the session, and maintaining timeout fallbacks; it also notes JWT-based authentication through a Vonage application and suggests Vonage Verify for OTP verification of higher-risk orders.

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