The complete guide to phone number validation

Every customer interaction starts with a phone number; however, not every number is real, reachable, or stored correctly.

When your database contains bad numbers, your business will suffer the consequences everywhere, including wasted SMS spend, failed one-time passwords (OTPs) or abandoned onboarding, an influx of support tickets and missed revenue because the right person didn’t receive their communications.

A leading credit reference agency requires a solution to validate millions of customer phone numbers collected from multiple sources globally.

The requirement? To find a seamless way to maintain data integrity, streamline their communication systems, and reduce wasted costs on invalid contacts, all while meeting strict regulatory and data protection standards.

What does phone number validation mean?

Acudo can integrate seamlessly into our partners’ existing infrastructure through both real-time APIs and bulk upload processing, enabling:

Instant validation cof customer phone numbers as they enter the system.
Automated checks across global datasets to clean and update existing records.
Simplified outputs that clearly indicate whether each number is live, ported, or inactive; understandable even by non-technical teams.

This hybrid approach allowed businesses to maintain data integrity at scale, across multiple regions and business units

Robust, fast, and fault-tolerant architecture for 24/7 reliability.
Multi-region access controls supporting global enterprise teams.
Custom data identifiers for internal tracking and analytics.
Clear, standardised responses for consistent interpretation across departments.
Optional feature toggles, such as disposable number detection and last ported date tracking

For existing data cleansing and analysis tools, Acudo’s bulk upload portal enables:

Robust, fast, and fault-tolerant architecture for 24/7 reliability.
Multi-region access controls supporting global enterprise teams.
Custom data identifiers for internal tracking and analytics.
Clear, standardised responses for consistent interpretation across departments.
Optional feature toggles, such as disposable number detection and last ported date tracking

Bring it all together

Improved data quality

Out of a sample of 25 million processed numbers on behalf of a credit referencing agency, 17.4% were identified as invalid, instantly improving database accuracy and decision-making reliability.

New revenue streams

Validated number data can be leveraged as a standalone service offering, creating a new income source.

Significant cost savings

By removing 4.35 million inactive numbers, this partner could save approximately £104,400 annually in SMS costs alone, and that’s not accounting for further reductions in operational and compliance expenses.

Long-term partnership

The success of our integrations often leads to a lasting partnership, with Acudo continuing to evolve alongside organisations’ growing global needs