IPQualityScore Phone Validation API

IPQualityScore Phone Validation API validates numbers while scoring reputation and adding optional identity context. It suits businesses screening sign-ups, leads, and customer records across applications and batch lists. The main draw is broad coverage with risk signals; the main caution is matching its lookup allowances and input requirements to your volume.

Overview

IPQualityScore combines phone-number validation with reputation analysis for real-time fraud and data-quality decisions. It is aimed at lead-generation teams, marketers, call centers, data providers, SaaS companies, ecommerce retailers, developers, and financial institutions. Coverage spans all countries, carriers, and major line categories, including mobile, landline, VOIP, toll-free, and virtual numbers.

IPQS was founded in 2011 and is headquartered in Las Vegas, Nevada. Its company page displays SOC 2 Type II, ISO 27001, and FIDO membership badges, which will matter to organizations evaluating vendor security posture.

Key features

Validation checks syntax, active connection status, carrier, line type, porting, and disconnected status. Reputation analysis adds abusive-behavior history and can flag disposable numbers, VOIP lines, and temporary SMS numbers. That makes the service more useful for detecting risky contacts than a formatter that only checks whether digits look valid.

Reverse lookup can return a subscriber or business name. IPQS reports around 90% hit rates for most US and Canadian numbers, giving teams useful enrichment for records in those markets. The API handles real-time queries and returns JSON or XML. Dashboard uploads support batch processing, which IPQS says typically finishes in a few minutes.

Salesforce and HubSpot integrations bring phone-validation or user-validation signals into those workflows. For short numbers, the documentation advises sending at least 10 digits or a valid country so the service can interpret the input reliably. IPQS says its data scientists maintain over 99% accuracy across US, Canadian, and international phone-number data, an assurance prospective buyers should weigh alongside their own risk tolerance.

Support is offered seven days a week, with typical response times within a few minutes. Line-type, carrier, and reachability data are included capabilities.

Pricing

The Phone Validation API plan is shown at no cost, billed using an average per-user lookup price with monthly volume-tiered flat-rate pricing. It includes 1,000 free lookups per month, has no monthly contracts, and lowers rates as monthly volume rises. The stated monthly lookup limit is 5,000 lookups per month, so higher-volume users should confirm how that cap applies to their tier. Additional DNC scrubbing and TCPA litigator checks are available.

Paid access starts at $99/mo. The free allowance is practical for pilots or small recurring checks, but 1,000 included lookups can be quickly consumed by active acquisition or verification flows. Teams approaching the 5,000-lookups-per-month limit should budget for the paid tier and account for volume-based billing rather than assuming unlimited use. A free trial is also offered.

Platforms

The service is available through an API and web dashboard. API responses in JSON or XML suit application workflows, while the web interface supports uploaded lists for batch validation.

Who it's for

This is a strong fit for organizations that need to distinguish reachable, correctly formatted numbers from disposable or abuse-associated contacts, especially when they also need carrier, line-type, reachability, or reverse-identity data. It is less suitable for a tiny, occasional lookup requirement that can stay within a simpler free quota, or for teams whose inputs frequently consist of short numbers without country context.

Pros and cons

• Pros: Broad international and line-type coverage; validation, reachability, porting, and reputation signals in one API; reverse lookup for subscriber or business context; JSON/XML responses plus dashboard bulk processing; Salesforce and HubSpot integrations; seven-day support.
• Cons: The free allowance is capped at 1,000 lookups monthly; the stated 5,000-lookups-per-month limit constrains growing usage; reverse-lookup hit-rate reporting is focused on US and Canadian numbers; short inputs need at least 10 digits or a valid country for best results; paid access starts at $99/mo.

Alternatives

Browse the Phone Number Validation Software list for a wider category comparison.

Veriphone is the closer freemium alternative when 1,000 monthly validations, full carrier and line-type data, bulk CSV, and API access meet your needs without a paid starting tier.

Choose numlookupapi.com when a $9.99/mo Basic plan with 5,000 requests, batch validation, one API key, no rate limit, and email support is a better-sized entry point.

PhoneValidationAPI suits buyers seeking a $14.99/mo Basic plan with 6,000 API requests monthly and standard email support.

Pick Numverify for an API-focused freemium option with a $14.99/mo Basic plan and 5,000 API requests.

Twilio Lookup is the alternative when you prefer usage-priced formatting, validation, and line-status lookups, including a free formatting-and-validation plan.

Use libphonenumber-js when an open-source JavaScript/TypeScript library under MIT and Apache-2.0 licenses is sufficient.

Accessibility Test Framework for Android is a free framework for Android, Linux, macOS, and Windows.

Abstract Email Validation API is aimed at email rather than phone validation.

Verdict

Choose IPQualityScore Phone Validation API if your business needs international number checks plus reputation screening, reachability and carrier data, optional reverse lookup, and both API and batch workflows. Its strongest reason to buy is the combination of fraud-oriented signals and broad line-type coverage. Look elsewhere if your workload is small, your budget is below the $99/mo paid starting point, or your expected volume exceeds the stated lookup limits without a clear tier fit.