IPQualityScore Phone Validation API

ipqualityscore.com

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Spec score 8.7 #1 of 25 in Phone Number Validation Software

What it is

IPQualityScore Phone Validation API validates phone numbers and scores their reputation to help identify suspicious users and invalid information in real time. It checks syntax, active connection status, carrier, line type, porting, and disconnection status, and analyzes reputation and abusive-behavior history. Coverage includes countries, carriers, and line types such as mobile, landline, VOIP, toll-free, and virtual numbers; detection includes disposable, temporary SMS, and VOIP numbers. Reverse lookups can return a subscriber or business name, with the product page reporting around 90% hit rates for most US and Canadian numbers. Queries return JSON or XML, and users can upload lists through a dashboard for batch processing. Salesforce and HubSpot integrations are listed. The API documentation advises providing at least 10 digits or a valid country for best results with short numbers. The free plan includes 1,000 lookups per month; paid access starts at $99/mo, with volume-tiered rates and no monthly contracts. A free trial is also available. The product page says support is available seven days a week, with typical responses within a few minutes.

Spec sheet

What it does: The service validates phone numbers in real time and assigns reputation and fraud-risk signals for user, lead, application and payment screening.Read 15 Oct 2026 · ipqualityscore.com
Purpose: The API validates phone numbers and scores their reputation to help identify suspicious users and invalid information in real time.Read 2 Oct 2026 · ipqualityscore.com
Integrations: Listed integrations include WordPress, Shopify, Magento, Salesforce, HubSpot, Twilio, Stripe, PayPal, Splunk, CrowdStrike, Alloy and Accertify.Read 15 Oct 2026 · ipqualityscore.com
Support: Phone-validation support is advertised seven days per week with typical responses within minutes; general contact support says replies usually arrive within hours.Read 15 Oct 2026 · ipqualityscore.com
Headquarters: Las Vegas, Nevada, USARead 28 Sep 2026 · ipqualityscore.com
Founded: 2011Read 28 Sep 2026 · ipqualityscore.com
Accuracy claim: IPQS says its data scientists maintain over 99% accuracy analyzing user data including US, Canadian, and international phone numbers.Read 2 Oct 2026 · ipqualityscore.com
Add-on limits: Active-line, DNC, identity, associated-email, TCPA and phone-recycling signals require account upgrades or optional add-ons; DNC coverage is limited to the US and Canada.Read 15 Oct 2026 · ipqualityscore.com
API controls: Requests support country selection, strictness levels from 0 to 2, custom tracking variables and a fraud-reporting endpoint.Read 15 Oct 2026 · ipqualityscore.com
API formats: The public API exposes JSON and XML endpoints and accepts API keys in URLs, GET or POST parameters, or the IPQS-KEY header.Read 15 Oct 2026 · ipqualityscore.com
API input note: The API documentation advises supplying at least 10 digits or a valid country for best results with short numbers.Read 2 Oct 2026 · ipqualityscore.com
Bulk validation: Users can upload CSV lists for batch phone validation and reputation analysis.Read 15 Oct 2026 · ipqualityscore.com
Company identity: The legal entity is IPQualityScore LLC, a privately held company founded in 2011 and headquartered in Las Vegas, Nevada.Read 15 Oct 2026 · crunchbase.com
Company size: LinkedIn lists IPQS as having 51–200 employees.Read 15 Oct 2026 · linkedin.com
Coverage: IPQS says its phone validation supports all countries, carriers, and line types, including mobile, landline, VOIP, toll-free, and virtual numbers.Read 2 Oct 2026 · ipqualityscore.com
Data retention: The privacy policy says submitted fraud-service data is generally retained for about one year before deletion or de-identification.Read 15 Oct 2026 · ipqualityscore.com
Developer examples: The getting-started documentation includes request examples and code samples for PHP, Python and other HTTP clients.Read 15 Oct 2026 · ipqualityscore.com
Disposable and VOIP detection: The product identifies disposable, temporary-SMS and VOIP numbers and can flag prepaid lines.Read 15 Oct 2026 · ipqualityscore.com
HLR status: Optional HLR and carrier data can indicate whether a number is active, ported or disconnected.Read 15 Oct 2026 · ipqualityscore.com
Identity enrichment: Reverse lookups can return a subscriber or business name, with the product page reporting around 90% hit rates for most US and Canadian numbers.Read 2 Oct 2026 · ipqualityscore.com
International coverage: The API supports landline and cellular numbers in more than 150 countries and covers all stated carrier and line types.Read 15 Oct 2026 · ipqualityscore.com
Limit: Capterra users: Complaints include a large pricing gap between free and enterprise options, a learning curve, limited analytics and requests for geolocation fields.Read 15 Oct 2026 · capterra.pt
Limit: G2 users: Reviewers mention occasional import delays, integration effort, limited integrations and pricing that can be heavy for small organizations.Read 15 Oct 2026 · g2.com
Limit: Trustpilot users: Repeated complaints allege false phishing or proxy labels, inaccurate risk scores, depleted credits, account restrictions and poor responses to disputes.Read 15 Oct 2026 · trustpilot.com
Limit: WordPress plugin: Plugin reviewers report that it blocked a site and can conflict with caching plugins.Read 15 Oct 2026 · wordpress.org
Outage history: The official status page records a September 15, 2026 regional error-rate incident and an August 9–10, 2026 regional network outage.Read 15 Oct 2026 · status.ipqualityscore.com
Praise: Capterra users: Capterra reviewers cite quick API integration, accurate fraud detection, useful support, affordability and a free test account.Read 15 Oct 2026 · capterra.pt
Praise: G2 users: Reviewers repeatedly praise the understandable dashboard, broad fraud signals, accurate detection and responsive support.Read 15 Oct 2026 · g2.com
Praise: Trustpilot users: Positive reviewers mention communication, quick API responses, aggregated data, customer service and easy Everflow integration.Read 15 Oct 2026 · trustpilot.com
Rating on Capterra: 4.9 out of 5 from 19 reviewsRead 15 Oct 2026 · capterra.pt
Rating on Chrome Web Store: 3.8 out of 5 from 6 ratingsRead 15 Oct 2026 · chromewebstore.google.com
Rating on G2: 4.6 out of 5 from 114 reviewsRead 15 Oct 2026 · g2.com
Rating on GetApp: 4.9 out of 5 from 19 verified reviewsRead 15 Oct 2026 · getapp.com
Rating on Software Advice: 4.9 out of 5 from 19 reviewsRead 15 Oct 2026 · softwareadvice.co.uk
Rating on Trustpilot: 2.6 out of 5 from 59 reviewsRead 15 Oct 2026 · trustpilot.com
Rating on WordPress plugin directory: 4.3 out of 5 from 11 reviewsRead 15 Oct 2026 · wordpress.org
Recent product news: A September 28, 2026 announcement expanded integrations with Alloy, Accertify, Shopify, Salesforce, HubSpot, Splunk, CrowdStrike, Stripe and PayPal.Read 15 Oct 2026 · globenewswire.com
Returned data: Responses can include validity, activity, carrier, line type, location, owner name, leaked status, spam reports, DNC status and SMS-pumping indicators.Read 15 Oct 2026 · ipqualityscore.com
Risk detection: The service analyzes reputation and abusive behavior history and can detect disposable numbers, VOIP lines, and temporary SMS numbers.Read 2 Oct 2026 · ipqualityscore.com
Risk score: The response includes a 0–100 fraud score; documentation classifies scores of 75 or more as suspicious, 85 or more as risky and 90 or more as high risk.Read 15 Oct 2026 · ipqualityscore.com
Scale claim: IPQS reports more than 500 million phone lines validated per month and over 25 phone-validation data points.Read 15 Oct 2026 · ipqualityscore.com
SDKs and deployment: The maker advertises Android, iOS, Flutter and Unity SDKs, REST APIs, batch processing, plugins and on-premise data options.Read 15 Oct 2026 · ipqualityscore.com
Security and compliance: The company page displays SOC 2 Type II and ISO 27001 compliance or certification badges and a FIDO membership badge.Read 2 Oct 2026 · ipqualityscore.com
Security programs: IPQS says its API processing operates under SOC 2 Type II and ISO 27001 programs and that its privacy practices align with GDPR, CCPA and VCDPA.Read 15 Oct 2026 · ipqualityscore.com
Users: The product page names lead generation, marketers, call centers, data providers, SaaS services, ecommerce retailers, developers, and financial institutions as users.Read 2 Oct 2026 · ipqualityscore.com
Validation checks: It performs hundreds of syntax and reputation checks, including formatting, carrier, line type and country checks.Read 15 Oct 2026 · ipqualityscore.com
Validation signals: Checks include number syntax, active connection status, carrier, line type, porting, and disconnected status.Read 2 Oct 2026 · ipqualityscore.com

Plans and prices

Free Free free forever; credits renew monthly up to 1,000 lookups/month · API access · CSV uploads · live lookup tools Read 15 Oct 2026 · ipqualityscore.com

Phone Validation API Free Average per-user lookup price; monthly volume tiered flat-rate pricing; no monthly contracts 1,000 free lookups per month · rates decrease with monthly volume · additional DNC scrubbing and TCPA litigator checks available Read 2 Oct 2026 · ipqualityscore.com

Phone validation usage Free average per user; no monthly contract tiered flat-rate pricing across countries · volume discounts Read 15 Oct 2026 · ipqualityscore.com

Every IPQualityScore Phone Validation API plan and price →

Strong points and limits

Strong points

Supports numbers across countries, carriers, and line types.
Returns results in JSON or XML.
Dashboard supports batch list processing.
Free plan includes 1,000 lookups per month.
Salesforce and HubSpot integrations are listed.

Limits

Paid access starts at $99/mo.
Short numbers work best with 10 digits or a valid country.
Pricing is tiered by monthly lookup volume.

Who it suits

It may suit developers and organizations handling phone data, including marketers, call centers, SaaS services, ecommerce retailers, and financial institutions. The API documentation's input guidance is relevant when validating short numbers.

IPQualityScore Phone Validation API in depth

Read the full write-up

Overview

IPQualityScore Phone Validation API combines phone-number checks with reputation scoring for businesses screening sign-ups, leads, or customer records. It is best suited to teams that need both real-time API checks and bulk list cleanup. The risk signals and enrichment go beyond basic validation, but the 1,000-lookup monthly free allowance is limited for sustained use.

Key features

Checks cover syntax, active connection status, carrier, line type, porting, and disconnection. Reputation analysis adds abusive-behavior history and can flag disposable numbers, VOIP lines, and temporary SMS numbers. That makes the API more useful for fraud and lead screening than a tool that only confirms whether a number is formatted plausibly.

IPQS says coverage spans all countries, carriers, and mobile, landline, VOIP, toll-free, and virtual numbers. Reverse lookups can return a subscriber or business name; IPQS reports around 90% hit rates for most US and Canadian numbers. That is useful enrichment for those markets, but the stated hit rate should not be assumed for other regions.

Real-time queries return JSON or XML. For list cleanup, dashboard uploads support batch processing that IPQS says typically takes a few minutes. Salesforce and HubSpot integrations can bring phone or user-validation signals into those workflows. For short numbers, the API documentation advises supplying at least 10 digits or a valid country to improve results.

IPQS says its data scientists maintain over 99% accuracy analyzing user data, including US, Canadian, and international phone numbers. That is a company claim rather than a guarantee for every number or use case. The company also displays SOC 2 Type II and ISO 27001 compliance or certification badges and a FIDO membership badge. Support is available seven days a week, with typical response times within a few minutes.

Pricing

The Phone Validation API plan shows free and includes 1,000 free lookups per month. Pricing is based on average per-user lookup cost, with monthly volume-tiered flat rates that decrease as volume rises; IPQS says there are no monthly contracts. Paid pricing starts at $99/mo, and the plan’s monthly lookup limit is 5,000 lookups/mo. This entry point suits teams with regular screening needs, but the free allowance is better treated as a small-scale evaluation or low-volume option than as a broad production quota.

Additional DNC scrubbing and TCPA litigator checks are available. Those checks may suit businesses that need those specific screening signals, but the core validation plan does not make them part of its included lookup features. A free trial is also offered.

Platforms

The product supports API and web access: developers can submit real-time queries, while users can upload batches through the dashboard. JSON and XML responses give API workflows two output formats.

Who it's for

Lead-generation teams, marketers, call centers, data providers, SaaS services, ecommerce retailers, developers, and financial institutions are among the named users. It is a particularly strong fit when a team needs to combine contact-data validation with reputation signals or move between API checks and dashboard-based batch processing. It is less compelling for occasional, low-volume lookups where a 1,000-per-month free cap is sufficient and the broader risk signals are unnecessary.

Pros and cons

Pros: Combines connectivity, carrier, and line-type checks with reputation screening, including disposable and temporary SMS number detection.

Pros: Offers reverse lookup, batch uploads, real-time API responses, and Salesforce and HubSpot integrations, supporting several validation workflows.

Pros: Coverage includes many line types and countries, while the free allowance gives teams a way to begin without a paid plan.

Cons: The 1,000-lookup monthly free allowance is modest for high-volume teams; paid access starts at $99/mo.

Cons: The reported reverse-lookup hit rate is around 90% for most US and Canadian numbers, not a stated rate across all markets.

Cons: Short-number results depend on better input context; IPQS advises providing at least 10 digits or a valid country.

Alternatives

Phone Number Validation Software is a useful starting point for comparing products in this category. Consider Veriphone if its free plan’s 1,000 monthly validations, full carrier and line-type data, and bulk CSV are a closer fit. Numverify is another API option, with a Basic Plan at $14.99 a month for 5,000 API requests. For prepaid lookup bundles, HLR Lookup offers 2,500 lookups for $16.55, paid once. numlookupapi.com has a Basic plan at $9.99 a month for 5,000 requests and batch validation. PhoneValidationAPI offers a Basic plan at $14.99 a month for 6,000 API requests per month. Vonage SMS API is an alternative when the need is an SMS API. Abstract Email Validation API validates email rather than phone numbers, while Accessibility Test Framework for Android is an Android accessibility-testing alternative.

Verdict

Choose IPQualityScore Phone Validation API if your team needs more than number formatting checks: its combination of reputation analysis, reverse lookup, batch processing, and API access is the central advantage. Look elsewhere if your main constraint is a low-cost, high-volume quota; its free cap is 1,000 lookups per month and paid pricing starts at $99/mo.

Verdict

The API combines number validation with reputation signals, reverse lookups, and batch processing. Its free allowance is 1,000 lookups per month, while paid pricing starts at $99/mo and varies by volume.