IPQualityScore Phone Validation API vs Twilio Lookup
IPQualityScore Phone Validation API
ipqualityscore.com
Twilio Lookup
twilio.comSide by side
| Figure | IPQualityScore Phone Validation API | Twilio Lookup |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 3 | 8 |
| Spec score · Phone Number Validation Software | 8.7 (#1) | 7.6 (#13) |
| Founded | 2011 | 2008 |
| Integrations | Listed integrations include WordPress, Shopify, Magento, Salesforce, HubSpot, Twilio, Stripe, PayPal, Splunk, CrowdStrike, Alloy and Accertify. | Twilio lists Salesforce, Replit, and OpenAI among its integrations. |
| Purpose | The API validates phone numbers and scores their reputation to help identify suspicious users and invalid information in real time. | Twilio Lookup is a phone number intelligence API that formats, validates, and enriches phone numbers with carrier and risk data. |
| Support | Phone-validation support is advertised seven days per week with typical responses within minutes; general contact support says replies usually arrive within hours. | Twilio links to its Help Center and offers support plans. |
Plans
IPQualityScore Phone Validation API
- FreeFree
- Phone Validation APIFree
- Phone validation usageFree
Twilio Lookup
- Formatting and validationFree
- Inbound caller identification$0.01, paid once
- Line Status$0.01, paid once
- Line type intelligence$0.01, paid once
- Reassigned number risk$0.02, paid once
- SMS Pumping Risk Score$0.03, paid once
- Identity match$0.10, paid once
- SIM swap and call forwardingPriced on request
In their own words
IPQualityScore Phone Validation API
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.
Twilio Lookup
Twilio Lookup is an API for formatting and validating phone numbers and enriching them with carrier and risk information. It can screen numbers before actions such as sending an OTP, creating an account, or processing a high-risk action. Available signals include line type and status, identity match, SIM swap detection, call forwarding, reassigned-number checks, caller name, and SMS pumping risk scoring. Lookup can also return active consent information alongside number details to help improve contact rates and message deliverability. Twilio provides API examples using helper libraries for Node.js, Python, C#, and Java, and lists Salesforce, Replit, and OpenAI as integrations. Twilio describes pairing Lookup with Verify to reduce fraud risk and improve OTP conversions. Lookup provides passive risk intelligence; it is not a standalone challenge-response authentication mechanism. Caller name is available only in the US, and call forwarding status only in the UK. Formatting and validation are free; other listed capabilities have per-request or per-query charges, while SIM swap and call-forwarding pricing is based on carrier access rates and enterprise agreements.