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Head-to-head · Phone Number Validation Software

Abstract Phone Validation API vs IPQualityScore Phone Validation API

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Abstract Phone Validation API #2 in Phone Number Validation Software 9.2/10 Free plan Free plan✓ 4 of 4 features Visit Abstract API
IPQualityScore Phone Validation API #9 in Phone Number Validation Software 8.4/10 Free plan Free plan✓ 4 of 4 features Visit IPQualityScore

Abstract Phone Validation API leads on 1 check, IPQualityScore Phone Validation API on 0, and 6 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAbstract Phone Validation API · 9.2/10
  • Lowest starting priceAbstract Phone Validation API · $17/mo
  • Free planboth

Abstract Phone Validation API scores higher on our rubric for phone number validation software: 9.2 against 8.4 out of 10; our editors rank them #2 and #9.

Abstract Phone Validation API is cheaper to start at $17/mo against $99/mo.

Abstract Phone Validation API is the better fit for teams needing integrations and rich API data. IPQualityScore Phone Validation API is the better fit for fraud and risk screening teams.

  • Abstract Phone Validation API fits best

    Teams needing integrations and rich API data

  • IPQualityScore Phone Validation API fits best

    Fraud and risk screening teams

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Side by side

Feature Abstract Phone Validation API 9.2/10 Visit ↗ IPQualityScore Phone Validation API 8.4/10 Visit ↗
At a glance
Editor score 9.2 8.4
Ranking #2 in Phone Number Validation Software #9 in Phone Number Validation Software
Best for Teams needing integrations and rich API data Fraud and risk screening teams
Pricing model Free plan + paid Free plan + paid
Starting price $17/mo (best) $99/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Support Email, Live chat, Phone · 24/7 Phone, Docs
Compliance SOC 2, GDPR, SSO/SAML SOC 2, ISO 27001, GDPR
Integrations 15 integrations 10 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Abstract Phone Validation API 4/4 · IPQualityScore Phone Validation API 4/4
Line type data ✓ ✓
Carrier data ✓ ✓
Reachability data ✓ ✓
Bulk validation ✓ ✓
Specs
Validation modes Api Not checked yet
Monthly lookup limit 5000 lookups/mo 5000 lookups/mo
Our review
Pros
  • Returns carrier, line-type, location, formatting, and risk data
  • Supports REST API integrations across major business platforms
  • Free plan includes validation and 100 requests per month
  • Risk, reputation, disposable-number, and reachability checks
  • Detects mobile, landline, VoIP, toll-free, and virtual lines
  • Supports API lookups, CSV uploads, and broad integrations
Cons
  • Bulk CSV upload is limited to paid plans
  • API-only access may not suit non-technical workflows
  • The verified monthly lookup limit is 5,000
  • Startup pricing begins at $99 per month
  • Listed monthly lookup limit is 5,000
  • Advanced capabilities require higher-tier or Enterprise plans
Our verdict

Abstract Phone Validation API checks phone numbers in real time through a REST API. It is designed for teams that need to clean contact data, support registration checks, or use phone characteristics in messaging workflows. Depending on…

Read the review →

IPQualityScore Phone Validation API verifies phone numbers through real-time API lookups and bulk CSV validation. It returns validation, activity, carrier, line-type, location, identity, risk, and reputation signals, including checks for…

Read the review →
  1. Abstract Phone Validation APIPhone Number Validation Software 9.2Free plan
  2. IPQualityScore Phone Validation APIPhone Number Validation Software 8.4Free plan

Strengths and trade-offs

  • Abstract Phone Validation API — where it wins

    • Returns carrier, line-type, location, formatting, and risk data
    • Supports REST API integrations across major business platforms
    • Free plan includes validation and 100 requests per month

    Where it doesn't

    • Bulk CSV upload is limited to paid plans
    • API-only access may not suit non-technical workflows
    • The verified monthly lookup limit is 5,000

  • IPQualityScore Phone Validation API — where it wins

    • Risk, reputation, disposable-number, and reachability checks
    • Detects mobile, landline, VoIP, toll-free, and virtual lines
    • Supports API lookups, CSV uploads, and broad integrations

    Where it doesn't

    • Startup pricing begins at $99 per month
    • Listed monthly lookup limit is 5,000
    • Advanced capabilities require higher-tier or Enterprise plans
  • Abstract Phone Validation API9.2/10 · Free plan

    A data-rich phone validation API with broad integrations and a free starting point.

    Visit Abstract APIFull verdict →
  • IPQualityScore Phone Validation API8.4/10 · Free plan

    A broad fraud-screening API with useful enrichment, but a high entry price and lookup limits.

    Visit IPQualityScoreFull verdict →

More comparisons

All phone number validation software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update