Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Phone Number Validation Software

numlookupapi.com vs FoneSwift Bulk Phone Validator

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score numlookupapi.com #6 in Phone Number Validation Software 8.7/10 Free plan Free plan✓ 3 of 4 features Try numlookupapi.com
FoneSwift Bulk Phone Validator #8 in Phone Number Validation Software 8.5/10 Free plan · 14-day trial Free planFree trial✓ 3 of 4 features Visit FoneSwift

numlookupapi.com leads on 1 check, FoneSwift Bulk Phone Validator on 0, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorenumlookupapi.com · 8.7/10
  • Free planboth
  • Free trialonly FoneSwift Bulk Phone Validator

numlookupapi.com scores higher on our rubric for phone number validation software: 8.7 against 8.5 out of 10; our editors rank them #6 and #8.

numlookupapi.com offers reachability data; FoneSwift Bulk Phone Validator doesn't.

numlookupapi.com is the better fit for low-cost developers using common SDKs. FoneSwift Bulk Phone Validator is the better fit for spreadsheet-based bulk validation.

  • numlookupapi.com fits best

    Low-cost developers using common SDKs

  • FoneSwift Bulk Phone Validator fits best

    Spreadsheet-based bulk validation

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature numlookupapi.com 8.7/10 Visit ↗ FoneSwift Bulk Phone Validator 8.5/10 Visit ↗
At a glance
Editor score 8.7 8.5
Ranking #6 in Phone Number Validation Software #8 in Phone Number Validation Software
Best for Low-cost developers using common SDKs Spreadsheet-based bulk validation
Pricing model Free plan + paid Free plan + paid
Starting price $9.99/mo $144/user/yr
Free plan ✓ ✓
Free trial — 14 days
Deployment Cloud Cloud, Desktop, Mobile
Platforms Web Web
Support Email Email, Live chat, Phone · 24/7
Integrations 5 integrations 41+ integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features numlookupapi.com 3/4 · FoneSwift Bulk Phone Validator 3/4
Line type data ✓ ✓
Carrier data ✓ ✓
Reachability data ✓ (best) —
Bulk validation Not checked yet ✓ (best)
Specs
Validation modes Not checked yet Batch
Monthly lookup limit 5000 lookups/mo Not checked yet
Our review
Pros
  • Free plan with 100 requests per month
  • Carrier, line-type, country, location, and format data
  • Official JavaScript, Ruby, PHP, and Python SDKs
  • CSV and XLSX uploads with automatic phone-column detection
  • Validates numbers across 200+ countries with carrier and line-type data
  • Exports cleaned results with metadata to CSV or Excel
Cons
  • Free plan is limited to 100 requests
  • Basic includes only one API key
  • Listed SDK support covers four programming languages
  • No verified reachability data in the validator
  • No dedicated validator pricing is shown
  • Integrations are tied to broader paid platform tiers
Our verdict

numlookupapi.com is a JSON REST API for validating and enriching phone numbers. It suits developers and businesses that need to check validity and retrieve phone-number details inside applications. The API returns validity status,…

Read the review →

FoneSwift Bulk Phone Validator is a web-based tool for teams that need to clean and validate phone-number lists in bulk. It accepts CSV and XLSX files, automatically detects phone-number columns, handles mixed formats, identifies…

Read the review →
  1. numlookupapi.comPhone Number Validation Software 8.7Free plan
  2. FoneSwift Bulk Phone ValidatorPhone Number Validation Software 8.5Free plan · 14-day trial

Strengths and trade-offs

  • numlookupapi.com — where it wins

    • Free plan with 100 requests per month
    • Carrier, line-type, country, location, and format data
    • Official JavaScript, Ruby, PHP, and Python SDKs

    Where it doesn't

    • Free plan is limited to 100 requests
    • Basic includes only one API key
    • Listed SDK support covers four programming languages

  • FoneSwift Bulk Phone Validator — where it wins

    • CSV and XLSX uploads with automatic phone-column detection
    • Validates numbers across 200+ countries with carrier and line-type data
    • Exports cleaned results with metadata to CSV or Excel

    Where it doesn't

    • No verified reachability data in the validator
    • No dedicated validator pricing is shown
    • Integrations are tied to broader paid platform tiers

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