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Numlookup API vs Phone Specification API

Two free Phone APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

  • Choose Numlookup API if you want faster responses.
  • Choose Phone Specification API if you want to start without an API key, to call it from browser JavaScript.

Side by side

Numlookup APIPhone Specification API
What it doesPhone number validation and carrier lookup API with global coverage.Rest Api for Phone specifications.
Providernumlookupapi.comazharimm
API keyRequiredNot needed
HTTPSYesYes
CORS (browser calls)UnknownYes
Status todayOnline · 495 msOnline · 795 ms
Uptime (30 days)UpUp
Developer ratingNot rated yetNot rated yet
PriceFree / free tierFree / free tier
Numlookup docs ↗Phone Specification docs ↗

About each API

Numlookup logoNumlookup API

Phone number validation and carrier lookup API with global coverage.

Number lookup API for 230+ countries: validate phone numbers, get the carrier, line type and VoIP flag, and format them to E.164. 100 free requests a month.

Strengths

  • HTTPS

Ratings, reviews and FAQ →

Phone Specification logoPhone Specification API

Rest Api for Phone specifications.

Phone specifications API.

Strengths

  • No API key needed
  • Callable from the browser (CORS)
  • HTTPS

Ratings, reviews and FAQ →

How to choose between them

  • Prototyping or a tutorial? Pick the one that needs no API key.
  • Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
  • Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
  • Still unsure? Both are free to try: send one request to each and compare the data you get back.

Numlookup vs Phone Specification FAQ

Which needs an API key, Numlookup API or Phone Specification API?

Numlookup API requires an API key; Phone Specification API doesn't, so Phone Specification API is quicker to try.

Which can I call from the browser?

Phone Specification API supports CORS, so front-end JavaScript can call it directly. Call the other from a server.

More comparisons

Numlookup API alternatives · Phone Specification API alternatives · best Phone APIs