Datacircle
Phone validation API

NumLookupAPI, free

NumLookupAPI's sitellms.txt
$0.00per 1,000 phones
Plan: Free one of NumLookupAPI's 8 plans
Call: GET /v1/validate/{number} NumLookupAPI's only call

About this item

  • Stored. You may get NumLookupAPI's answer from an earlier check of the number. NumLookupAPI's pages don't say how old its answers are.
  • Nothing to pay. You get 100 requests a month, enough for 100 calls a month.
  • One call. You send number, country_code to GET /v1/validate/{number}. The call returns whether the number is valid.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

Compare with similar plans

Other providers' plans with the closest prices per 1,000. Like this plan, each is a stored copy.

This planNumLookupAPI, freeAPILayer, freeMelissa, $4.97 packTrestle, freeVeriphone, free
$ per 1,000$0.00$0.00$0.00$0.00$0.00
Billingfreefreepay firstfreefree
Pay$0$0$4.97$0$0
Enough for100 calls a month100 calls a month100 calls a month25 calls, once1,000 calls a month
Freshnessstoredstoredstoredstoredstored
Who can get itanyoneanyone, for non-commercial use onlyanyone who passes Melissa's KYC/AML identity checkcompanies, with a business email addressanyone with a verified email address

Sources

From each provider's own pricing page and docs. We read this row from these pages on 2026-10-14.

  1. api.numlookupapi.com/v1/agent/plans
  2. numlookupapi.com/
  3. numlookupapi.com/agents.md
  4. numlookupapi.com/docs/openapi.yaml
  5. numlookupapi.com/docs/rate-limit/
  6. numlookupapi.com/docs/validate/
  7. numlookupapi.com/pricing/
  8. numlookupapi.com/products/hlr-lookup-api/
  9. numlookupapi.com/terms-of-service/

Product details

We list each column of this plan's row on the sheet that has a value.

Price
$ per 1,000$0.00
Billingfree
Charges
Percall
Not found
$ per 1,000$0.00
In their words
Their pitchNumber lookup API for 230+ countries: validate phone numbers, get the carrier, line type and VoIP flag, and format them to E.164.
Data
Freshnessstored
Keep datano limit
Use datalawful use, for the service's intended purposes, the service not reproduced or resold without written approval
Plan
Pay$0
You get100 requests a month
Enough for100 calls a month
Rate limit
Per second0.17
Batch1
Speed
Answerin the call
The call
You sendnumber, country_code
MethodGET
Path/v1/validate/{number}
About the plan
PlanFree
Who can get itanyone
The 16 fields in the plan's answer

valid, phone number, local format, international format, country calling code, country code, country, location, carrier, line type, E.164 format, national format, RFC 3966 format, possible number, number type, time zone