Datacircle

Foundry pricing: phone validation API

Foundry's siteThis page as plain textPhone validation API: the best of 50+ providers comparedFoundry: phone validation API alternatives

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67% complete: 6 of the 9 fields on our checklistSee the 9 fields
$1.00per 1,000 phonesWe haven't run Foundry through our phone validation API benchmark yet.We rank 1,283 plans for phone validation APIs by price. Half the plans cost $3.60 or less per 1,000 phones. This plan costs less per 1,000 phones than 67% of the 1,283 plans.GuGuData's CNY 124 (about $19) monthly plan is the cheapest paid plan per 1,000 phones. GuGuData's CNY 124 (about $19) monthly plan charges nothing per call. You get as many phones as GuGuData's rate limit allows. Neutrino API's On-Demand plan costs the least for 10,000 phones a month: $0.80.Trestle, Data247 and Abstract API are the best phone validation API providers in the Datacircle benchmark.
Type a number to see the cheapest Foundry plan for that many phones. The table below then sorts the other plans by what each costs.
Plan: x402 pay per call Foundry's only plan
Call: POST /v1/phone-validate Foundry's only call for this API
API: Phone validation API one of Foundry's 7 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 6 of the 9 fields on our checklist. Number, Formats, Validity, Type, Carrier, Place.
  • Nothing to buy first. You pay per call.
  • One call. You send input to POST /v1/phone-validate. The call returns whether the number is valid.
  • Who can get it: with conditions. Keep data: no API terms. Use data: no API terms.

Foundry: phone validation API alternatives

Foundry alternatives: other phone validation API providers by price

We list other providers' plans closest to this plan in price per 1,000 phones.

This planFoundry, pay as you goCallerAPI, $12,000 monthly, Enterprise transparency $12,000, GET /api/lookup/{phone}ReefAPI, $50 monthly, Ultra monthly, POST /phone-validate/v1/validateDomScan, $10 pack, 10,000 credits, POST /v1/phone/validate/bulkapipick, $5 pack, 5,000 credits, POST /api/check-china-phone
$ per 1,000 phones$1.00$1.00$1.00$1.00$1.00
Completeness67%78%67%67%33%
Billingpay as you gomonthlymonthlypay firstpay first
Payper call$12,000$50$10$5
Enough foras many as you pay for12,000,000 calls a month50,000 calls a month10,000 results5,000 calls
Freshnessunknownstoredstoredstoredunknown
Who can get itanyone with a wallet paying each call in USDC on Base (x402), with no account or API keyanyone who agrees terms with CallerAPI sales ("Exact terms are set in your agreement")anyoneanyoneanyone

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-09.

  1. api.cdp.coinbase.com/platform/v2/x402/discovery/resources
  2. minty-sprout.onrender.com
  3. minty-sprout.onrender.com/.well-known/x402
  4. minty-sprout.onrender.com/llms.txt
  5. minty-sprout.onrender.com/openapi.json

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Number
  • Formats
  • Validity
  • Type
  • Carrier
  • Porting and roaming, not in the answer
  • Place
  • Risk, not in the answer
  • Owner, not in the answer
Price
$ per 1,000 phones$1.00
Percall
Billingpay as you go
Aggregators
Aggregatorsnone
Charges
Also pays fornothing else
Not found
$ per 1,000$0.00
In their words
Their pitchPhone number validator: validity, E.164 and international format, type, region, carrier and timezone. Input: '+44 20 7946 0958'.
Data
What it checksnumbering plan
Keep datano API terms
Use datano API terms
Plan
Payper call
Rate limit
Per second0.5
Batch1
Speed
Answerin the call
The call
You sendinput
MethodPOST
Path/v1/phone-validate
About the plan
Planx402 pay per call
Who can get itanyone with a wallet paying each call in USDC on Base (x402), with no account or API key
The 11 fields the plan's answer can hold

phone number, valid, possible, E.164 format, international format, country calling code, region, location, line type, carrier, timezones

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