fourzerotwo pricing: phone validation API
Is fourzerotwo yours? Write to us about this page. We invite selected tool providers to our WhatsApp group.
22% complete: 2 of the 9 fields on our checklistSee the 9 fields
$0.00per 1,000 phonesWe haven't run fourzerotwo through our phone validation API benchmark yet.This plan is free. We rank 1,398 plans for phone validation APIs by price. Half the plans cost $3.518 or less per 1,000 phones. See the best free phone validation API plan.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. Keyronne's pay-as-you-go plan costs the least for 10,000 phones a month: $0.20.Trestle, Signal House and Data247 are the best phone validation API providers in the Datacircle benchmark.
Plan: Free key one of fourzerotwo's 5 plans
- FreeFree key$0.00 per 1,000
- Pay as you gox402 pay per call$0.50 per 1,000
- $5 packCard credit $5$0.50 per 1,000
- $20 packCard credit $20$0.50 per 1,000
- $50 packCard credit $50$0.50 per 1,000
Call:
GET / fourzerotwo's only call for this APIAPI: Phone validation API one of fourzerotwo's 8 APIs
- Business verification API
- Company discovery API
- Company enrichment API
- Domain WHOIS API
- Email verification API
- Phone validation API
- Web scraping API
- IP company lookup API
GET /v1/ ip-geolocation/ batch - IP company lookup API
GET /v1/ ip-geolocation/ lookup - IP company lookup API
GET /v1/ domains/ ip-owner - IP company lookup API
GET /v1/ ip-geolocation/ asn
About this item
- Freshness. We don't know how fresh this plan's data is.
- 2 of the 9 fields on our checklist. Formats, Type.
- Nothing to pay. You get up to 15,000 calls a month.
- One call. You send
numbertoGET /.v1/ validators/ uk-phone - Who can get it: anyone with an email address. Keep data: no API terms. Use data: Keep the attribution when you show the data..
fourzerotwo: phone validation API alternatives
fourzerotwo alternatives: other phone validation API providers by price
The table starts with fourzerotwo's cheapest paid plan. Next come plans from other providers with the price per 1,000 phones closest to fourzerotwo's.
| fourzerotwo, pay as you go | ReefAPI, $450 quarterly, Enterprise quarterly, POST /phone-validate/v1/validate | APIFreaks, $20 pack, One-Off 80,000 credits, POST /phone/validation/bulk | Temsor, $10 pack | The Blacklist Alliance, $3,500 monthly | |
|---|---|---|---|---|---|
| $ per 1,000 phones | $0.50 | $0.50 | $0.50 | $0.50 | $0.50 |
| Completeness | 22% | 67% | 67% | 44% | 44% |
| Billing | pay as you go | quarterly | pay first | pay first | monthly |
| Pay | per call | $450 | $20 | $10 | $3,500 |
| Enough for | as many as you pay for | 300,000 calls a month | 40,000 results | 20,000 calls | 7,000,000 calls a month |
| Freshness | unknown | stored | stored | unknown | unknown |
| Who can get it | anyone with a wallet paying each call in USDC through x402 on Base, with no account or API key | anyone | anyone 13 or older with a real company or personal email, not for gambling, adult content, dating or the alcohol industry | businesses, for use in their trade or business (the terms: a digital service offered to businesses, not to consumers) | a legal entity: the Subscriber is “the legal entity for which a Blacklist Alliance subscription plan was purchased” |
Sources
From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10.
Product details
The key fields this plan's answer can hold, then each filled column in its row on the sheet.
- Number, not in the answer
- Formats
- Validity, not in the answer
- Type
- Carrier, not in the answer
- Porting and roaming, not in the answer
- Place, not in the answer
- Risk, not in the answer
- Owner, not in the answer
| $ per 1,000 phones | $0.00 |
|---|---|
| Per | call |
| Billing | free |
| Aggregators | none |
|---|
| Also pays for | from the same budget: 529 other fourzerotwo calls: 500 a day |
|---|
| $ per 1,000 calls that find nothing | $0.00 |
|---|
| Their pitch | Classify a UK number (mobile, landline, freephone, premium…) and format as E.164. |
|---|
| Countries | United Kingdom |
|---|---|
| What it checks | numbering plan |
| Keep data | no API terms |
| Use data | Keep the attribution when you show the data. |
| Pay | $0 |
|---|---|
| Enough for | 15,000 calls a month |
| Per day | 500 |
|---|---|
| Batch | 1 |
| Answer | in the call |
|---|
| You send | number |
|---|---|
| Method | GET |
| Path | /v1/validators/uk-phone |
| Plan | Free key |
|---|---|
| Who can get it | anyone with an email address |
The 2 fields the plan's answer can hold
line type, E.164 format