# VerifyGrid, free: Phone validation API

> Validate E.164 phone numbers, distinguish mobile vs VoIP vs landline via NANPA NPA-NXX OCN tables, and block known TCPA serial litigators prior to outbound dialing.

VerifyGrid's Sandbox Key plan for the phone validation API costs $0.00 per 1,000 phones. We check each provider's docs for 9 fields. VerifyGrid's docs list 4: Formats, Type, Carrier, Porting and roaming.
We haven't run VerifyGrid through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan is free. We rank 1,339 plans for phone validation APIs by price. Half the plans cost $2.867 or less per 1,000 phones. [297 phone validation API plans on our price sheet are free.](https://datacircle.dev/best-phone-validation-api.txt) [Trestle](https://datacircle.dev/validate-phone-apis/trestle/free/llms.txt) has a free plan with 25 calls in total. Trestle is the best phone validation API in our benchmark.
[Linq's $260 monthly plan](https://datacircle.dev/validate-phone-apis/linq/260-monthly-pro-post-v3-capability-check-imessage/llms.txt) is the cheapest paid plan per 1,000 phones. Linq's phone validation API costs nothing beyond the plan price. [Keyronne's pay-as-you-go plan](https://datacircle.dev/validate-phone-apis/keyronne/pay-as-you-go/llms.txt) costs the least for 10,000 phones a month: $0.20.
[Trestle](https://datacircle.dev/validate-phone-apis/trestle/top-up-from-10-self-serve-pay-as-you-go-get-3-0-phone-intel-phone-validation-api/llms.txt), [Signal House](https://datacircle.dev/validate-phone-apis/signal-house/top-up-from-10/llms.txt) and [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/verifygrid/free
- [Phone validation API in 2026: the best of 60+ compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://verifygrid.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://verifygrid.io/v1/verify/telecom`
- API key: with the plan, on https://verifygrid.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://verifygrid.io/tools/tcpa-dnc-phone-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: VerifyGrid (https://verifygrid.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 44%
- Formats: ✓
- Type: ✓
- Carrier: ✓
- Porting and roaming: ✓

## Price

- $ per 1,000 phones: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Verify FMCSA USDOT/MC carrier operating authority, insurance, BOC-3, and 2027 UCR · Verify 10-digit Healthcare NPI provider via D1 cache and live CMS NPPES API · Screen entity or individual against OFAC SDN, HHS OIG LEIE, SAM.gov, and EPA ECHO · Verify SEC EDGAR CIK, incorporation state, SIC code, and corporate standing · validate_email_signup

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Validate E.164 phone numbers, distinguish mobile vs VoIP vs landline via NANPA NPA-NXX OCN tables, and block known TCPA serial litigators prior to outbound dialing.

## Data

- What it checks: numbering plan
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 50 credits
- Enough for: 50 calls

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone
- Method: GET
- Path: /v1/verify/telecom

## About the plan

- Plan: Sandbox Key
- Who can get it: anyone

## The 10 fields the plan's answer can hold

E.164 format, line type, carrier name, OCN, ported, TCPA DNC listed, serial litigator flag, safe to autodial, source, provenance timestamp

## VerifyGrid's plans (4)

- [VerifyGrid, free](https://datacircle.dev/validate-phone-apis/verifygrid/free/llms.txt): $0.00 per 1,000, 44% complete
- [VerifyGrid, $49 monthly](https://datacircle.dev/validate-phone-apis/verifygrid/49-monthly/llms.txt): $1.96 per 1,000, 44% complete
- [VerifyGrid, $199 monthly](https://datacircle.dev/validate-phone-apis/verifygrid/199-monthly/llms.txt): $1.327 per 1,000, 44% complete
- [VerifyGrid, $499 monthly](https://datacircle.dev/validate-phone-apis/verifygrid/499-monthly/llms.txt): $0.998 per 1,000, 44% complete

## VerifyGrid's calls for this API (1)

- `GET /v1/verify/telecom`: [VerifyGrid, free](https://datacircle.dev/validate-phone-apis/verifygrid/free/llms.txt)

## VerifyGrid's APIs (4)

- [VerifyGrid Business verification API pricing, 4 plans](https://datacircle.dev/business-verification-apis/verifygrid/free/llms.txt)
- [VerifyGrid Company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/verifygrid/free/llms.txt)
- [VerifyGrid Email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/verifygrid/free/llms.txt)
- [VerifyGrid Phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/verifygrid/free/llms.txt)

## VerifyGrid: phone validation API alternatives

[VerifyGrid alternatives: other phone validation API providers by price](https://datacircle.dev/verifygrid-alternatives.txt)

We list VerifyGrid's cheapest paid plan first. Next we list other providers' plans closest to VerifyGrid in price per 1,000 phones.

- [VerifyGrid, $499 monthly](https://datacircle.dev/validate-phone-apis/verifygrid/499-monthly/llms.txt): $0.998 per 1,000, 44% complete
- [TCPA Litigator List, $499 monthly, API Gold, POST /scrub/phones/](https://datacircle.dev/validate-phone-apis/tcpa-litigator-list/499-monthly-api-gold-post-scrub-phones/llms.txt): $0.998 per 1,000, 33% complete, stored
- [iBlueText, $599 monthly](https://datacircle.dev/validate-phone-apis/ibluetext/599-monthly/llms.txt): $0.998 per 1,000, 11% complete, live
- [NumberVerifyAPI, $49.99 pack](https://datacircle.dev/validate-phone-apis/numberverifyapi/49-99-pack/llms.txt): $0.9998 per 1,000, 67% complete, stored
- [NumLookupAPI, $49.99 monthly, Pro, POST /v1/validate, Batch Validation](https://datacircle.dev/validate-phone-apis/numlookupapi/49-99-monthly-pro-post-v1-validate/llms.txt): $0.9998 per 1,000, 67% complete, stored

## 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.

- https://verifygrid.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://verifygrid.io/.well-known/mcp.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://verifygrid.io/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://verifygrid.io/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://verifygrid.io/tools/tcpa-dnc-phone-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing