# Fortytwo, contact us, NVS: Phone validation API

> Our Number Validation Service is a powerful tool for keeping your database up to date. We offer two services namely NVS and NVS Plus which outputs information such as phone state, roaming and ported.

Fortytwo's NVS plan lets you call the phone validation API. We check each provider's docs for 9 fields. Fortytwo's docs list 3: Number, Validity, Carrier.
We haven't run Fortytwo through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
Fortytwo gives this plan's price on request. We rank 1,266 plans for phone validation APIs by price. Half the plans cost $3.55 or less per 1,000 phones.
[GuGuData's CNY 124 (about $19) monthly plan](https://datacircle.dev/validate-phone-apis/gugudata/cny-124-monthly/llms.txt) 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](https://datacircle.dev/validate-phone-apis/neutrino-api/pay-as-you-go-on-demand/llms.txt) costs the least for 10,000 phones a month: $0.80.
[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), [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt) and [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/fortytwo/contact-us-nvs
- [Phone validation API: the best of 50+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://www.fortytwo.com/signup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET /`
- API key: with the plan, on https://www.fortytwo.com/signup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://www.fortytwo.com/_files/ugd/ad9b02_0405773e0a6b499186cfc476e13e125d.pdf?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#page=3
- Sold by: Fortytwo (https://www.fortytwo.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 33%
- Number: ✓
- Validity: ✓
- Carrier: ✓

## Price

- Billing: contact

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Our Number Validation Service is a powerful tool for keeping your database up to date. We offer two services namely NVS and NVS Plus which outputs information such as phone state, roaming and ported.

## Data

- Freshness: live
- What it checks: carrier
- Keep data: no limit
- Use data: The Service is offered only to business entities for commercial use and shall not be utilised for any personal use. [...] The User shall not utilise and shall ensure that no other third party uses the Service: 5.1.1 for storing, reproducing, transmitting or communicating any Unsolicited Traffic or spam of offending nature such as, but not limited to, pornography, war or illegal drugs, or 5.1.2 fraudulently or for any criminal purpose or in a manner that is contrary to any regulatory or legal requirement, or 5.1.3 to cause annoyance, inconvenience or needless anxiety to any person, or 5.1.4 in breach of any law, regulation, code of practice, Fortytwo’s or relevant service provider’s acceptable use policy, or 5.1.5 in an abusive, indecent, defamatory, obscene or menacing manner, or 5.1.6 in an otherwise offensive manner, or in breach of confidence, IPR, privacy or any right of a third party, 5.1.7 contrary to instructions that Fortytwo may reasonably give to the User, or 5.1.8. to transmit any electronic material (including viruses) through the Service, which shall cause or is likely to cause detriment or harm, in any degree, to computer systems owned by Fortytwo or Recipients.

## Plan

- Expires: 12 months

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: number
- Method: GET
- Path: /

## About the plan

- Plan: NVS
- Who can get it: business entities for commercial use, with the service enabled on their account by Fortytwo on request

## The 6 fields the plan's answer can hold

phone number, MCC, MNC, lookup ID, status code, status description

## Fortytwo's plans (2)

- [Fortytwo, contact us, NVS](https://datacircle.dev/validate-phone-apis/fortytwo/contact-us-nvs/llms.txt): 33% complete, live
- [Fortytwo, contact us, NVS Plus](https://datacircle.dev/validate-phone-apis/fortytwo/contact-us-nvs-plus/llms.txt): 44% complete, live

## Fortytwo's calls (1)

- `GET /`: [Fortytwo, contact us, NVS](https://datacircle.dev/validate-phone-apis/fortytwo/contact-us-nvs/llms.txt)

## Fortytwo's APIs (1)

- [Fortytwo: phone validation API pricing, 2 plans](https://datacircle.dev/validate-phone-apis/fortytwo/contact-us-nvs/llms.txt)

## Fortytwo: phone validation API alternatives

- [GatewayAPI, contact us](https://datacircle.dev/validate-phone-apis/gatewayapi/contact-us/llms.txt): 33% complete, live
- [Ihuyi, contact us, Larger package, POST /idcard/operatorsta/Submit.json](https://datacircle.dev/validate-phone-apis/ihuyi/contact-us-post-idcard-operatorsta-submit-json/llms.txt): 33% complete, live
- [Melrose Labs, contact us](https://datacircle.dev/validate-phone-apis/melrose-labs/contact-us/llms.txt): 33% complete, live
- [PhoneVerify, contact us](https://datacircle.dev/validate-phone-apis/phoneverify/contact-us/llms.txt): 33% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-08.

- https://www.fortytwo.com/_files/ugd/ad9b02_0405773e0a6b499186cfc476e13e125d.pdf?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.fortytwo.com/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.fortytwo.com/signup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.fortytwo.com/terms-of-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing