# SEON, $699 monthly: Phone validation API

> Our standalone Phone API is designed to provide invaluable insights into the digital footprint associated with a phone number, such as its carrier, whether it is disposable, and the number of online profiles found when checking on more than 60 platforms.

SEON's phone validation API on its Starter plan. It returns 5 of the 9 key fields we check: Number, Validity, Type, Carrier, Risk.
We haven't run SEON through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan costs $699 a month. We rank 768 plans for phone validation APIs by price. Half the plans cost $3.60 per 1,000 phones or less.
[Botoi's $199 monthly plan](https://datacircle.dev/validate-phone-apis/botoi/199-monthly/llms.txt) is the cheapest paid plan per 1,000 phones: as little as $0.0066. Botoi's $199 monthly plan covers up to 1,000,000 phones a day.
[Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt), [Foxentry](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-extended/llms.txt) and [HLR Lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-1-1m-post-hlr-lookup/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/seon/699-monthly
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://seon.io/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://api.seon.io/SeonRestService/phone-api/v2`
- API key: with the plan, on https://seon.io/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://docs.seon.io/api-reference/phone-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: SEON (https://seon.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 56%
- Number: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Risk: ✓

## Price

- Billing: monthly
- $ a month: $699

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Our standalone Phone API is designed to provide invaluable insights into the digital footprint associated with a phone number, such as its carrier, whether it is disposable, and the number of online profiles found when checking on more than 60 platforms.

## Data

- What it checks: numbering plan, carrier
- Keep data: no limit
- Use data: Customer may use the Services and their outputs for its internal business operations, including within Customer's own products and services, to screen Customer's own Applicants, transactions, and Users. Customer may not resell the Services or provide any third party with direct access to the Services. [...] Customer may not, and may not cause or permit others to: [...] (ii) perform or disclose any benchmarking, availability or performance testing of the Cloud Services, [...] Customer may not, and may not cause or permit others to: (i) modify, make derivative works of, disassemble, decompile, reverse engineer, reproduce, republish, download, or copy any part of the Services (including any data structures or similar materials produced by the Services), (ii) access or use the Services to build or support, directly or indirectly, any product or service competitive with SEON, or (iii) license, sell, transfer, assign, distribute, outsource, permit timesharing or service bureau use of, commercially exploit, or make the Services available to any third party except as permitted by this Agreement or the applicable Order Form. [...] Customer will use the Cloud Services and their outputs only as a tool to support its own decision-making, within decision processes that operate under Customer's human oversight. [...] Customer may only use the Website and the Services for its internal business operations as permitted by the Agreement, unless otherwise authorized by SEON in writing. Except as permitted by the Agreement, Customer may not distribute any part of the Website or the Services, including but not limited to any data or content featured on the Website, in any medium without SEON's prior written authorization.

## Plan

- Pay: $699
- You get: 2,500 requests a month

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone. Optional: config.timeout, config.priority_timeout, config.priority_sites, config.include, config.flags_timeframe_days
- Method: POST
- Path: /SeonRestService/phone-api/v2

## About the plan

- Plan: Starter
- Who can get it: businesses only

## The 54 fields the plan's answer can hold

success, ID, phone, global network score, total registrations, business registrations, personal registrations, business technology registered, business technology checked, business science and education registered, business science and education checked, business jobs and employment registered, business jobs and employment checked, business money transfer and remittance registered, business money transfer and remittance checked, personal betting and gaming registered, personal betting and gaming checked, personal dating registered, personal dating checked, personal real estate registered, personal real estate checked, personal email service registered, personal email service checked, personal messenger registered, personal messenger checked, personal technology registered, personal technology checked, personal delivery registered, personal delivery checked, personal ecommerce registered, personal ecommerce checked, personal entertainment registered, personal entertainment checked, personal social media registered, personal social media checked, personal travel registered, personal travel checked, fraudulent decline first seen, fraudulent decline last seen, fraudulent decline customer hits, fraudulent decline hits, first seen, last seen, customer hits, hits, flags, flag note, flag date, flag industry, carrier, carrier country, disposable, valid phone number, line type

## SEON's plans (2)

- [SEON, $699 monthly](https://datacircle.dev/validate-phone-apis/seon/699-monthly/llms.txt): 56% complete
- [SEON, contact us](https://datacircle.dev/validate-phone-apis/seon/contact-us/llms.txt): 56% complete

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

- `POST /SeonRestService/phone-api/v2`: [SEON, $699 monthly](https://datacircle.dev/validate-phone-apis/seon/699-monthly/llms.txt)

## SEON's APIs (2)

- [SEON: email verification API pricing, 2 plans](https://datacircle.dev/validate-email-apis/seon/699-monthly/llms.txt)
- [SEON: phone validation API pricing, 2 plans](https://datacircle.dev/validate-phone-apis/seon/699-monthly/llms.txt)

## SEON: phone validation API alternatives

- [ClearoutPhone, $31 monthly, Monthly 5,000 credits, POST /v1/phonenumber/validate, Instant Phone Number Validation, smart mode](https://datacircle.dev/validate-phone-apis/clearoutphone/31-monthly-monthly-5000-credits-post-v1-phonenumber-validate-instant-phone-number-validation-smart-mode/llms.txt): 56% complete
- [Telnyx, $5,000 monthly](https://datacircle.dev/validate-phone-apis/telnyx/5000-monthly/llms.txt): 67% complete, live
- [Lookify, $199 monthly](https://datacircle.dev/validate-phone-apis/lookify/199-monthly/llms.txt): 56% complete
- [Persona, $250 monthly](https://datacircle.dev/validate-phone-apis/persona/250-monthly/llms.txt): 56% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-02.

- https://docs.seon.io/api-reference/phone-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://seon.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://seon.io/legal-and-security/legal/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://seon.io/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing