# Syniverse, contact us: Phone validation API

> Proactively identify phone numbers that have been ported, deactivated or disconnected to keep your user record database accurate and up to date

Syniverse's Phone Number Verification plan lets you call the phone validation API. We check each provider's docs for 9 fields. Syniverse's docs list 3: Number, Validity, Porting and roaming.
We haven't run Syniverse through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
Syniverse gives this plan's price on request. We rank 1,334 plans for phone validation APIs by price. Half the plans cost $3.867 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. [UAPI's CNY 4.90 pack](https://datacircle.dev/validate-phone-apis/uapi/cny-4-90-pack/llms.txt) costs the least for 10,000 phones a month: about $0.73.
[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/syniverse/contact-us
- [Phone validation API: the best of 50+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://developer.syniverse.com/saop-docs/gendocs/SDCPricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: Docs behind sign-up
- API key: with the plan, on https://developer.syniverse.com/saop-docs/gendocs/SDCPricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://developer.syniverse.com/phone-number-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Syniverse (https://www.syniverse.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 33%
- Number: ✓
- Validity: ✓
- Porting and roaming: ✓

## Price

- Billing: contact

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Proactively identify phone numbers that have been ported, deactivated or disconnected to keep your user record database accurate and up to date

## Data

- What it checks: carrier, line in service
- Keep data: no API terms
- Use data: no API terms

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Phone Number Verification
- Who can get it: anyone who creates a profile in the Syniverse Developer Community

## The 3 fields the plan's answer can hold

phone number, ported, line status

## Syniverse's plans (1)

- [Syniverse, contact us](https://datacircle.dev/validate-phone-apis/syniverse/contact-us/llms.txt): 33% complete

## Syniverse's calls (1)

- Docs behind sign-up: [Syniverse, contact us](https://datacircle.dev/validate-phone-apis/syniverse/contact-us/llms.txt)

## Syniverse's APIs (1)

- [Syniverse: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/syniverse/contact-us/llms.txt)

## Syniverse: phone validation API alternatives

- [Trestle, contact us, Enterprise, GET /2.0/real_contact, Real Contact API](https://datacircle.dev/validate-phone-apis/trestle/contact-us-enterprise-get-2-0-real-contact-real-contact-api/llms.txt): 33% complete, stored
- [TPSClear, contact us, 1,000,000+ washes](https://datacircle.dev/validate-phone-apis/tpsclear/contact-us-1000000-washes/llms.txt): 33% complete
- [Databar, contact us](https://datacircle.dev/validate-phone-apis/databar/contact-us/llms.txt): 33% complete, stored
- [TianAPI, contact us](https://datacircle.dev/validate-phone-apis/tianapi/contact-us/llms.txt): 33% 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 2026-11-10.

- https://developer.syniverse.com/phone-number-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developer.syniverse.com/products/phone-number-verification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developer.syniverse.com/saop-docs/gendocs/QuickStartup.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developer.syniverse.com/saop-docs/gendocs/SDCPricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing