# Trestle, free: Cached phone validation API

> Validate phone numbers worldwide, determine carrier name, line type, and prepaid status, and identify disconnected phone numbers with a phone activity score. Our international coverage ensures accurate and reliable phone data across global markets.

Trestle's cached phone validation API on its Free trial plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Number, Validity, Type, Carrier, Place.
You get up to 25 calls in all.

- This page: https://datacircle.dev/cached-phone-validation-apis/trestle/free
- Get it: https://trestleiq.com/pricing/
- Its API docs: https://docs.trestleiq.com/api-reference/phone-validation-api
- Sold by: Trestle (https://trestleiq.com)
- Checked: 2026-10-18

## In the answer

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

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: Clay: your key no Data Credits, 1 Action per call (Actions start at less than $0.01 each), paid, no fixed price · Databar: your key 0 credits a call on the Build or Scale plan, paid $49.50 · Deepline: paid $21.00 per 1,000 results · treg: your key free, paid $15.00

## Charges

- Per: call
- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Validate phone numbers worldwide, determine carrier name, line type, and prepaid status, and identify disconnected phone numbers with a phone activity score. Our international coverage ensures accurate and reliable phone data across global markets.

## Data

- Freshness: stored
- Keep data: for the duration of this Agreement
- Use data: Customer is authorized to use the Trestle Data for identity verification, lead verification, identity management, caller identification, routing, prioritization use cases, to scrub lists for outbound dialing, and/or for any additional use case(s) expressly set forth on the applicable Order. Customer will not, and shall ensure its Affiliates and Users do not: (a) use the Trestle Data for marketing purposes except to respond to an inbound request, (b) use the Trestle Data in violation of any applicable laws, rules, or regulations or in violation of any third-party right, (c) store or otherwise use the Trestle Data for purposes other than the internal business purposes of the Customer, as contemplated in the applicable Order or Customer Agreement, (d) use the Trestle Data in conjunction with activities prohibited by law, (e) store or cache the Trestle to avoid making additional Queries to the Services, (f) merge stored Trestle Data with other data unless it is coded or tagged to indicate Trestle as its source, or (g) use the Trestle Data for file download in a fixed page format (i.e., create a printable, downloadable directory of personal information). [...] Customer will not: (a) make any Services or Trestle Data available to anyone other than Customer, its Affiliates, and their respective Users, (b) use the Services or Trestle Data for the benefit of anyone other than Customer or its Affiliates, (c) resell, distribute, or otherwise disclose or make available the Services or Trestle Data [...] without the prior written consent of Trestle [...] (h) use the Services or Trestle Data to build a competitive product or service [...] Customer may not use the Services or Trestle Data in connection with any FCRA purpose

## Plan

- Pay: $0
- Enough for: 25 calls, once
- Expires: 14 days

## Rate limit

- Per second: 10
- Batch: 1

## The call

- You send: phone. Optional: phone.country_hint, add_ons, source_id
- Method: GET
- Path: /3.0/phone_intel

## About the plan

- Plan: Free trial
- Who can get it: companies, with a business email address

## The 13 fields the plan's answer can hold

phone ID, phone number, valid, activity score, country calling code, country code, country, line type, carrier, prepaid, error code, error message, warnings

## Trestle's plans (3)

- [Trestle, free](https://datacircle.dev/cached-phone-validation-apis/trestle/free/llms.txt): $0.00 per 1,000, 56% complete, stored
- [Trestle, top-up from $10](https://datacircle.dev/cached-phone-validation-apis/trestle/top-up-from-10/llms.txt): $15.00 per 1,000, 67% complete, stored
- [Trestle, contact us](https://datacircle.dev/cached-phone-validation-apis/trestle/contact-us/llms.txt): 56% complete, stored

## Trestle's calls (1)

- `GET /3.0/phone_intel`: [Trestle, free](https://datacircle.dev/cached-phone-validation-apis/trestle/free/llms.txt)

## Trestle's APIs (1)

- [Trestle: cached phone validation API pricing, 3 plans](https://datacircle.dev/cached-phone-validation-apis/trestle/free/llms.txt)

## Trestle: cached phone validation API alternatives

- [Neutrino API, free](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/free/llms.txt): $0.00 per 1,000, 67% complete, stored
- [Strale, free](https://datacircle.dev/cached-phone-validation-apis/strale/free/llms.txt): $0.00 per 1,000, 56% complete, stored
- [Botoi, free](https://datacircle.dev/cached-phone-validation-apis/botoi/free/llms.txt): $0.00 per 1,000, 44% complete, stored
- [Veriphone, free](https://datacircle.dev/cached-phone-validation-apis/veriphone/free/llms.txt): $0.00 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 2026-10-18.

- https://docs.trestleiq.com/api-reference/phone-validation-api
- https://docs.trestleiq.com/openapi/phone-validation.openapi.yaml
- https://trestleiq.com/knowledge-base/developer-portal-wallet-frequently-asked-questions/
- https://trestleiq.com/knowledge-base/getting-started-with-trestles-developer-portal-wallet/
- https://trestleiq.com/knowledge-base/how-is-trestles-phone-activity-score-calculated/
- https://trestleiq.com/knowledge-base/understanding-trestles-free-api-trial-and-the-api-access-request-process-for-specific-products/
- https://trestleiq.com/knowledge-base/what-is-our-global-phone-validation-coverage/
- https://trestleiq.com/knowledge-base/what-is-the-default-and-max-qps-supported/
- https://trestleiq.com/knowledge-base/what-queries-are-billable/
- https://trestleiq.com/knowledge-base/why-wont-my-email-work-to-signup-for-trestle/
- https://trestleiq.com/phone-validation-api/
- https://trestleiq.com/pricing/
- https://trestleiq.com/terms-of-service/