# Telnyx, top-up from $10: Phone validation API

> Telnyx Number Lookup finds the carrier and caller information behind each phone number. Use it to increase outbound calling productivity, improve message deliverability, and protect against spam and fraud.

Telnyx's phone validation API on its Pay as you go plan. It costs $1.50 per 1,000 phones. It returns 7 of the 9 key fields we check. 6 are in the plan's price: Formats, Validity, Type, Carrier, Porting and roaming, Place. 1 costs extra: Owner.
The median plan costs $5.00 per 1,000. This plan costs less than 73% of the 195 priced plans.
The cheapest plan is [Twilio, top-up](https://datacircle.dev/validate-phone-apis/twilio/top-up/llms.txt), at $0.00 per 1,000.

- This page: https://datacircle.dev/validate-phone-apis/telnyx/top-up-from-10
- Get it: https://telnyx.com/pricing/number-lookup
- Its API docs: https://developers.telnyx.com/api-reference/number-lookup/lookup-phone-number-data
- Sold by: Telnyx (https://telnyx.com)
- Checked: 2026-10-23

## In the answer

- Completeness: 78%
- Formats: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Porting and roaming: ✓
- Place: ✓
- Owner: ✓ costs more

## Price

- $ per 1,000: $1.50
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Per: call
- Extra fields: carrier, mobile country code, mobile network code, normalized carrier: +$2.50 · caller name, error code: +$3.00 · enhanced caller name, enhanced caller name error code: +$20.00 · caller identity name, caller identity street line 1, caller identity street line 2, caller identity city, caller identity state code, caller identity postal code, caller identity ZIP+4, caller identity country code, caller identity confidence score, caller identity error code: +$44.00
- Also pays for: from the same budget: every other Service charged against the funds on deposit

## In their words

- Their pitch: Telnyx Number Lookup finds the carrier and caller information behind each phone number. Use it to increase outbound calling productivity, improve message deliverability, and protect against spam and fraud.

## Data

- Freshness: live
- Keep data: no limit
- Use data: Customer hereby represents and warrants that (a) Customer shall access and/or use such Services solely for purposes of (i) routing, rating or billing telephone calls, or (ii) performing network maintenance in connection with the provision of telecommunications-related services, and (b) Customer has signed an NPAC (Number Portability Administration Center) user agreement for acceptable use of data in all regions [...] Customer does not have any right, title, or interest to any data contained within any database associated with the Services

## Plan

- Pay: $10
- You get: $10
- Enough for: about 6,666 calls

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone_number. Optional: type
- Method: GET
- Path: /number_lookup/{phone_number}

## About the plan

- Plan: Pay as you go
- Who can get it: organization owners of paid accounts (fraud review, card payment, verified mobile number, two-factor authentication, service address)

## The 17 fields the plan's answer can hold

country code, national format, E.164 format, valid number, LRN, ported, ported date, OCN, line type, SPID, SPID carrier name, SPID carrier type, alternate SPID, alternate SPID carrier name, alternate SPID carrier type, city, region

## Telnyx's plans (3)

- [Telnyx, top-up from $10](https://datacircle.dev/validate-phone-apis/telnyx/top-up-from-10/llms.txt): $1.50 per 1,000, 78% complete, live
- [Telnyx, $5,000 monthly](https://datacircle.dev/validate-phone-apis/telnyx/5000-monthly/llms.txt): 67% complete, live
- [Telnyx, contact us](https://datacircle.dev/validate-phone-apis/telnyx/contact-us/llms.txt): 67% complete, live

## Telnyx's calls (1)

- `GET /number_lookup/{phone_number}`: [Telnyx, top-up from $10](https://datacircle.dev/validate-phone-apis/telnyx/top-up-from-10/llms.txt)

## Telnyx's APIs (1)

- [Telnyx: phone validation API pricing, 3 plans](https://datacircle.dev/validate-phone-apis/telnyx/top-up-from-10/llms.txt)

## Telnyx: phone validation API alternatives

- [APIFreaks, $20 pack, One-Off 80,000 credits, POST /phone/validation](https://datacircle.dev/validate-phone-apis/apifreaks/20-pack-one-off-80000-credits-post-phone-validation/llms.txt): $0.50 per 1,000, 67% complete, live
- [CheckThatPhone, $100 monthly](https://datacircle.dev/validate-phone-apis/checkthatphone/100-monthly/llms.txt): $1.00 per 1,000, 78% complete, live (deactivation date, state DNC: 7 days)
- [Phone-Check.app, $5.59 pack, 5,000 Credits, GET /v1-get-phone-details](https://datacircle.dev/validate-phone-apis/phone-check-app/5-59-pack-5000-credits-get-v1-get-phone-details/llms.txt): $1.118 per 1,000, 78% complete, live
- [Xverify, $1,500 pack](https://datacircle.dev/validate-phone-apis/xverify/1500-pack/llms.txt): $1.50 per 1,000, 44% 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 2026-10-23.

- https://developers.telnyx.com/api-reference/number-lookup/lookup-phone-number-data
- https://developers.telnyx.com/docs/account-setup/account-upgrade
- https://developers.telnyx.com/docs/account-setup/levels-and-capabilities/paid
- https://developers.telnyx.com/docs/account-setup/levels-and-capabilities/trial
- https://developers.telnyx.com/docs/development/api-fundamentals/reliability/rate-limiting
- https://developers.telnyx.com/docs/identity/number-lookup
- https://developers.telnyx.com/docs/identity/number-lookup/quickstart
- https://support.telnyx.com/en/articles/4280500-billing-setup-billing-groups
- https://support.telnyx.com/en/articles/4366901-your-number-lookup-guide
- https://telnyx.com/pricing/number-lookup
- https://telnyx.com/products/number-lookup
- https://telnyx.com/terms-and-conditions-of-service