# 8x8, free: Phone validation API

> In global business, precision wins. 8×8 Number Lookup API gives you the edge: Verify contacts, enrich customer data, and build targeted connections.

8x8's phone validation API on its Format lookup plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Number, Formats, Validity, Type, Place.
8x8 limits how many calls you get but gives no number.
We haven't run 8x8 through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan is free. 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/8x8/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://cpaas.8x8.com/en/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://lookup.8x8.com/api/v1/subaccounts/{subAccountId}/phones/{phoneNumber}`
- API key: with the plan, on https://cpaas.8x8.com/en/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://developer.8x8.com/connect/reference/phone-number-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: 8x8 (https://cpaas.8x8.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-04

## In the answer

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

## Price

- $ per 1,000 phones: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: In global business, precision wins. 8×8 Number Lookup API gives you the edge: Verify contacts, enrich customer data, and build targeted connections.

## Data

- What it checks: numbering plan
- Keep data: no limit
- Use data: You will have a limited, non-exclusive, non-transferable, non-sublicenseable right to use the applicable Services in accordance with these Terms of Use. You will not (and will not allow Service users) to: a. Reverse engineer, decompile, copy or disassemble the Services, b. Market, sell, sublicense, rent, lease, or otherwise distribute the Services, in whole or in part, c. Modify, upgrade, improve, enhance or create derivative works of any portion of the Services for any purpose, d. Or remove, obscure, or alter any identification, proprietary, copyright or other notices in the Services. [...] In addition, you may not and may not allow any third-party, including your End Users, to: i. Encourage any illegal, abusive, or other activities that interfere with our business or activities, ii. Attempt to circumvent or break any security mechanism on any of the Services or use the Services in any manner that poses a security or other risk to us, any user of our Services, or any of our or their respective customers, iii. Benchmark, tamper with, unauthorized test, reverse-engineer, decompile, or otherwise use the Services in order to find limitations or vulnerabilities or evade filtering capabilities, or any other purpose not authorized by us, iv. Use the Services in any manner that may subject us or any third party to liability, damages, loss or danger, v. Launch or facilitate, whether intentionally or unintentionally, a denial of service attack on any of the Services or any other conduct that adversely impacts the availability, reliability, or stability of the Services, vi. Transmit any material that contains viruses, trojan horses, worms or any other malicious, harmful, or deleterious programs, vii. Use the Services in any manner that violates industry standards, any third party policies or requirements that we may communicate to our customers including any usage requirements, viii. Use the Services in connection with any unsolicited or harassing messages (commercial or otherwise) including unsolicited or unwanted phone calls, SMS or text messages, voice mail, or faxes, ix. Use the Services to harvest or otherwise collect information about others, including email addresses or phone numbers, x. Use the Services to engage in or in connection with fraudulent activity, xi. Use the Services to transmit any material that infringes the intellectual property rights or other rights of third parties, xii. Use the Services to transmit any material that is libelous, defamatory, discriminatory, or otherwise malicious or harmful to any person or entity, xiii. Create a false identity or forged email address or header, or phone number, or otherwise attempting to mislead others as to the identity of the sender or the origin of a message or phone call, xiv. Use the Services, or any component of the Services, in any manner not authorized by us, 

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: subAccountId, phoneNumber. Optional: country, type
- Method: GET
- Path: /api/v1/subaccounts/{subAccountId}/phones/{phoneNumber}

## About the plan

- Plan: Format lookup
- Who can get it: anyone who signs up for an 8x8 Connect account at connect.8x8.com

## The 8 fields the plan's answer can hold

request ID, phone number, national format, phone type, country, lookup state, status detail, status timestamp

## 8x8's plans (2)

- [8x8, free](https://datacircle.dev/validate-phone-apis/8x8/free/llms.txt): $0.00 per 1,000, 56% complete
- [8x8, contact us](https://datacircle.dev/validate-phone-apis/8x8/contact-us/llms.txt): 67% complete, live

## 8x8's calls (1)

- `GET /api/v1/subaccounts/{subAccountId}/phones/{phoneNumber}`: [8x8, free](https://datacircle.dev/validate-phone-apis/8x8/free/llms.txt)

## 8x8's APIs (1)

- [8x8: phone validation API pricing, 2 plans](https://datacircle.dev/validate-phone-apis/8x8/free/llms.txt)

## 8x8: phone validation API alternatives

- [Foxentry, free trial, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/free-trial-post-phone-validate-validate-phone-number-basic/llms.txt): $0.00 per 1,000, 56% complete, stored
- [HLR Lookups, free, 100 free lookups, POST /nt-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/free-100-free-lookups-post-nt-lookups/llms.txt): $0.00 per 1,000, 67% complete, stored
- [Abstract API, free](https://datacircle.dev/validate-phone-apis/abstract-api/free/llms.txt): $0.00 per 1,000, 89% complete, 1 day
- [seven.io, free test credit, GET /api/lookup/hlr](https://datacircle.dev/validate-phone-apis/seven-io/free-test-credit-get-api-lookup-hlr/llms.txt): $0.00 per 1,000, 78% 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 2026-11-04.

- https://cpaas.8x8.com/en/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://cpaas.8x8.com/en/terms-and-conditions/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://cpaas.8x8.com/ph/products/number-lookup-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developer.8x8.com/connect/docs/getting-started-with-number-lookup-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://developer.8x8.com/connect/reference/number-lookup-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://support.cpaas.8x8.com/hc/en-us/articles/59375095114393-Get-phone-number-lookup-data?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing