# Bandwidth, contact us, Dynamic Number Intelligence, POST /accounts/{accountId}/phoneNumberLookup/bulk: Phone validation API

> Send smarter and save: validate numbers, reduce rejections, predict costs.

Bandwidth's phone validation API on its Dynamic Number Intelligence plan. It returns 4 of the 9 key fields we check: Number, Validity, Type, Place.
We haven't run Bandwidth through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
Bandwidth gives this plan's price on request. We rank 888 plans for phone validation APIs by price. Half the plans cost $3.376 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/bandwidth/contact-us-dynamic-number-intelligence-post-accounts-accountid-phonenumberlookup-bulk
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://www.bandwidth.com/products/phone-number-lookup-apis/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://api.bandwidth.com/v2/accounts/{accountId}/phoneNumberLookup/bulk`
- API key: with the plan, on https://www.bandwidth.com/products/phone-number-lookup-apis/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://dev.bandwidth.com/apis/numbers-apis/phone-number-lookup/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#tag/Phone-Number-Lookup/operation/createAsyncBulkLookup
- Sold by: Bandwidth (https://www.bandwidth.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 44%
- Number: ✓
- Validity: ✓
- Type: ✓
- Place: ✓

## Price

- Per: result
- Billing: contact

## Aggregators

- Aggregators: none

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Send smarter and save: validate numbers, reduce rejections, predict costs.

## Data

- Countries: United States, Canada
- What it checks: carrier
- Keep data: no limit
- Use data: The NPA-NXX associated with an LRN and/or any derived or associated carrier information may only be used by non-NPAC users for the purposes of Rating, Routing, Billing and Network Maintenance as defined in NPAC US Permitted Use Clarifications. Any other uses are expressly restricted. [...] You will not (a) use any Service for any purpose other than your own internal business purposes or as permitted in the Product Terms, (b) make any Service available to, or use any Service for the benefit of, anyone other than you and your End Users, unless otherwise expressly stated in an Order Form, (c) sell, resell, or distribute any Service, or offer the Services, on a standalone basis, 

## Plan

- Enough for: no limit

## Rate limit

- Batch: 15,000

## Speed

- Answer: by polling

## The call

- You send: accountId, phoneNumbers
- Method: POST
- Path: /accounts/{accountId}/phoneNumberLookup/bulk

## About the plan

- Plan: Dynamic Number Intelligence
- Who can get it: businesses with a Bandwidth contract (its lookup pages say it is for contracted business use, not individual or consumer use)

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

request ID, status, phone number, country code, line type, voice provider, messaging provider, deactivation reporter, deactivation date, deactivation event, latest message delivery status, initial message delivery status date, latest message delivery status date

## Bandwidth's plans (2)

- [Bandwidth, contact us, Dynamic Number Intelligence, POST /accounts/{accountId}/phoneNumberLookup/bulk](https://datacircle.dev/validate-phone-apis/bandwidth/contact-us-dynamic-number-intelligence-post-accounts-accountid-phonenumberlookup-bulk/llms.txt): 44% complete
- [Bandwidth, contact us, Phone Number Lookup, POST /accounts/{accountId}/phoneNumberLookup/bulk](https://datacircle.dev/validate-phone-apis/bandwidth/contact-us-phone-number-lookup-post-accounts-accountid-phonenumberlookup-bulk/llms.txt): 44% complete

## Bandwidth's calls (2)

- `POST /accounts/{accountId}/phoneNumberLookup/bulk`: [Bandwidth, contact us, Dynamic Number Intelligence, POST /accounts/{accountId}/phoneNumberLookup/bulk](https://datacircle.dev/validate-phone-apis/bandwidth/contact-us-dynamic-number-intelligence-post-accounts-accountid-phonenumberlookup-bulk/llms.txt)
- `POST /accounts/{accountId}/phoneNumberLookup`: [Bandwidth, contact us, Dynamic Number Intelligence, POST /accounts/{accountId}/phoneNumberLookup](https://datacircle.dev/validate-phone-apis/bandwidth/contact-us-dynamic-number-intelligence-post-accounts-accountid-phonenumberlookup/llms.txt)

## Bandwidth's APIs (1)

- [Bandwidth: phone validation API pricing, 2 plans, POST /accounts/{accountId}/phoneNumberLookup/bulk](https://datacircle.dev/validate-phone-apis/bandwidth/contact-us-dynamic-number-intelligence-post-accounts-accountid-phonenumberlookup-bulk/llms.txt)

## Bandwidth: phone validation API alternatives

- [HLR Lookups, contact us, Postpaid account, POST /mnp-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/contact-us-postpaid-account-post-mnp-lookups/llms.txt): 44% complete, live
- [CallerAPI, contact us, Enterprise transparency $40,000+, GET /api/network-lookup/{phone}](https://datacircle.dev/validate-phone-apis/callerapi/contact-us-enterprise-transparency-40000-get-api-network-lookup-phone/llms.txt): 44% complete, live
- [Addressfinder, contact us](https://datacircle.dev/validate-phone-apis/addressfinder/contact-us/llms.txt): 44% complete, live
- [Trestle, contact us, Enterprise, GET /2.0/real_contact, Real Contact API, full](https://datacircle.dev/validate-phone-apis/trestle/contact-us-enterprise-get-2-0-real-contact-real-contact-api-full/llms.txt): 44% complete, stored
- [SMSGatewayHub, contact us](https://datacircle.dev/validate-phone-apis/smsgatewayhub/contact-us/llms.txt): 44% 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 2026-11-04.

- https://dev.bandwidth.com/apis/numbers-apis/phone-number-lookup/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.bandwidth.com/legal/communications-services-agreement/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.bandwidth.com/pricing/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.bandwidth.com/products/phone-number-lookup-apis/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://www.bandwidth.com/release-notes/bandwidth-now-offers-a-phone-number-lookup-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing