# SmartPhoneValidator > SmartPhoneValidator checks whether a phone number is valid and returns its line type (mobile, landline, VoIP, toll-free, premium), carrier, location, timezone, E.164 format and a 0-100 risk score. Use it in the browser, with a bulk CSV upload, or through a REST API. Coverage is 248+ countries, with US and Canadian numbers a core focus. Pricing is pay-as-you-go at $0.004 per lookup from a prepaid wallet, and every new account gets 100 free lookups with no credit card. The REST API base URL is https://api.smartphonevalidator.com/v1. Requests authenticate with an API key in the `X-API-Key` header (or `Authorization: Bearer`). Call the API from a server, never from browser or mobile app code. The full reference is in the file linked below; prefer it over scraping the HTML pages. The product screenshots are described in words in its "Images" section. ## API and docs - [Full reference for AI agents and developers](https://smartphonevalidator.com/llms-full.txt): authentication, endpoints, request and response fields, risk score, pricing and errors in one plain-text file - [Site map](https://smartphonevalidator.com/site-map/): every section in one page, with the real product screenshots - [API documentation](https://smartphonevalidator.com/docs/): single, batch (up to 100 numbers) and bulk CSV validation, billing and error codes with cURL examples ## Product - [Home](https://smartphonevalidator.com/): live phone number checker and product overview - [Features](https://smartphonevalidator.com/features/): what a lookup returns and how to read it - [Risk score](https://smartphonevalidator.com/risk-score/): what the 0-100 score means, what raises it and what to do with it - [Use cases](https://smartphonevalidator.com/use-cases/): lead capture, sign-up checks, SMS and voice campaigns, CRM clean-up and risk review - [Pricing](https://smartphonevalidator.com/pricing/): $0.004 per lookup, prepaid wallet, optional automatic refill, 100 free lookups ## Free tools - [All tools](https://smartphonevalidator.com/tools/): free phone number tools - [Phone Validator](https://smartphonevalidator.com/tools/phone-validator/): validate a phone number in real time - [Line Type Checker](https://smartphonevalidator.com/tools/line-type-checker/): check whether a number is mobile, landline, VoIP or toll-free - [Carrier Lookup](https://smartphonevalidator.com/tools/carrier-lookup/): find the carrier and network of a number - [Number Format Checker](https://smartphonevalidator.com/tools/number-format-checker/): check number format and E.164 correctness - [Location Finder](https://smartphonevalidator.com/tools/location-finder/): country, region, city and timezone for a number - [Bulk Validator](https://smartphonevalidator.com/tools/bulk-validator/): validate a CSV of numbers and download the results ## Coverage - [Coverage by country](https://smartphonevalidator.com/coverage/): 248+ countries and territories supported, 222 with their own page, for example [United States](https://smartphonevalidator.com/coverage/united-states/) ## Company and legal - [About](https://smartphonevalidator.com/about/): what SmartPhoneValidator is, in plain words, and who runs it - [Contact](https://smartphonevalidator.com/contact/): sales and partnerships (info@smartphonevalidator.com), technical support (support@smartphonevalidator.com), book a demo - [Terms](https://smartphonevalidator.com/terms/) - [Privacy policy](https://smartphonevalidator.com/privacy/) - [Refund policy](https://smartphonevalidator.com/refund-policy/) ## Optional - [Sitemap (plain text)](https://smartphonevalidator.com/sitemap.txt): every public page, one address per line, readable by any tool - [Sitemap (XML)](https://smartphonevalidator.com/sitemap.xml): every public page, for search engines - [Image sitemap](https://smartphonevalidator.com/sitemap-images.xml): the product screenshots with titles and captions