Free tools
37 tools you can use right now, with no account. The lookups run on the same data as the LookValid API, and the calculators and builders run in your browser.
37 tools
- IP address lookupSee where an IPv4 or IPv6 address is located, which network owns it and whether it is a Tor exit or hosting address.
- Email domain checkerCheck the mail records behind an email address or domain: MX servers, SPF, DMARC, disposable and free providers.
- DMARC checkerRead a domain's DMARC record and see its policy, subdomain policy, percentage and report addresses explained.
- Phone number validatorValidate a phone number against its country's numbering plan and get E.164, national and international formats.
- Who called meCheck whether a number has been reported for unwanted calls in public FTC and FCC complaint data.
- Spam phone checkerGet a spam risk level for a phone number from public FTC and FCC complaint records, with the evidence behind it.
- Domain age checkerFind out when a domain was registered, how old it is, when it expires and which registrar holds it.
- Website contact finderFind the email addresses, phone numbers and social profiles a website publishes on its own pages.
- Link-in-bio extractorPull the profile name, description and every outbound link from a public link-in-bio page.
- Country calling code lookupFind a country by calling code, two-letter code or name, with its number lengths, dialing prefixes and an example number.
- Carrier lookupSee which carrier a US or Canadian number block was first assigned to, with its rate center and state.
- Link safety checkerCheck a web address against a public list of reported malicious domains before you click.
- VIN decoderDecode a 17-character vehicle identification number into make, model, year, engine and build details.
- Domain authority checkerScore a domain from 0 to 100 using open web-graph and popularity rankings, with the ranks behind the score.
- Site files checkerCheck a site's robots.txt, sitemaps, llms.txt and security.txt, test a URL against robots.txt and see which AI crawlers are allowed.
- CPM CalculatorWork out CPM, total cost, impressions or eCPM from the numbers you have. The formula is shown with your values.
- Engagement Rate CalculatorEngagement rate for Instagram, TikTok, YouTube or X from average likes, comments and followers or views.
- YouTube Money CalculatorEstimate YouTube ad revenue per day, month and year from your views and a low and high RPM.
- UTM BuilderAdd source, medium and campaign tags to any link, with channel presets and warnings that keep your reports clean.
- Phone Number Format GuidePick a country and see one sample number written the national way, the international way and as E.164, with digit counts.
- Email Verification Cost CalculatorEnter how many emails you need verified and see each provider's published price, ranked lowest total first.
- Phone Validation Cost CalculatorEnter how many phone numbers you need validated and see each provider's published price, ranked lowest total first.
- SPF Record CheckerRead a domain's SPF record and count its DNS lookups out of 10, follow every include and see what the policy means.
- MX Record LookupList the mail servers of a domain in priority order, see which provider runs them, and spot a null MX or a missing record.
- WHOIS LookupRead a domain's registration record from its registry: registrar, dates, name servers, DNSSEC and lock status.
- DOT Number LookupLook up a USDOT number in the FMCSA census: status, docket numbers, classification, fleet size and safety rating.
- Bluesky Profile ViewerLook up a public Bluesky profile by handle: name, bio, follower and post counts, and account age.
- VPN and Proxy CheckCheck an IP address against the Tor exit list and published cloud and hosting ranges.
- IP Blacklist CheckSee the reputation signals held on an IP address, each with its points, and a reputation band for the total.
- Phone Line Type LookupSee what kind of line sits behind a phone number, with a plain meaning for every type.
- What is my IP addressSee your public IP address, its approximate location and the network that owns it.
- NPI Number LookupLook up a 10-digit NPI number: provider or organization name, status, specialty, practice address and phone, read live from the CMS registry.
- Is This Website Legit CheckerRead a web address for look-alike letters, brand tricks, a new registration and a public warning list.
- ZIP Code LookupEnter a US ZIP or ZIP+4 and see its place names, state and approximate centre, plus what the digits of a ZIP code mean.
- Scam Text Message CheckerPaste a suspicious text and see which scam patterns it matches, with a clear next step.
- Phishing Email CheckerPaste an email, with its headers if you have them, and see which phishing patterns it matches.
- Is This a Scam CheckerPaste any message, offer or direct message and see which scam patterns it matches, with the next step.
Need these lookups inside your product?
The free tools are limited per visitor. The API gives you the same lookups with a key, one shared credit balance and no visitor limit.