13 free tools · no signup to try

Free Online Lookup & Verification Tools

Instantly check phone numbers, emails, IP addresses and domains with free, rate-limited tools powered by the 1Lookup data verification API. Try any tool below — create a free account when you need full reports or bulk processing.

Phone Tools

Phone Number Lookup

Validate any number and see line type, carrier and country.

Reverse Phone Lookup

Find the likely owner and location behind a phone number.

Carrier Lookup

Identify the carrier and network for any phone number.

Line Type Lookup

Check if a number is mobile, landline or VoIP.

Spam Number Checker

See if a number is linked to spam, scams or robocalls.

HLR Lookup

Live HLR query — is a mobile number active and reachable?

Number Portability Lookup

Check whether a mobile number has been ported.

Email Tools

Email Verifier

Check if an email is valid, deliverable and safe to send.

IP Address Tools

IP Address Lookup

Geolocate any IP — city, ISP, ASN and connection type.

What Is My IP

Instantly see your public IP, location and ISP.

VPN & Proxy Detection

Detect VPN, proxy, Tor and datacenter IPs.

IP Blacklist Check

Check an IP's reputation and blocklist status.

Domain & SEO Tools

Domain Authority Checker

Check DA, DR, backlinks and estimated traffic.

One API behind every tool

Every tool here runs on the 1Lookup API — the same real-time phone, email and IP intelligence used in production by businesses worldwide. Get complete results, batch uploads, and a generous free tier when you sign up.