DevTools Logo

Reverse DNS (PTR) Lookup

Reverse DNS (PTR) Lookup

Resolve IPv4 and IPv6 addresses to their hostnames using client-side DNS-over-HTTPS (DoH).

Query Settings

Enter an IP address and select a DoH resolver

Privacy Notice & Client-side Execution

Queries are fetched directly from your browser to public encrypted DNS-over-HTTPS (DoH) endpoints. Target IP queries are neither stored nor tracked on our servers.

    Related guides

    IP Intelligence — PTR, ASN, and RBL in One Lookup

    Reverse DNS, Team Cymru ASN mapping, and Spamhaus ZEN status for public IPs via the DevTools backend.

    What Is Reverse DNS (PTR) and How Does It Work?

    Understand PTR records, reverse DNS zones, and common uses for IPv4 and IPv6 address lookups.

    Related tools

    API Mock Server

    Define mock REST routes and intercept fetch calls client-side

    Bandwidth Calculator

    Estimate how long a file takes to transfer at a given connection speed — correctly handling bits vs bytes (Mbps vs MB/s) and SI vs binary size units

    Broken Link Checker

    Extract http(s) links from pasted HTML and check them via proxy

    cURL to Code Converter

    Convert cURL commands to code snippets in multiple languages. Parse cURL and generate JavaScript, Python, PHP, and more.

    DNS Lookup Tool

    Query DNS records and resolve domain names to IP addresses

    DNS Propagation Checker

    Compare DNS answers from global public resolvers and see propagation consensus instantly