IP to Hostname — Reverse DNS Lookup, Find Domain from IP

How to IP to Hostname Online

1. 1

   Enter a valid IPv4 or IPv6 address into the input field.

2. 2

   Press Enter or click "Lookup" to perform a reverse DNS (PTR) query.

3. 3

   View the primary hostname and any other hostnames associated with the IP address.

4. 4

   Copy the result to your clipboard using the Copy button.

IP to Hostname Features

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  Reverse DNS lookup for both IPv4 and IPv6 addresses

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  Retrieves multiple PTR records if the IP maps to multiple hostnames

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  Provides the exact DNS query execution time

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  100% free with no sign-up required

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  Server-side queries bypass local DNS caches for accurate results

Frequently Asked Questions

What is a reverse DNS lookup?

A reverse DNS lookup (rDNS) is a DNS query that determines the domain name or hostname associated with an IP address, which is the opposite of a forward DNS lookup that determines the IP address associated with a domain name.

What is a PTR record?

A Pointer (PTR) record is a type of DNS record that resolves an IP address to a domain or hostname. PTR records are used for reverse DNS lookups and are commonly required for mail servers to verify that the sending server is authorized.

Why does my IP address not have a hostname?

Not all IP addresses have a PTR record configured. In such cases, the reverse DNS lookup will return no results. Setting up a PTR record usually requires contacting the ISP or hosting provider that controls the IP address block.

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