OPT lookup

Find all EDNS options for a domain name with this online DNS OPT checker. For example, try ebay.com or fandom.com to view their OPT records.

How to lookup OPT records

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OPT records can be configured by the owner of a domain name. They are used to store information in the DNS, which can be looked up by anyone. Each record type has a different purpose.

OPT records are configured in DNS. But how can you look up these OPT records? That depends on the operating system you are using. Windows, Linux and Mac all have a different way of finding OPT records. The sections below contain instructions for each operating system.

Example output of a OPT lookup query

How to lookup OPT records on Windows

The OPT record type cannot be looked up in Windows. Neither nslookup, nor Powershell's Resolve-DnsName has support for it. You can either install WSL and follow the Linux instructions below, or use an online OPT lookup tool like the one on the top of this page.

How to lookup OPT records on Mac OS

To check the OPT records for a certain domain name on a Mac, follow these steps:

  1. Open a terminal by entering [command] + [space] → 'terminal.app' → [enter].Open a terminal on a Mac
  2. Type dig example.com opt and hit [enter] to get the OPT records for example.com.OPT lookup on a Mac
  3. The OPT records are listed below the ANSWER SECTION heading.

How to lookup OPT records on Linux

To check the OPT records for a certain domain name on Linux, follow these steps:

  1. Open a terminal by entering [Super] → 'terminal' → [enter].Open a terminal in Linux
  2. Type dig example.com opt and hit [enter] to get the OPT records for example.com.OPT lookup in Linux
  3. The OPT records are listed below the ANSWER SECTION heading.

How to find OPT records

To check the OPT records of a domain, follow these steps:

  1. Open the OPT lookup tool.Open the OPT lookup tool
  2. Enter the domain name and hit [enter].Example DNS OPT records
  3. The tool will query the OPT records and shown them at the top of the page.

How to lookup other record types

There are other types of DNS records then just OPT. The most commonly used DNS record types are A, AAAA, CNAME, NS, TXT, MX and SOA. If you'd like to look up all records of these record types, you can do so with nslookup. Click any of the record types below to find DNS records for that specific record type.