Domain Name & DNS

Reverse DNS (PTR) Lookup Free

Instantly query the PTR (reverse DNS) record of an IP address. Supports IPv4 and IPv6, and lists multiple PTR records.

Check Reverse DNS (PTR)
Information

About Free Reverse DNS (PTR) Lookup

Reverse DNS is a type of DNS query that resolves the direction from an IP address to a domain name. While regular DNS converts a domain name to an IP address, reverse DNS does the opposite: it shows which domain name or server name corresponds to a specific IP address. These records... PTR (Pointer) record It is said and in-addr.arpa (IPv4) or ip6.barley (IPv6) is stored under private domain names.

Reverse DNS queries are critical in many technical areas, such as email server verification, network security analysis, spam filtering, and CDN/hosting detection. In particular, correctly configured PTR records are essential for email delivery to avoid spam blocks. System administrators and network engineers frequently use this tool to check the PTR records of server IPs, investigate ownership of unknown IP addresses, and verify DNS configurations.

The tool, the query DNS_PTR It does this using the method and lists all PTR records if there is more than one. You will be informed with an error message if an invalid or poorly formatted IP address is entered. IPv4 (e.g. 8.8.8.8) and IPv6 (e.g. 2001:4860:4860::8888Both of these addresses are supported.

How to use it?

Step by step

  1. The inquiry you want to make IPv4 or IPv6 Type the address into the input box (e.g. 8.8.8.8).
  2. PTR Inquiry Click the button or press Enter.
  3. The query result will be available within a few seconds: if a PTR record is available. domain name list visible.
  4. If a PTR record is missing, this is clearly indicated; it means that reverse DNS has not been configured for that IP address.
  5. Results copy You can add it to your clipboard using the button.
FAQ

Frequently Asked Questions

A PTR (Pointer) record is a DNS record that maps an IP address to a domain name. It is especially crucial for email servers; if your mail server doesn't have a PTR record matching its IP address, your emails may be marked as spam or rejected.

Not every IP address may have a PTR record. The PTR record must be configured by the ISP or hosting company that owns the IP address. If the record is not configured, the query will return empty.

Yes, technically it's possible to define multiple PTR records for a single IP address; however, this is a rare and generally not recommended configuration. This tool lists all PTR records.

Yes, the tool supports both IPv4 and IPv6 addresses. For IPv6... ip6.barley A PTR query is performed using the custom field.

The PTR record is set by your internet service provider (ISP) or hosting company that provided your IP address. It can usually be configured via the control panel or by contacting their support team.
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