PTR Check

Validate reverse DNS for an IPv4 address or hostname and check whether PTR results resolve forward again to the original IP.

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Related Tools

Record Lookup

Query A, AAAA, CNAME, NS, PTR, SOA, SRV, CAA, and TXT records.

Reverse PTR Zone Helper

Generate reverse PTR record format and suggested reverse DNS zone names.

CAA Analysis

Review certificate authority authorization records and tags.

Related Articles

Common PTR Record Problems: Reverse DNS Issues Explained

A practical guide to PTR record problems, including missing reverse DNS, forward-confirmed reverse DNS, hostname issues, and how PTR impacts email deliverability.

How to Check Reverse DNS for Mail (Step-by-Step Guide)

A practical guide to checking reverse DNS for mail servers, including PTR records, forward confirmation (FCrDNS), and what good mail-related reverse DNS looks like.

What is a PTR record?

Learn what PTR records are, how reverse DNS works, and why accurate PTR validation matters for mail delivery, logging, and network trust.