A DNS checker looks up publicly available Domain Name System records associated with a domain. These records can show where a website is hosted, which servers handle its email, which nameservers manage its DNS, and other configuration information.

The Royawrites DNS Checker can inspect A, AAAA, CNAME, MX, NS, TXT, CAA, and SOA records when those records are publicly available for the domain being checked.

Not every domain needs every type of DNS record. For example, a domain may work without an AAAA record if it does not use IPv6, while a domain that does not receive email may not require MX records.

You can use the checker to inspect publicly available DNS records for valid public domain names. Private, reserved, or inaccessible network addresses are not checked.

An AAAA record maps a domain name to an IPv6 address. It serves the same purpose as an A record but is used for networks that support the newer IPv6 addressing standard.

A CNAME (Canonical Name) record creates an alias that points one hostname to another hostname instead of directly to an IP address. This is commonly used for subdomains such as www.

An MX (Mail Exchange) record specifies which mail servers are responsible for receiving email on behalf of a domain. Without valid MX records, email delivery may not function correctly.

An NS (Nameserver) record identifies the authoritative nameservers responsible for managing a domain’s DNS records. These nameservers answer DNS queries for the domain.

A TXT record stores text-based information within DNS. TXT records are commonly used for domain verification, email authentication, security policies, and other configuration purposes.

A CAA (Certification Authority Authorisation) record specifies which certificate authorities are permitted to issue SSL/TLS certificates for a domain. It helps improve certificate security by restricting certificate issuance.

An SOA (Start of Authority) record contains administrative information about a DNS zone, including the primary nameserver, serial number, and timing values used for DNS zone management.

DNS changes are not always visible immediately because DNS servers around the world cache records for a period known as the Time to Live (TTL). Until those cached records expire, different users or locations may temporarily receive different DNS responses.

Yes. Reviewing your DNS records can help identify configuration issues that may affect website accessibility, email routing, domain verification, or SSL certificate validation.

However, DNS records are only one part of a website’s overall configuration, so additional troubleshooting may sometimes be required.