DNS Lookup: Check All DNS Records Online
Reads all DNS record types of a domain: A, AAAA, MX, NS, TXT, CNAME, SOA and CAA. Useful for migrations, debugging e-mail issues or checking IPv6 records.
What does the DNS lookup check?
The DNS lookup queries every important record type for your domain: A (IPv4 address), AAAA (IPv6), MX (mail servers), NS (authoritative name servers), TXT (including SPF and verification entries), CNAME (an alias to another domain), SOA (the zone's administrative data) and CAA (which Certificate Authority is allowed to issue certificates for you). It's the complete technical business card of your domain in one place.
Why it matters
DNS is the foundation — if something here is wrong, the site is unreachable or mail doesn't arrive. A missing AAAA record means users on IPv6-only networks can't reach you. A missing CAA record lets any CA issue a certificate for your domain — CAA lets you restrict that deliberately. Incorrect MX entries are one of the most common causes of vanished email.
How to read the result
The A and AAAA records show where your site is hosted; the MX records, with their priority, show who accepts your mail (a lower number means higher priority). The NS entries reveal which provider hosts your zone — handy during migrations. The SOA holds the serial number and refresh intervals. A CAA record is optional but an easy security win.
Frequently asked questions about DNS lookup
What's the difference between an A and an AAAA record?
An A record points to an IPv4 address, an AAAA record to an IPv6 address. Modern setups ideally have both.
Why would I want a CAA record?
It defines which Certificate Authorities may issue certificates for your domain — a safeguard against unauthorised issuance.
What does the MX record tell me?
It names the servers that accept email for your domain, along with a priority for failover.
Why don't I see any AAAA records?
Then your domain is reachable over IPv4 only — usually because the hosting or CDN doesn't provide IPv6.
Need the full audit? The full Webscan Radar security check combines DNS lookup with all other areas plus GDPR audit, CMS detection, CVE matching and performance measurement in one report — also free.