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DNS Lookup

Query all DNS record types for any domain in real time — A, AAAA, MX, NS, TXT, CNAME, SOA, SRV, CAA and PTR. View TTL values, priorities, and reverse DNS — all from a live authoritative query.

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Try: github.com google.com cloudflare.com amazon.com

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Nameservers

📖 Record Types

IPv4 address — maps domain to IP

AAAA

IPv6 address record

Mail exchange — email routing

Nameserver — authoritative DNS

TXT

Text — SPF, DKIM, verification

CNAME

Alias pointing to another name

SOA

Start of Authority — zone info

CAA

Restricts which CAs can issue SSL

🔗 Related Tools

SSL Certificate Checker

What is a DNS Lookup?

A DNS (Domain Name System) lookup queries the distributed database of nameservers that translates human-readable domain names into the IP addresses and routing information computers need to connect to them. Every time you visit a website, send an email, or make an API call, your device performs DNS lookups behind the scenes — typically in milliseconds.

This tool performs a live, authoritative DNS query directly from our servers, bypassing any local DNS cache. This means you always see the current published DNS records, making it ideal for checking DNS propagation after making changes.

DNS Record Types Explained

Type	Full Name	Purpose	Example Value
`A`	Address	Maps domain to IPv4 address	93.184.216.34
`AAAA`	IPv6 Address	Maps domain to IPv6 address	2606:2800:220:1:248:1893:25c8:1946
`MX`	Mail Exchange	Routes email to mail servers, with priority	10 mail.example.com
`NS`	Nameserver	Identifies authoritative DNS servers for the zone	ns1.example.com
`TXT`	Text	Arbitrary text — SPF, DKIM, domain verification	v=spf1 include:_spf.google.com ~all
`CNAME`	Canonical Name	Alias pointing one name to another	www → example.com
`SOA`	Start of Authority	Zone metadata: primary NS, serial, refresh timers	ns1.example.com. admin.example.com. 2024010101
`SRV`	Service	Service location for protocols like SIP, XMPP	10 20 5060 sip.example.com
`CAA`	Certification Authority Authorization	Restricts which CAs may issue SSL certs	0 issue "letsencrypt.org"
`PTR`	Pointer	Reverse DNS — maps IP address back to hostname	host.example.com

Frequently Asked Questions

DNS changes typically propagate globally within 24–48 hours, though many resolvers pick up changes much faster — sometimes within minutes if the old TTL was low. The TTL (Time To Live) of the old record determines how long resolvers cache it before checking again. Setting a low TTL (e.g. 300 seconds) before making changes speeds up propagation significantly.

TTL (Time To Live) is the number of seconds a DNS resolver should cache a record before fetching a fresh copy. A TTL of 3600 means the record is cached for 1 hour. Lower TTLs mean faster propagation of changes but more DNS queries. Most production records use 300–3600 seconds, while critical records like NS may use 86400 (24 hours).

SPF (Sender Policy Framework) is stored as a TXT record. It lists all the mail servers authorised to send email on behalf of your domain. Email providers check this record to determine whether incoming email is legitimate. Look for a TXT record starting with v=spf1 to find a domain's SPF policy.

Multiple A records implement round-robin load balancing — DNS returns the list of IPs and clients typically use the first one, cycling through them over time. Large services like Google and Cloudflare have dozens of A records per domain to distribute traffic across their global infrastructure.

A CAA (Certification Authority Authorization) record tells SSL certificate authorities which CAs are allowed to issue certificates for your domain. For example, 0 issue "letsencrypt.org" means only Let's Encrypt may issue certs. While optional, adding CAA records is a security best practice — it prevents rouge CAs from issuing fraudulent certificates for your domain.