DNS Lookup online

How to Use DNS Lookup

1. Enter a domain name — e.g. example.com or mail.google.com — into the Domain field. No https:// prefix needed.
2. Select the DNS record type you want to query: A, AAAA, MX, TXT, NS, CNAME, SOA, or PTR.
3. Click Lookup or press Enter. Results arrive within seconds via Google's encrypted DNS-over-HTTPS service.
4. Read the table: each row shows the record name, record type, TTL (cache lifetime in seconds), and the resolved data value.

DNS Lookup works like dig or nslookup in your browser — no terminal required. This free online DNS checker is useful for verifying DNS propagation after changing nameservers, confirming mail server (MX) configuration, debugging SPF and DMARC TXT records, checking that a CNAME alias is pointing at the right host, or looking up the IPv4 (A) and IPv6 (AAAA) addresses for any hostname.

How DNS Lookup Works

DNS Lookup queries Google's public DNS-over-HTTPS (DoH) resolver at dns.google/resolve. Unlike a plain-text DNS request sent by your operating system, DoH wraps the query in HTTPS — so it is encrypted in transit and cannot be intercepted by your ISP or network provider. Results come directly from Google's authoritative resolver and are not cached by your browser or this tool, so you always see up-to-date records.

• Checks A, AAAA, MX, TXT, NS, CNAME, SOA, and PTR record types in one click
• Reports TTL so you know how long each record is cached by downstream resolvers
• Returns NXDOMAIN and SERVFAIL status codes with plain-English explanations
• Works on Chrome, Firefox, Safari, and Edge — no browser extensions or plugins needed
• Completely free — no account, no sign-up, no rate limits imposed by this tool

Understanding DNS Record Types

• A — Maps a hostname to an IPv4 address (e.g. 93.184.216.34). The most common record type.
• AAAA — Maps a hostname to an IPv6 address. Used when a server supports the IPv6 protocol.
• MX — Mail exchanger records. Specifies which mail servers handle incoming email for the domain, with a priority value — lower numbers = higher priority.
• TXT — Free-form text records. Widely used for SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), DMARC email authentication, and domain ownership verification with Google, Cloudflare, and others.
• NS — Lists the authoritative nameservers for the domain — the servers that hold the definitive DNS records.
• CNAME — Canonical name — an alias that redirects queries for one hostname to another (e.g. www → example.com).
• SOA — Start of Authority — contains the primary nameserver, administrator contact email, serial number, refresh interval, retry interval, expire time, and minimum TTL.
• PTR — Reverse DNS lookup — maps an IP address back to a hostname. Used for email deliverability checks and network diagnostics.

After using DNS Lookup, explore the full suite of Network tools — including Subnet Calculator, CIDR Calculator, IP Info, and 310+ other free utilities — at Chunky Munster.