Free DNS tool
DNS AAAA Record Lookup
Find the IPv6 address any domain points to, and confirm your site is reachable over IPv6 once you enable it at your host.
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Lookups run in your browser over Google public DNS-over-HTTPS (Cloudflare as fallback). Nothing you enter is sent to Pulsetic.
DNS decides where your domain and email actually go. Pulsetic watches your domain and SSL certificate around the clock.
What is an AAAA record?
An AAAA record maps a domain to an IPv6 address, the modern 128-bit equivalent of the IPv4 address an A record holds. The name has four As because an IPv6 address is four times the size of an IPv4 one.
Most domains keep both an A and an AAAA record so clients can connect over whichever protocol they support. A missing AAAA simply means the name is reachable over IPv4 only, which is still common.
When to check your AAAA record
Check it when you enable IPv6 on a host or CDN, to confirm the AAAA record resolves to the right address. An AAAA that points at an unconfigured or firewalled IPv6 endpoint can make a site slow or unreachable for IPv6 visitors while looking fine over IPv4.
If users on IPv6 networks report problems that you cannot reproduce, a stale or wrong AAAA record is a common and easily missed cause.
Common IPv6 and AAAA pitfalls
A frequent mistake is publishing an AAAA record that points at an IPv6 address the server is not actually listening on, or that a firewall blocks. Clients on IPv6 networks try the AAAA first, stall, then fall back to IPv4, which users experience as a slow site even though everything looks fine over IPv4.
Another is leaving a stale AAAA behind after a migration. Because clients prefer IPv6 when an AAAA exists, an outdated one quietly sends a slice of your traffic to the old server. After any move, run a DNS AAAA record lookup and confirm the address matches your new host before you call the migration done.
Look it up from the terminal
Prefer the command line? These return the same records this tool shows:
dig example.com AAAA +short
nslookup -type=AAAA example.com
Every DNS record type
What each record does. Each one has a dedicated lookup in the tabs above.
| Record | What it does | Example value |
|---|---|---|
| A | Maps a domain to an IPv4 address. | example.com → 93.184.216.34 |
| AAAA | Maps a domain to an IPv6 address. | example.com → 2606:2800:220:1:: |
| CNAME | Points one name at another name, as an alias. | www → example.com |
| MX | Names the mail servers that accept email for the domain, each with a priority. | 10 mail.example.com |
| TXT | Holds free-form text, used for SPF, DKIM, DMARC and domain verification. | v=spf1 include:_spf.google.com ~all |
| NS | Lists the authoritative name servers for the domain. | ns1.example.com |
| SOA | Start of authority: the primary name server and the zone refresh, retry and expiry timers. | ns1.example.com . 2026010101 |
| PTR | Reverse record: maps an IP address back to a host name. | 34.216.184.93.in-addr.arpa |
| SRV | Locates the host and port for a specific service. | _sip._tcp → 5060 sip.example.com |
| CAA | States which certificate authorities may issue SSL certificates for the domain. | 0 issue "letsencrypt.org" |
Frequently asked questions
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What is an AAAA record?
An AAAA record maps a host name to an IPv6 address, doing the same job as an A record does for IPv4. Clients that support IPv6 use it to connect over the newer protocol.
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What is the difference between A and AAAA records?
An A record stores an IPv4 address and an AAAA record stores an IPv6 address. Domains frequently publish both so visitors connect over whichever protocol their network supports.
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Do I need an AAAA record?
Not strictly. If you only have an A record, the site still works over IPv4. An AAAA record adds IPv6 reachability, which is increasingly expected and can improve performance for IPv6-native networks.
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Why does my domain have no AAAA record?
Because IPv6 has not been enabled for it. Many hosts and CDNs require you to turn IPv6 on explicitly; until then the name resolves over IPv4 through its A record only.
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