AAAA Record Lookup

Look up AAAA (IPv6) records — classify address type, detect hosting, check reverse DNS, view geo-location, compare with IPv4, and export

Enter a domain to look up its AAAA (IPv6) records

See IPv6 addresses with type classification, geo-location, hosting provider, reverse DNS, health checks, and a side-by-side IPv4 comparison.

What is the AAAA Record Lookup Tool?

The AAAA Record Lookup tool resolves the IPv6 addresses (AAAA records) for any domain and enriches each address with its type classification (Global Unicast, Link-Local, Unique Local, etc.), geographic location, hosting or CDN provider, reverse DNS, ISP, AS number, and health status. It also fetches the domain's IPv4 (A) records for a side-by-side comparison.

AAAA records are the IPv6 equivalent of A records — they map a domain to a 128-bit IPv6 address. As IPv6 adoption grows, checking whether a domain supports IPv6 is increasingly important for accessibility, compliance, and performance. This tool tells you at a glance whether IPv6 is configured and what infrastructure serves it.

AAAA Lookup showing IPv6 records with type, geo, hosting, and IPv4 comparison

How to Use

  1. 1
    Enter a Domain:

    Type any domain and click "Lookup AAAA".

  2. 2
    Check IPv6 Type & Health:

    Each address shows its type (Global Unicast, Link-Local, etc.) with a plain-English explanation, plus health checks for validity, public reachability, rDNS, and geo-location.

  3. 3
    View Geo & Hosting:

    See location, ISP, AS number, reverse DNS, and detected hosting/CDN provider — same enrichment as the A Record Lookup.

  4. 4
    Compare & Export:

    See IPv4 and IPv6 side by side. Copy IPv6 only, copy all data, or export as CSV, JSON, or TXT.

Key Features

IPv6 Type Classification:Classifies each address as Global Unicast, Link-Local, Unique Local, Multicast, 6to4, NAT64, Loopback, or Documentation — with a plain-English explanation of what each means.
Geo-IP Location:City, region, country, and flag for each IPv6 address, plus ISP, organization, and AS number.
Hosting / CDN Detection:Identifies Cloudflare, AWS, Azure, GCP, Vercel, Netlify, and 20+ more from reverse DNS and org data.
IPv4 Comparison:Fetches A records alongside AAAA and shows them side-by-side, with a link to the full A Record Lookup.
Health Checks:Validates each address: valid format, publicly routable, has reverse DNS, and geo-locatable.
Human-Readable TTL:Shows TTL as both raw seconds and a friendly label like "1 hour" or "6h 30m".

Pro Tips

Dual Stack is Best

Having both A and AAAA records (dual stack) ensures your domain is reachable from both IPv4 and IPv6 networks. IPv6-only risks cutting off older clients; IPv4-only misses the growing IPv6 user base.

Check the Type

Only Global Unicast addresses (2000::/3) are publicly routable. If you see Link-Local or Unique Local addresses in your AAAA records, something is wrong — those can't be reached from the internet.

Set Up rDNS

Reverse DNS matters for IPv6 too — especially for mail servers. Without a PTR record, outbound email from an IPv6 address is more likely to be rejected or flagged as spam.

Real-World Applications

IPv6 Readiness

Check whether your domain or a competitor's supports IPv6 — increasingly required for government compliance and mobile-first markets.

CDN Verification

Confirm your CDN serves IPv6 traffic. Some CDN tiers don't enable AAAA records by default — this tool shows you instantly.

Troubleshooting

If IPv6 users can't reach your site, check whether AAAA records exist, point to the right provider, and have valid Global Unicast addresses.

IPv6 Address Types

Global Unicast

2000::/3

Publicly routable — the main type used on the internet

Link-Local

fe80::/10

Local network only — auto-configured on every interface

Unique Local

fc00::/7

Private — like IPv4's 10.x / 192.168.x ranges

Multicast

ff00::/8

One-to-many — sends to a group of interfaces

Loopback

::1

Localhost — equivalent to 127.0.0.1

6to4 Tunnel

2002::/16

Transition — encapsulates IPv6 inside IPv4

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CNAME Lookup

Follow CNAME chains and detect CDN/hosting at each hop.

The AAAA Record Lookup is the most detailed free IPv6 lookup tool available — it classifies address types, maps each IP geographically, detects hosting providers, runs health checks, and shows a side-by-side IPv4 comparison. Whether you're checking IPv6 readiness, verifying CDN configuration, or troubleshooting connectivity, enter a domain and see everything in seconds. No sign-up, no cost.

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