IPv6 Nameserver Availability

What This Check Does

The IPv6 Nameserver Availability check verifies that at least one of your domain's active nameservers has a valid IPv6 (AAAA record) address. As IPv6 adoption accelerates globally, ensuring your DNS infrastructure supports IPv6 is essential for reaching all users and future-proofing your domain.

DNS Spy queries each of your configured nameservers and confirms that at least one resolves to an IPv6 address. If none of your nameservers have an IPv6 address, this check will fail.

Why It Matters

IPv6 adoption is steadily increasing, with many mobile networks and ISPs now operating IPv6-only or IPv6-preferred environments. Government agencies, large enterprises, and cloud providers increasingly require IPv6 support. Without IPv6-reachable nameservers, your domain may become unreachable for a growing segment of the internet.

Major DNS providers and registrars now offer IPv6 by default. Lack of IPv6 support can also signal an outdated or poorly maintained DNS infrastructure, potentially affecting trust and compliance with modern standards.

Good vs. Bad Configuration

Bad Configuration

Your domain has nameservers with only A (IPv4) records and no AAAA (IPv6) records. Users on IPv6-only networks cannot resolve your domain's DNS, and you are not prepared for the IPv6 transition.

Good Configuration

Your nameservers have both A and AAAA records. Example: ns1.example.com resolves to 198.51.100.1 (IPv4) and 2001:db8::1 (IPv6), ensuring dual-stack accessibility for all resolvers.

How DNS Spy Monitors This

DNS Spy resolves the AAAA records for each of your active nameservers during every monitoring cycle. If no nameserver has a valid IPv6 address, DNS Spy flags the issue and sends an alert. This continuous monitoring ensures you are immediately notified if IPv6 availability is lost due to configuration changes or provider issues.