Free secondary DNS

Keep your zone up when your primary goes down

AnyZone pulls your zone via AXFR and serves it as a slave DNS backup. No account, no dashboard. Just a verification link.

7 zones currently served

Set up secondary DNS

We'll send you a verification link. That link is your access, no password needed.

By submitting you confirm you control this domain. We'll email you a single link to complete setup.

How it works

1

Verify your domain

Confirm your email, then add a small TXT record to prove you control the domain. We check for it automatically.

2

Allow zone transfers

Add our nameserver IPs to your primary's allow-transfer list. Optionally add a TSIG key if your provider supports it.

3

We pull your zone

Our three nameservers request the zone independently via AXFR and start serving it within minutes.

4

Stay informed

Your setup link shows live progress. We email you if transfers stop working, and keep serving your last copy until they do.

Built for reliability, not complexity

Everything here is designed to run quietly in the background.

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Three secondary nameservers

ns1, ns2, and ns3 each pull your zone independently as slave DNS servers. No single point of failure.

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Automatic retries

Transfer failures don't take you down. We keep retrying and keep serving your last successful backup DNS copy until transfers recover.

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TSIG or IP allow-list

We try authenticated transfers first, then fall back to plain IP-based transfers automatically. No configuration needed from you.

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No account, no password

Your setup link is your access. Bookmark it to check status any time. We only email you when something needs attention.

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Live status page

Each zone has a unique status page showing exactly where it is in the setup process, updated automatically.

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Domain verification

TXT record verification proves you control the domain before we transfer anything. No one can add your zone without your knowledge.

AnyZone nameservers

Add these to your domain's allow-transfer configuration and as NS records once your zone is active.

ns1.anyzone.org

A79.99.45.218
AAAA2a00:da00:f467:b200::1

ns2.anyzone.org

A67.215.241.54
AAAA2607:9d00:2000:63::eedb:c413

ns3.anyzone.org

A102.205.44.47
AAAA2c0f:2cc0:207::1

Common questions

Do I need to move my DNS to AnyZone?

No. Your primary DNS stays exactly where it is. AnyZone only adds secondary nameservers, read-only mirrors of your existing zone. You keep full control.

What if my provider doesn't support TSIG?

That's fine. We also support IP-based allow-lists, which most providers offer. We try TSIG first and fall back automatically, so you don't need to configure anything differently.

What happens if a transfer fails?

We keep retrying and keep serving your last successful zone copy throughout. If transfers fail for more than a week we'll email you a heads-up, but nothing goes down in the meantime.

My provider won't allow outbound AXFR at all. What now?

Some free hosted DNS services don't support this. See our docs for the standard workaround, or get in touch.

How do I check my zone's status?

Every zone gets a unique status page at setup. The link is emailed to you and stays valid for 30 days. Bookmark it.