This page's audience our own tag's counts — open to see them

Period

–Visits

–Page views

–Clicks to vendors

–Time on page

–Reading now

Clicks to vendors, by tool

Top countries

Devices

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

ddup

Free#21 of 24 in DNS Failover Services

ddup: A focused open-source option for automatic DNS failover across three providers. Ranked #21 of 24 in DNS Failover Services by our editors (7.2/10); pricing: Open source; best for self-hosted DNS failover across major providers.

7.2/10Editor score

Visit ddup

ddup7.2 Visit ddup

At a glance

Editor score
7.2 / 10
Pricing
Open source
Best for
Self-hosted DNS failover across major providers
Paid from
Free
Facts checked
21 Sep 2026

Where it wins
- Automatic DNS updates based on periodic HTTP health checks
- Round-robin DNS supports load balancing and failover
- Runs with Docker, Podman, or as a standalone binary
Where it doesn't
- Provider integrations are limited to Azure DNS, Cloudflare DNS, and OVH
- Failover is based on DNS records rather than broader methods
- Requires self-hosted deployment and operational management

Our verdict on ddup

ddup is open-source, self-hosted software for checking the health of internal or external application endpoints and updating DNS records automatically. It is aimed at teams that want to manage DNS failover themselves across Linux environments, rather than adopting a managed DNS failover service. The project supports round-robin DNS, allowing healthy deployments to remain in rotation while unhealthy replicas are excluded. It handles both IPv4 A and IPv6 AAAA records.

Deployment is flexible for infrastructure teams: ddup can run as a Docker or Podman container, or as a standalone binary managed by a system service. An optional local web server provides configuration access. Operators can configure the check interval, timeout, number of attempts, and DNS TTL, giving them control over how health checks and record changes behave. Its monitoring model is focused on periodic HTTP checks for configured endpoints, so it fits services whose availability can be evaluated through those checks.

The provider fit is clear but focused. ddup supports Azure DNS, Cloudflare DNS, and OVH, with automatic updates applied to DNS records based on endpoint health. Choose it if you need open-source, self-hosted DNS failover with configurable thresholds, round-robin behavior, and deployment flexibility. Choose an alternative if your environment depends on DNS providers outside those three, requires failover methods beyond DNS records, or calls for a broader managed monitoring platform.

Your product? Our editors can test ddup in depth and publish a review, labelled as paid · from $149/mo →

ddup pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

ddup fact sheet

Free plan	Not verified
Paid from	Free
Monitored endpoints	Not verified
Check interval	Not verified
Failover methods	Dns record
Check regions	Not verified
API access	Not verified
Terraform provider	Not verified
Deployment	Self-hosted
Platforms	Linux
Support	Community
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations	3 integrations: Azure DNS, Cloudflare DNS, OVH
Pricing	Open source
Website	github.com
Facts checked	21 Sep 2026

ddup integrations

ddup lists 3 integrations on its own site.

Azure DNS
Cloudflare DNS
OVH

Alternatives to ddup

See all ddup alternatives →

Used ddup? Be the first to review it

The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used ddup for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

Write a reviewTwo minutes · verified accounts only · read by an editor before it appears

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Title

Your review

0 characters · at least 80, up to 3,000

Pros (optional · one per line)

Cons (optional · one per line)

Your name (shown with your review)

Role (optional)

Company (optional)

How long have you used it?

I've used ddup myself and this is my honest opinion — nobody paid or asked me to write it.

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

ddup is listed in our DNS Failover Services directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/ddup/"><img src="https://www.itechguides.com/best/badge/ddup.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update