Measured nightly · state as of 2026-10-19
Does IONOS support Domain Connect?
Its Domain Connect API answers, but it does not serve DoDomain's templates today. Setup uses guided manual records, verified against the authoritative nameservers.
Every row below is the nightly watch's own measurement of IONOS's Domain Connect API, not a claim the provider made to us.
| Template | Measured | HTTP | Since | Version | Real apply |
|---|---|---|---|---|---|
| custom-subdomain-cname | not served | 404 | n/a | n/a | not proven |
| domain-verification | not served | 404 | n/a | n/a | not proven |
| custom-subdomain-cname-with-verification | not served | 404 | n/a | n/a | not proven |
| apex-a-with-verification | not served | 404 | n/a | n/a | not proven |
| email-authentication | not served | 404 | n/a | n/a | not proven |
Measured state as of 2026-10-19 12:18 UTC (the date the state last changed; the watch probes every night and writes only when something moves) against api.domainconnect.ionos.com. Control probe google.com/domain-verification answered 200.
Frequently asked questions
Does IONOS support Domain Connect?
Yes for the protocol, no for DoDomain's templates. IONOS's Domain Connect API answered the control probe with 200 in the measured state dated 2026-10-19, so a missing template there is a real answer. For DoDomain's 5 templates: Its Domain Connect API answers, but it does not serve DoDomain's templates today. Setup uses guided manual records, verified against the authoritative nameservers.
Is setup one-click when a customer's domain is at IONOS?
Not today. IONOS does not serve DoDomain's templates, so the connect flow shows guided manual records and verifies them against the authoritative nameservers.
How is this measured?
A scheduled job asks the provider's Domain Connect API for a widely onboarded control template, then for each DoDomain template. A 404 is only believed when the control answers 200. The result is committed as a JSON file and this page is rebuilt from it.
Manual setup at IONOS
Wherever a template falls back to manual records, the connect flow shows IONOS steps beside the exact records to create, and verifies each record against the zone's authoritative nameservers. Enter the subdomain only in Host name; leave it empty for the apex.
The full walkthrough is IONOS CNAME and A record setup.
Keep reading
The whole provider matrix is the state of Domain Connect. To see which provider serves any domain you type in, use the provider detector. New to the protocol? Domain Connect, defined.
No apply has been proven at IONOS, so the state page ledger lists none.
Start on the free plan
No card, no sales call: create an app, mint a session, and watch the first domain verify.