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Feature

Domain registration expiry

A valid SSL certificate doesn't help if you lose the domain itself. Xpiry tracks registrar data so you have one place to see when each domain is up for renewal.

RDAP-first, WHOIS fallback

Xpiry queries RDAP first — it's the modern, structured replacement for WHOIS — and falls back to WHOIS for TLDs that haven't shipped RDAP yet. The result is a normalised record with the registrar, registration date, expiry date, and last updated date.

Subdomains share their parent

Registries only hold records for the base domain, so running a separate WHOIS lookup per subdomain just duplicates work and risks getting rate-limited. When you add a subdomain whose parent is already in your account, Xpiry automatically defers registration data to the parent — one lookup, both records always in sync.

Circuit-broken WHOIS

Some registries are temperamental. Xpiry runs each WHOIS server through a per-host circuit breaker — if a server starts failing more than 60% of recent requests, Xpiry stops hitting it for ten minutes instead of hammering it harder. Failed lookups don't break your other checks.

TLDs without public expiry

A handful of TLDs (some country codes especially) restrict or refuse to publish registration expiry. Xpiry knows about these and surfaces an "expiry unavailable for this TLD" message instead of false-alarming you with phantom expiry warnings. SSL monitoring still works on those domains either way.

How often it runs

Domain registration checks run weekly on the Free plan and daily on every paid plan. They run alongside your SSL checks and feed the same alert pipeline.