The modern, standardized replacement for WHOIS lookups, run by domain registries and free to query.

What if RDAP doesn't have data for my TLD?

Coverage is near-universal for common TLDs but not 100%; fall back to your registrar's dashboard for any domain that consistently fails lookup.

IT OpsStructurally Validated

Domain Expiry Monitor

Every week, this looks up your domains' official registration expiry dates via the free public RDAP protocol and alerts your team on Slack when one is within 30 days of lapsing — protecting against the classic 'the domain expired and someone else grabbed it' nightmare.

Automation flow

Step 1

Weekly Trigger

Runs every Monday morning.

Step 2

Read Domain List

Pulls your monitored domains.

Step 3

RDAP Lookup

Queries the domain's official registration data.

Step 4

Filter Expiring Domains

Flags domains within 30 days of expiry.

Step 5

Expiry Alert

Posts a Slack alert.

How it works

1Every Monday morning, your domain list is read.
2Each domain is looked up via RDAP for its official expiration event.
3Anything expiring within 30 days triggers a Slack alert.

Services used

RDAP (free)Google SheetsSlack

What you'll need

An n8n Cloud or self-hosted account
A Google account (Sheets)
A Slack workspace
No paid API needed — uses the free, standardized RDAP protocol (the modern replacement for WHOIS)

What's included

Free, standardized protocol — no paid WHOIS API needed
No-code setup in 10 minutes
Covers any registrar with RDAP support
Pairs well with the SSL Certificate Expiry Monitor

Estimate what this could save you

Times per week

Minutes each time

Your hourly value ($)

3.6 hours/month

≈ $108/month in your time

A rough estimate based on what you enter above — not a guarantee. Actual time saved depends on your process.

Make it yours

Add a second, louder alert tier for domains expiring within 7 days.
Cross-check against your registrar's auto-renew setting so you only get alerted for domains that actually need manual action.
Email a backup contact in addition to Slack for business-critical domains.

Works well with this automation

Incident Status Page Updater

One webhook call updates your status sheet, alerts your team, and emails every subscriber.

$19

IT Ticket Triage Router

New support tickets are auto-categorized, urgency-flagged, logged, and routed to Slack.

$19

SSL Certificate Expiry Monitor

Daily check of your domain watchlist against SSL Labs' free API — alerts before certs expire.

$15

Save with the complete system: IT & Monitoring Bundle

Instead of buying separately: $117 — System: $49

View system

Questions about this template

$15one-time

Secure checkout via Polar. Delivered by email instantly.

Structurally validated: automatically checked for valid n8n format before every deploy.

Difficulty: Easy
Setup time: ~10 min
Integrations: 3
Node count: 5
Format: .json + guide