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RDAP Domain Monitor API | Ownership, Expiry & Registrar Signals

Extract crucial domain registration data to protect your brand assets and discover lucrative SEO opportunities. This RDAP domain monitor extracts exact expiration timestamps, nameserver updates, and registrar details, providing a faster, more reliable alternative to legacy WHOIS tools. Whether you are managing a massive portfolio of websites or tracking competitor URLs, you can schedule recurring checks to automatically see when domains change hands or are about to expire. SEO professionals and digital marketers rely on this scraper to track high-value targets across the web. By configuring a daily or weekly schedule, you can catch dropped domains the moment they become available, giving you a distinct advantage in search rankings and backlink acquisition. Missing a renewal can destroy years of organic search equity, making this an essential defensive tool as well. You can run the monitor across up to 500 URLs at once and review the scraped results to identify precise expiration dates, ownership statuses, and a historical summary of changes for every tracked domain. Use this reliable web scraper to automate your domain intelligence pipeline without dealing with severe rate limits or outdated databases.

Store Quickstart

• Start with store-input.example.json for a low-friction dataset run on two well-known domains.
• If that matches your workflow, switch to store-input.templates.json and pick one of:
  • Starter Quickstart (2 Domains -> Baseline + Renewal Summary) for first-run validation
  • Portfolio Watch (Recurring Dataset) for larger domain lists
  • Renewal Watchlist (Expiry-focused Recurring) when expiry retention is the main concern
  • Webhook Renewal Queue (Action-needed Handoff) for expiry or ownership change automation

Key Features

• 🔍 Bulk domain lookup — Check up to 500 domains per run
• 🔄 Change detection — Automatically detects registrar, nameserver, expiry date, and status changes between runs
• ⏰ Expiry warnings — Get alerted when domains expire within your configured threshold
• 🪝 Webhook notifications — Send results to Slack, Discord, or any webhook endpoint
• 📊 Structured JSON output — Clean, consistent data ready for spreadsheets or databases
• 🛡️ Zero anti-bot risk — RDAP is an open protocol; no CAPTCHAs, no blocks

Use Cases

Input

Input Example

{
"domains":["example.com","github.com","google.com"],
"expiryWarningDays":30,
"checkOwnership":true,
"delivery":"dataset",
"snapshotKey":"rdap-domain-monitor-snapshots",
"concurrency":3
}

Input Examples

Example: Single domain RDAP

{
"domains":[
"example.com"
]
}

Example: Bulk portfolio expiry watch

{
"domains":[
"a.com",
"b.com",
"c.org"
],
"emitExpiryAlertDays":60
}

Example: Multi-TLD with custom registry hints

{
"domains":[
"example.jp"
],
"registryHint":"https://rdap.jprs.jp/"
}

Output

Output Example

{
"meta":{
"generatedAt":"2026-03-29T10:15:00.000Z",
"expiryWarningDays":30,
"totals":{
"total":2,
"ok":2,
"changed":0,
"expiring":1,
"errors":0
},
"severityCounts":{
"critical":0,
"high":1,
"watch":0,
"info":0
},
"alertCount":1,
"executiveSummary":{
"overallStatus":"attention_needed",
"brief":"1 of 2 domains need renewal attention. Highest-pressure issue: Domain expires in 12 days",
"recommendedCadence":"daily",
"totals":{
"total":2,
"initial":2,
"ok":0,
"changed":0,
"expiring":1,
"expired":0,
"errors":0,
"actionNeeded":1
},
"topDomains":[
{
"domain":"github.com",
"status":"initial",
"severity":"high",
"brief":"Domain expires in 12 days"
}
],

API Usage

Run this actor programmatically using the Apify API. Replace YOUR_API_TOKEN with your token from Apify Console → Settings → Integrations.

cURL

curl-X POST "https://api.apify.com/v2/acts/taroyamada~rdap-domain-monitor/run-sync-get-dataset-items?token=YOUR_API_TOKEN"\
-H"Content-Type: application/json"\
-d'{ "domains": ["example.com", "github.com", "google.com"], "expiryWarningDays": 30, "checkOwnership": true, "delivery": "dataset", "snapshotKey": "rdap-domain-monitor-snapshots", "concurrency": 3 }'

Python

from apify_client import ApifyClient
client = ApifyClient("YOUR_API_TOKEN")
run = client.actor("taroyamada/rdap-domain-monitor").call(run_input={
"domains":["example.com","github.com","google.com"],
"expiryWarningDays":30,
"checkOwnership": true,
"delivery":"dataset",
"snapshotKey":"rdap-domain-monitor-snapshots",
"concurrency":3
})
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
print(item)

JavaScript / Node.js

import{ ApifyClient }from'apify-client';
const client =newApifyClient({token:'YOUR_API_TOKEN'});
const run =await client.actor('taroyamada/rdap-domain-monitor').call({
"domains":["example.com","github.com","google.com"],
"expiryWarningDays":30,
"checkOwnership":true,
"delivery":"dataset",
"snapshotKey":"rdap-domain-monitor-snapshots",
"concurrency":3
});
const{ items }=await client.dataset(run.defaultDatasetId).listItems();
console.log(items);

Tips & Limitations

• Keep concurrency ≤ 5 when auditing production sites to avoid WAF rate-limit triggers.
• Use webhook delivery for recurring cron runs — push only deltas to downstream systems.
• Enable dryRun for cheap validation before committing to a paid cron schedule.
• Results are dataset-first; use Apify API run-sync-get-dataset-items for instant JSON in CI pipelines.
• Run a tiny URL count first, review the sample, then scale up — pay-per-event means you only pay for what you use.

FAQ

Is there a rate limit?

Built-in concurrency throttling keeps requests polite. For most public APIs this actor can run 1–10 parallel requests without issues.

What happens when the input URL is unreachable?

The actor records an error row with the failure reason — successful URLs keep processing.

Can I schedule recurring runs?

Yes — use Apify Schedules to run this actor on a cron (hourly, daily, weekly). Combine with webhook delivery for change alerts.

Does this actor respect robots.txt?

Yes — requests use a standard User-Agent and honor site rate limits. For aggressive audits, set a higher concurrency only on your own properties.

Can I integrate with Google Sheets or Airtable?

Use webhook delivery with a Zapier/Make/n8n catcher, or call the Apify REST API from Apps Script / Airtable automations.

Related Actors

URL/Link Tools cluster — explore related Apify tools:

• 🔗 URL Health Checker — Bulk-check HTTP status codes, redirects, SSL validity, and response times for thousands of URLs.
• 🔗 Broken Link Checker — Crawl websites to find broken links, 404 errors, and dead URLs.
• 🔗 URL Unshortener — Expand bit.
• 🏷️ Meta Tag Analyzer — Analyze meta tags, Open Graph, Twitter Cards, JSON-LD, and hreflang for any URL.
• 📚 Wayback Machine Checker — Check if URLs are archived on the Wayback Machine and find closest snapshots by date.
• Sitemap Analyzer API | sitemap.xml SEO Audit — Analyze sitemap.
• Schema.org Validator API | JSON-LD + Microdata — Validate JSON-LD and Microdata across multiple pages, score markup quality, and flag missing or malformed Schema.
• Site Governance Monitor | Robots, Sitemap & Schema — Recurring robots.
• Domain Security Audit API | SSL Expiry, DMARC, Domain Expiry — Summary-first portfolio monitor for SSL expiry, DMARC/SPF/DKIM, domain expiry/ownership, and security headers with remediation-ready outputs.

Cost

Pay Per Event:

• actor-start: $0.01 (flat fee per run)
• dataset-item: $0.003 per output item

Example: 1,000 items = $0.01 + (1,000 × $0.003) = $3.01

No subscription required — you only pay for what you use.

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