🌐 DNS Propagation Checker

Check DNS propagation across 8 global resolvers (Google, Cloudflare, Quad9, OpenDNS). Detect inconsistencies after DNS changes.

Store Quickstart

Start with the Quickstart template (3 domains, A records). For multi-record audits, use Full DNS Audit (A, AAAA, MX, TXT, CNAME, NS).

Key Features

• 🌐 8 global DNS resolvers — Google, Cloudflare, Quad9, OpenDNS, Cisco Umbrella, Level3, Verisign, Dyn
• 📋 7 record types — A, AAAA, MX, TXT, CNAME, NS, SOA
• ⚠️ Inconsistency detection — Instantly spots resolvers that disagree
• ⏱️ TTL reporting — See caching behavior across resolvers
• 📦 Bulk domains — Check up to 200 domains per run
• 🔑 No API key needed — Uses Node.js built-in dns.Resolver

Use Cases

Who	Why
DNS administrators	Verify DNS changes propagated globally before changing URLs
Hosting migrations	Confirm nameserver switch completed at all resolvers
Email deliverability	Check MX, SPF, DKIM TXT records consistency
Security teams	Detect DNS hijacking via inconsistent resolver responses
DevOps teams	Pre-deploy DNS verification for production cutover

Input

Field	Type	Default	Description
domains	string[]	(required)	Domains to check (max 200)
recordTypes	string[]	["A"]	A, AAAA, MX, TXT, CNAME, NS, SOA

Input Example

{
  "domains": ["example.com", "api.example.com"],
  "recordTypes": ["A", "MX", "TXT"]
}

Output

Field	Type	Description
domain	string	Domain queried
recordType	string	DNS record type (A, AAAA, MX, TXT, CNAME, NS)
resolver	string	DNS resolver IP used
values	string[]	Resolved values
ttl	integer	Time-to-live in seconds
queryTimeMs	integer	Query response time
error	string	null

Output Example

{
  "domain": "example.com",
  "recordType": "A",
  "resolvers": [
    {"name": "Google", "ip": "8.8.8.8", "values": ["93.184.216.34"], "ttl": 86400},
    {"name": "Cloudflare", "ip": "1.1.1.1", "values": ["93.184.216.34"], "ttl": 86400}
  ],
  "isConsistent": true,
  "inconsistencies": []
}

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~dns-propagation-checker/run-sync-get-dataset-items?token=YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{ "domains": ["example.com", "api.example.com"], "recordTypes": ["A", "MX", "TXT"] }'

Python

from apify_client import ApifyClient

client = ApifyClient("YOUR_API_TOKEN")
run = client.actor("taroyamada/dns-propagation-checker").call(run_input={
  "domains": ["example.com", "api.example.com"],
  "recordTypes": ["A", "MX", "TXT"]
})

for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

JavaScript / Node.js

import { ApifyClient } from 'apify-client';

const client = new ApifyClient({ token: 'YOUR_API_TOKEN' });
const run = await client.actor('taroyamada/dns-propagation-checker').call({
  "domains": ["example.com", "api.example.com"],
  "recordTypes": ["A", "MX", "TXT"]
});

const { items } = await client.dataset(run.defaultDatasetId).listItems();
console.log(items);

Tips & Limitations

• Compare results across resolvers (8.8.8.8, 1.1.1.1, 208.67.222.222) to verify propagation.
• Use after a DNS change to confirm global rollout before pointing production traffic.
• Query MX + TXT records together to audit email configuration in one run.
• Low TTLs (<300s) propagate fast; high TTLs (>3600s) may take hours globally.

FAQ

Why use 8 resolvers?

DNS caching varies by resolver. Checking multiple reveals which have updated after a change.

What's a typical propagation time?

TTL-dependent. Most DNS changes propagate globally within 1-24 hours.

Does it check geographic propagation?

No — all resolvers queried are major public ones. For geographic checks, use specialized tools.

Can I check private DNS?

No, only public DNS. Internal/private domains return NXDOMAIN.

Does this support DNSSEC validation?

Not currently — DNSSEC chain verification is on the roadmap.

Why do different resolvers return different values?

DNS propagation isn't instant. Different resolvers cache records based on TTL.

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Cost

Pay Per Event:

• actor-start: $0.01 (flat fee per run)
• dataset-item: $0.005 per output item

Example: 1,000 items = $0.01 + (1,000 × $0.005) = $5.01

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