# DNS Propagation Checker by G Tech Group

> Professional DNS propagation checking tool that verifies DNS record propagation across 40+ global DNS servers in real-time.

## About

DNS Propagation Checker is a free online tool built by G Tech Group S.R.L.S., an Italian IT company based in Giustino (TN), Italy. It checks how DNS records propagate across 40+ DNS servers distributed worldwide, providing real-time results with an interactive global map.

## Features

- Real-time DNS propagation checking on 40+ global DNS servers
- Support for record types: A, AAAA, MX, TXT, CNAME, NS
- Interactive world map showing propagation status per server
- Color-coded results: green (propagated), red (not propagated), yellow (different value)
- Export results via clipboard copy, WhatsApp, or email
- Available in Italian and English
- 100% free, no registration required
- Progressive Web App (PWA) with offline support

## How It Works

1. Enter the domain name you want to check
2. Select one or more DNS record types (A, AAAA, MX, TXT, CNAME, NS)
3. The tool queries 40+ DNS servers across 6 continents simultaneously
4. Results show propagation status for each server with response time
5. An interactive map visualizes global propagation at a glance

## Common Use Cases

- Verify DNS changes after updating nameservers or DNS records
- Check if a domain migration has fully propagated worldwide
- Diagnose DNS resolution issues across different regions
- Monitor MX record propagation after email provider changes
- Verify TXT records for domain verification (SPF, DKIM, DMARC)

## FAQ

- **How long does DNS propagation take?** Typically 24-48 hours, but can vary from minutes to 72 hours depending on TTL values and DNS provider.
- **What causes slow DNS propagation?** High TTL values, DNS caching at various levels, and slow updates between authoritative and recursive DNS servers.
- **Can I check subdomain DNS?** Yes, enter the full subdomain (e.g., blog.example.com) in the domain field.
- **What do the different colors mean?** Green = record found and matches expected value. Red = record not found or server unreachable. Yellow = record found but differs from majority.

## Links

- Tool: https://dns.gtechgroup.it/
- G Tech Group: https://www.gtechgroup.it/
- Support: support@gtechgroup.it
- Privacy Policy: https://dns.gtechgroup.it/privacy-policy.html
- Terms: https://dns.gtechgroup.it/termini-condizioni.html