⏱️ DNS TTL Checker
Check Time To Live (TTL) values for all DNS records and plan your DNS changes.
Understanding TTL Values
TTL (Time To Live) determines how long DNS records are cached by resolvers. Here's what different values mean:
| TTL (seconds) | Duration | Use Case |
|---|---|---|
| 60 | 1 minute | During migrations or testing |
| 300 | 5 minutes | Before/during DNS changes |
| 3600 | 1 hour | Production default (balanced) |
| 86400 | 24 hours | Stable, rarely-changed records |
Best Practices
- Before migration: Lower TTL to 300 seconds, 24-48 hours in advance
- During migration: Keep low TTL for quick changes
- After migration: Raise TTL back to 3600+ after 48 hours
- Email (MX) records: Can use higher TTL (7200) since email retries