Available at suped.com/blocklists.
Check any domain or IP address against 100+ email blocklists. No account required for ad-hoc lookups.
How it works
Enter a domain or IP address and the checker queries over 100 blocklists simultaneously.
Results
Each blocklist returns one of three statuses:
- Listed (red) - Your domain or IP is on this blocklist. This may affect email delivery.
- Clear (green) - Not listed. No action needed.
- Error/Timeout (grey) - The blocklist didn't respond. This is normal for some lists.
Each blocklist entry links directly to its delisting page so you can request removal if needed.
Blocklist categories
Blocklists are categorized by importance:
- High - Major blocklists that significantly impact delivery (e.g. Spamhaus, Barracuda)
- Medium - Moderately used blocklists
- Low - Less commonly checked by receivers
- Inactive - Blocklists that are no longer actively maintained but may still be queried
Ongoing monitoring
The blocklist checker is great for one-time lookups. If you need continuous monitoring with alerts when your domain or IP gets listed, sign up for blocklist monitoring.
