🚫 S5H
Guide to the s5h.net DNSBL: a manually curated blocklist and how to request delisting.
ℹ️ About This Blocklist
The s5h.net DNSBL is a small, manually curated blocklist maintained by a security researcher. It lists IPs that have exhibited clearly malicious or abusive behaviour.
What a Listing Means
This IP has been manually flagged for malicious or abusive email sending behaviour.
🔢 DNSBL Return Codes
When listed, the DNSBL returns one of these 127.x.x.x addresses. The specific code indicates the reason for the listing.
| Return IP | Meaning |
|---|---|
| 127.0.0.2 | Listed in s5h.net DNSBL |
✅ How to Request Delisting
Review the s5h.net listing policy and contact the operator for removal. The list is manually curated, so context and remediation evidence help.
Request Removal from S5H ↗📚 Official Documentation
🔍 Check Your IP or Domain Against S5H
Run a live blacklist check against all 17 blocklists we monitor, including S5H.