🚫 UCEPROTECT L3
Why UCEPROTECT L3 lists an entire ASN, how the SPAMSCORE is calculated, and why you cannot delist yourself.
Published · Last verified · Maintained by TamingDNS
IP Blocklist (RBL)
dnsbl-3.uceprotect.net
ℹ️ About This Blocklist
Level 3 lists every IP belonging to an entire autonomous system. UCEPROTECT calculates a SPAMSCORE of (Level 1 impacts / total IPs in the ASN) x 100000 and lists the whole ASN at 50 or above, provided at least 50 of its IPs were on Level 1 in the past seven days. Rent a VPS from a provider having a bad week and you can be listed on day one having sent nothing.
What a Listing Means
Your upstream provider's network, not your server, is what got listed. Your own sending history is irrelevant to this row.
🔢 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 UCEPROTECT L3 (the whole ASN is listed, not just your IP) |
⏳ How Listings Clear
An individual customer cannot clear an ASN-level listing. It lifts when the provider cleans up its Level 1 population. UCEPROTECT sells an express removal for a single IP, but it does not clear the ASN listing and it expires. Most large receivers do not query Level 3, so treat it as an early warning about your provider rather than an emergency.
UCEPROTECT L3 lookup / info ↗📚 Official Documentation
🔍 Check Your IP or Domain Against UCEPROTECT L3
Run a live blacklist check against all 20 blocklists we monitor, including UCEPROTECT L3.