UCEPROTECTL3 blacklists entire networks and ASNs — not individual domains. If you’re listed, it means your hosting provider’s network has widespread spam issues. You can’t request removal yourself, and your ISP must fix the problem.
Step 1: Verify the listing
Check if your IP is actually on UCEPROTECTL3 — here’s how:
Visit the UCEPROTECT lookup tool and enter your sending IP address, or use a third-party blacklist checker that lets you enter your domain (it resolves the IP for you)
Check which level appears (L1, L2, or L3)
If you see L3, your entire hosting provider is blacklisted.
Step 2: Contact your hosting provider
File a formal complaint with your ISP or hosting provider. Explain that their network-level blacklisting is blocking your legitimate emails.
Request these actions:
- Investigation of spam sources on their network
- Immediate steps to stop ongoing abuse
- Timeline for email blacklist removal
Your provider needs to identify compromised accounts, patch vulnerabilities, and implement preventive measures.
Step 3: Request IP reassignment (short-term fix)
Ask your provider to move your IP to a different netblock within their network. This won’t solve the L3 listing, but it might help if you’re also caught in an L2 (subnet) listing.
If your provider frequently lands on blacklists, switch to a host with better email reputation management.
Step 4: Wait for automatic removal
Once spam stops, the Level 1 listings will age out after 7 days. The Level 3 listing disappears when the total L1 impact falls below the threshold. This is free (assuming the abuse stops).
If spam continues, the listing renews automatically.
What about paid removal?
UCEPROTECT offers express delisting for a fee, but it’s temporary and time-limited, and doesn’t fix the root problem. You’ll get relisted if your provider doesn’t clean up their network.
Paid removal isn’t even available if:
- Your network ranks in the top 5 of L3 charts (worst offenders)
- L2 or L3 listings are still increasing
- Recent abuse was detected within the last 3 hours (for L1 listings)
Save your money. Focus on switching providers or waiting for the 7-day expiration.
Why are you on UCEPROTECTL3?
Your domain landed on this list because other users on your provider’s network sent spam.
UCEPROTECT targets the entire service provider when abuse becomes pervasive across their infrastructure.
L3 primarily reflects your provider’s overall abuse level, not just your individual sending.
Monitor your email deliverability
While you wait for delisting, track where your emails land with our email deliverability test — it’s free and shows exactly which mailboxes are blocking you.
Once you’re off the blacklist, run an email warmup to rebuild your sender reputation and prevent future blocks.
Still stuck on UCEPROTECT?
Blacklist issues can tank your email performance even after technical fixes. Authentication errors, poor sending patterns, or reputation damage might still block your emails.
Our deliverability consultants diagnose the full picture—not just the blacklist. Book a consultation to get your emails back in the inbox.
Frequently asked questions about UCEPROTECTL3 delisting
Here are some commonly asked questions about UCEPROTECTL3 delisting:
No. Only your hosting provider can address the network-level abuse causing the L3 listing.
7 days after your provider’s network stops sending spam. If abuse continues, the listing stays active.
Not recommended. It’s temporary and time-limited, and won’t prevent re-listing if the spam problem persists.
Switch hosting providers. Look for companies with strong anti-spam policies and a clean email reputation.
Yes. Some mail servers, especially smaller providers and certain security gateways, check UCEPROTECT. Your emails might bounce or land in spam until the listing clears.
