Get 20% OFF for your first month with the Starter Plan – Start today 🎉
Table of contents

UCEPROTECTL3 Blacklist : How can you remove your IP ?

damien ceo mailreach
Damien Brenelière
Co-Founder @ MailReach & Email Deliverability Expert

Finding out that your domain / IP is listed on the UCEPROTECTL3 blacklist can be frustrating and confusing, especially if nothing particularly wrong has been done on your end. Don’t worry, we got your back. You’ll find explanations and reassuring information in this short article.

UCEPROTECTL3 - 6 crucial things to know - blog image

UCEPROTECTL3 blacklist

UCEPROTECTL3 didn’t blacklist YOU directly, but your ENTIRE HOST and/or domain provider’s host.


There are 3 levels of blacklisting with UCEPROTECT:

  • UCEPROTECTL1 : listing of single particular IP addresses.
  • UCEPROTECTL2 : listing of multiple IP addresses
  • UCEPROTECTL3 : listing of whole ranges of IP addresses

UCEPROTECTL3 blacklists whole ranges of IP addresses based on hosts / domain registrars so it’s not your particular IP as a person or a company.

In short, it’s your whole host and all its customers.

UCEPROTECTL3 blacklist

UCEPROTECTL3 lists hundreds of hosts including Namecheap, Digital Ocean, OVH, etc. 

Why does UCEPROTECT blacklist entire hosts penalizing all their customers even if many of them don’t send any spam?

Because there’s a certain percentage of users sending spam from this host and UCEPROTECT decided this host deserves to be blacklisted on UCEPROTECTL3.

They claim to do that to push the hosts to take care of the spam activity of some of their users.

Let’s say your host and/or your domain registrar is Namecheap.

A lot of spammers use Namecheap to register their domains as they’re usually cheaper there. 

By default, a domain bought on Namecheap points to one of Namecheap's servers (IPs). 

The spammers represent a certain % of all Namecheap customers. 

As a result, UCEPROTECT decided to list all IPs of Namecheap on UCEPROTECTL3. 

UCEPROTECTL3 blacklist

UCEPROTECTL3 and Gmail : Which impact on email deliverability? 

The major inbox providers are Google (Gmail and Google Workspace) and Microsoft (Outlook / Exchange / Office 365). 

These big providers use their own systems to decide if your emails will land in inbox or spam. And they have their own way of scoring your sender reputation. 

Blacklists like UCEPROTECTL3 are external services / companies. In most cases, Google and Microsoft don’t care about them. 

Google and Microsoft have a much better and reliable way to know if you’re a spammer or not. 

How? By checking how their users react to your emails. 

Basically, if you send emails to Google inboxes and an important part of your emails are opened, replied positively, marked as important, removed from spam, it tells Google that you’re an interesting sender and you deserve to land in inbox, not in spam. 

However, if your emails don’t get enough openings, replies, stars and worse, are marked as spam, it tells the inbox providers that you send irrelevant emails and deserve to land in spam. 

At MailReach, we regularly check our data to see the impact of blacklists on deliverability. 

There are thousands of domains from our customers linked to MailReach and hundreds of them are listed on UCEPROTECTL3. For 99% of them, it has zero impact on their sender reputation and deliverability. 

To conclude this statement: UCEPROTECTL3 won’t prevent you from getting a perfect deliverability. 

UCEPROTECTL3 blacklist

UCEPROTECTL3 removal possible ?

You can’t be removed from , only your host can but that’s OK.  UCEPROTECT mentions it on their website :

"We know that it's hard to list complete ASN's, but we expect that providers or carriers become active long before they end in UCEPROTECT-Level 3.


If you never sent spam, never maintained an open proxy or open relay, but the provider hosting your email server is listed as LEVEL 3, we suggest you send a strong compliant about it to your service provider, and request them to get active against abusers before listings are escalated to Level 3.

Removal requests from end customers at LEVEL 3 are futile.

Only your service provider can change your situation.

But guess what, that’s OK as UCEPROTECTL3 has, in most cases, zero impact on deliverability.

Just relax, let go and follow our recommendations below.

UCEPROTECTL3 blacklist

Your TOP priority is to check where your emails land - Good news, we have the perfect (free) tool to help. 

As we’ve seen above, most external blacklists have little to no impact on deliverability towards Google and Microsoft inboxes (who represent most of the inbox market).

And, in all cases, blacklisted or not, the ONLY thing that matters is where your emails land on the type of inboxes you target. Everything else is noise. 

You need to check how your deliverability is doing and take action if needed. 

To get your deliverability score and find out if your emails are blacklisted or where your emails land on the major providers, you can use MailReach’s Free Email Spam Test. Most of the other existing tools are biased and/or not reliable to properly measure your inbox placement. 

Basically, you simply have to send an email (in real sending conditions) to a list of 31 inboxes given by MailReach and we’ll give you a detailed report on your deliverability including all the things you can improve to land more in inbox. 

You get a score out of 10 and a list of checks (content, spam words, links, tracking, blacklists and many more)

UCEPROTECTL3 : MailReach spam checker report
MailReach's Email Spam Test to check if UCEPROTECTL3 has an impact or not.

UCEPROTECTL3 blacklist

If you send email campaigns make sure to monitor, raise and maintain your sender reputation with a proper email warmer like MailReach.

To have a great email deliverability and deliver all your emails to the inbox of your recipients, you need to have a good sender reputation.

Your sender reputation is mostly influenced by how your recipients react to your emails. 

In other words, the more positive engagement you get on your emails, the more likely you are to reach the inbox. 

By getting positive interactions to your emails (openings, positive replies, stars, removing your emails from spam) it teaches Google and Microsoft to put your emails in the inbox of their users. 

That’s the job of MailReach’s email warm up service : generating a perfect email activity to your inbox by starting conversations with a network of thousands of inboxes.

Each of your warming emails are opened, replied positively, marked as important and removed from spam. It raises your sender reputation and, in turn, your deliverability. 

UCEPROTECTL3 : email warmer dashboard
MailReach's email warmer to improve your deliverability - UCEPROTECTL3

UCEPROTECTL3 blacklist

Final thoughts on UCEPROTECTL3

Being listed on UCEPROTECTL3 like UCEPROTECTL2 is harmless most of the time and it’s not because of you but your hosting provider. 

That being said, we ACTIVELY recommend you to check your deliverability by running a spam test using our Spam Checker to see where your emails land. 

Landing in spam makes you lose money as it makes you miss customers.

An email spam test will help you see where you’re at in terms of spam score and if you don’t have 10/10 even when following the recommendations of the Spam Checker, that means there’s a high probability that you sender reputation needs to be improved. 

Consider using our email warm up tool to monitor and maximize your sender reputation and make sure to avoid the spam folder. 

MailReach is compatible with any inbox / SMTP

No items found.
No items found.

More resources for your deliverability

Made with ❤️ and 🥖 in Paris, France 🇫🇷