IP Blacklist Checker


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About IP Blacklist Checker

What does “IP Blacklist Checker” means?

IP Blacklist Checker is a free tool offered by bestseotool.pro that allows you to check whether your IP address or Domain name is listed in any anti-spam blacklist databases.

Your website could be blacklisted if you send out promotional emails to thousands of people without first warming up your email server. If one or more of the recipients marks the email as spam, the email service provider may add the website to a blacklist.

Email service providers use DNSBL or SURBL to check if a website is blacklisted. Email service providers use these services to filter out spam mails before it reaches the user. Spam filters used by email service providers rely on DNSBL services as their first checkpoint. Other hand, SURBL contains a list of websites that have been blacklisted for appearing in the text of spam emails. Both of these methods are used by email service providers to filter out spam mails before it reaches the user.

How to use this IP Blacklist Checker tool?

There are numerous blacklist website lists that it is practically impossible for website owners to identify whether their website is listed on any of them. As a result, you should use a tool to see if your website is on any blacklists.

And that is why we developed this domain blacklist checker tool to help you here!

All you have to do is paste the URL into the blank space and press the "Submit" button. You will receive a list of results indicating whether or not your site is on the blacklist.

This DNSBL checker or blacklist lookup tool is totally free to use. You can use this tool to check the status of your website's IP address across various DNSBL lists without having to sign up or anything.

What is DNSBL?

DNSBL or Domain Name System Blacklists are spam blocking lists that allow network managers to block messages from specific systems that have a history of sending spam.

As the term indicates, DNSBL lists are built on the Domain Name System (DNS), which translates numerical IP addresses into domain names. If the DNSBL's verifier gets spam from a specific domain name, that server becomes blacklisted, and any emails sent from it are marked or rejected by any sites that use the list.

How do DNSBL damage Email Delivery?

Multiple DNSBLs have multiple effects on email delivery. For example, Gmail, Hotmail, and Yahoo appear to consider only a slight number of highly reputed DNSBLs, such as those provided by Spamhaus. Other DNSBLs, have little impact, though some mail systems prioritize specific DNSBLs over others.

Ultimately, the majority of email providers keep their own reject lists. They carefully fortify these lists and very seldom share them with the public. If your IP address is listed on one of these lists, you may be unable to send email to recipients who use that particular provider.