Blacklist Check

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Some websites or networks block IP addresses for a variety of reasons. Then, there are websites which prohibits certain IP address in terms of location from accessing their services.

An IP address that is included in the black list are included in either the SURBL systems or the DNSBL systems. These are spam-blocking lists which are simply called blacklists.

If you suddenly find yourself kept away from forums or unable to send emails, chances are, your IP has been blocked by the website admin or user you are trying to access.

As more and more normal, day to day activities are advanced and taken online, more spammers and violators also sprout up to wreck trouble. That is why blacklisting is becoming more relevant online.

However, it is not always the online troublemakers that find themselves locked out of certain websites or email servers.

Some people who have not engaged in such dubious activities in the internet may sometimes find themselves blacklisted as well.

The reason for this is they have been assigned an IP address which has before engaged in suspicious online actions.

Remember that the IP addresses that regular folks use to communicate online are dynamic. Meaning that they are merely leased by internet service providers for a span of time. These IPs are reused and unfortunately, a guiltless internet user may be assigned an IP which has previously been abused by an internet troll or menace.

What to Do

The good news is that there are convenient ways to check if one’s IP has been blocked. There is a list of anti-spam DNS-based databases which can be checked to see if an IP has been blocked from there. Users do not need to worry about having a technical background or skills to determine their IP status or to have their address be lifted off from the list.

It is on these lists that internet service providers or web servers black lists certain IPs which are flagged with suspicious online deeds.

There are many existing lists online but here are the most commonly used ones:


Most of these lists contain the abbreviation DNSBL in it.

Things You Should Know about DNSBL

DNSBL or Domain Name System Blacklists allows administrators or owners of web sites to flag or block messages from certain systems which show a history or spamming activities.

The same also functions as an email blocker to filter out certain servers in order to reduce if not eliminate the volume of junk mail clients.

There are three components that primarily makes up a DNS Blacklist:

  1. domain name host
  2. server to host the said domain
  3. list of addresses wherein the list will be published

Reporting Spam

How is spam reported in the first place?

If internet users find themselves at the receiving end of spams, they can help reduce these online nuisance by forwarding the messages to the Federal Trade Commission. The agency can be reached at When recipients know the source of the spam message, they can also forward the messages to the email providers of the sender.

How the Blacklist Check Figures In

Checking one’s IP address from the blacklists available online can be conveniently done through the Blacklist checking tool. By entering one’s IP, the tool will check as well as a host of other lists if the IP has been registered there.

FAQs of Blacklist Check Simplified

Unknown to most people, manually going through one’s email is not as simple or convenient as it sounds. What people mostly receive from their Inboxes have already been filtered by their email servers.

An approximate of 80 – 95 percent of emails sent out on the internet every day is a spam. This alarming rate has resulted to hundreds of blacklists online in an effort to regulate spamming.

Because of this, blacklisting IPs or servers is no longer uncommon. However, there are still many people who find being blacklisted startling, thinking that this is particularly connected to them.

Here are common issues that arise about blacklisting:

Why am I on a blacklist?

Contrary to what people think, being on a server blacklist is not always personal. This incident is not uncommon for public or dynamic IP. Chances are, this could only be due to the total volume of mail outsourced from the shared server. Another reason is that the message may contain characteristics which have been recognized or tagged as spam. Another contributing factor is email forwarders.

How to determine if you’re blacklisted

Blacklists employ different criteria such as evidence-based listings, technical listings, and policy listings. Technical listings are the ones which happen from issues concerning mail server configuration. This includes incorrect or missing reverse DNS records, incorrect or missing banner greetings, and mail servers which operate as Internet Protocol address space that internet service providers have specified to not operate in.

Policy listings occur when the ones based on operators do not want to get emails from specific countries or even internet service providers.

Evidence listings are the ones which occur when operators receive indirect or direct proof that certain IPs are involved in sending out unsolicited emails or spams.

Most blacklisting websites provide reasons for the listing but will not render access to the addresses the email was sent to.

How to resolve the underlying issue

After confirming that an IP has been blocked, the persons concerned can then move on to the process of resolving the issue.

Users should first make sure that the basics are covered. That is, check if the mail server, computers, and networks are all configured correctly. The most common resolution steps are machine scanning for viruses that may be existing in the network, STMP banners, resolving forward and reverse DNS logs, patching up the computer’s operating systems, reinforcing strong passwords, and securely configuring routers.

What constitutes a SPAM message?

Because spam messaging constitutes substantial weight in blacklisting, it is wise to know what makes an email spam.

Spam emails are filtered out not only because they are a source of annoyance but also because of the threats they pose.

If you are an email marketer, it is important to know that some email service providers may have put up safety precautions that may filter out your messages and prevent them from reaching your target market.

By definition, an email is flagged as spam if it meets the following categories:

  1. Mass Mails

When the email is sent simultaneously or one after another to large groups of recipients.

  1. Anonymous Sending

When the email is sent without the identity or email address of the sender being revealed.

  1. Unsolicited Messaging

When the email is sent out without the request of the addressees.

Other Things to Keep in Mind about Blacklisting

Blacklisting Legalities

Before going on blacklist websites, it is important to note that the act of blacklisting is legal to most countries. Therefore, it is pointless to threaten to take legal actions to internet service providers, website owners, companies, or people which are involved in the blacklisting of your IP.

The blacklist does not technically prevent people from sending out messages. It is the receiving mail server operator which has been set to consult a third party (blacklist) before receiving certain types of email.

How to Get De-listed

Depending on the blacklisting system used, the IP blacklisting registration can be automated or manual. Delisting an IP is therefore done in the same manner.

Most automatic blacklist deletes an IP from their listings when there is no spamming activity detected for seven days. Manual blacklisting services are the ones wherein the user has to contact them deliberately to be delisted.

Why Blacklist Check is Important to You

It is distressing enough to be blacklisted. However, having to get oneself from being removed from blacklists is another matter. The traditional way is to visit every blacklist website to check if one’s IP has been logged there. Because there are hundreds of these websites, this process can take up a lot of time and effort and can be very frustrating.

This slow, excruciating process is resolved by Blacklist check.

Users can just enter their information, click the search button, and the list of blacklists they are registered in are pulled up.

Because being blacklisted is frustrating and time-wasting, the process in which to resolve it should be fast and easy.



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