Buying IP ranges can already be an involved transaction, but on top of that you’ll need to make sure that the IP range you purchase are listed on any IP blacklist website, and instead are considered “clean”. This means that the IPs in the entire IP range do not appear on any of the 100 global IP blacklists due to spam, inappropriate content, or other unscrupulous activity. Clean IP ranges are simply better for you and your clients. You’ll have less issues to deal with once you allocate the IP range, plus you won’t have to worry about any of our clients complaining with email deliverability for instance.
Let’s take a look at a few steps you can take if you find yourself in possession of a blacklisted IP range:
- Identify the IP blacklist websites Some of the more common IP blacklists include Spamhaus, Barracuda, Sorbs, Spamcop, SURBL, and others. A tool such as MX Toolbox will test a single IP in an IP range against over 100 DNS-based email blacklists so you can identify which are considered blacklisted IPs.
- Request IP Range Removal from the IP Blacklist Operator Each IP blacklist provider has their own set of rules and procedures when it comes to IP blacklist removal of an IP range. The ease of removal of the affected IP’s depend on the level of offense that landed the IP range on the blacklist – repeat or frequent offenders will have more difficulty getting delisted. Some IP blacklist operators provide an abuse desk email address or online forms to be filled out. The time to remove blacklisted IP addresses varies between hours, days, or even as long as weeks.
- Break the IP Blacklisting Cycle Frequent IP blacklist removal is a quick-fix solution for a long-term problem. The cause of IP ranges ending up on IP blacklists is because the affected IP addresses are sending spam to the Internet or engaging in illicit activity. Therefore, the answer is to ensure spam is stopped and identified before it has the chance to reach the wider internet, and that you are also hosting legal content on your IP(s). A single blacklisted IP can affect the entire IPv4 range and compromise hundreds of domains and customers in a shared environment!
The good news is that there are services to help you determine if your IP range has any IPs blacklisted and how to clean them up. Brander Group has a proprietary software that checks an IP range against over 100 global IP blacklists, then creates a detailed IP blacklist report on each IP address, the blacklist it was on, and provides links to delist and clean the IP addresses. The powerful software tool can create run a full /16 IP range (65,536 IPs) in around 24 hours. To find out more, feel free to contact Brander Group