Is Spam IP Blocker free?

Yes, Spam IP Blocker is free to use. It is available as a free plugin on WordPress.org.

How many websites use Spam IP Blocker?

Spam IP Blocker has 100 active installations as tracked by WordPress.org.

What are the best Spam IP Blocker alternatives?

Popular alternatives to Spam IP Blocker include Akismet Anti-spam: Spam Protection, Sucuri Security – Auditing, Malware…, WP Mail Logging. You can compare them side-by-side on our comparison pages.

Does Spam IP Blocker work with the latest WordPress?

Spam IP Blocker has been tested up to WordPress 3.1.4. It requires WordPress false+ and PHP false+.

Spam IP Blocker — Reviews, Rating & Alternatives (2026)

Name: Spam IP Blocker
Rating: 5 (1 reviews)
Author: Aleksei Znaev

As of April 2026, Spam IP Blocker is a WordPress spam plugin with 100 active installations and a 5/5 rating from 1 reviews. It has been downloaded 7.8K+ times in total. Requires WordPress false+ and PHP false+. Available on WordPress.org since 2011. Last updated 14 years ago — may have compatibility concerns. Top alternative: Akismet Anti-spam: Spam Protection.

5/51 reviews

100active installs

7.8K+total downloads

15 yearssince 2011

Overview

This is a spam IP blocker. It is free. It marks any new comment as spam automatically when commenter’s IP exists in at least one of ‘.zen.spamhaus.org’ & ‘.bl.spamcop.net’.
Plugin is based on public DNSBL class.
Official page of DNSBL class on PHPClasses.org

Read full description on WordPress.org