IPWhois Blacklist
WordPress plugin: check commenter and login IPs against the free IPWhois.net community blacklist, block or flag known abusers, and optionally report spam.
by IPWhois.net · github.com/brkicsivan-wq/ipwhois-blacklist-for-wordpress · website
Install
No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:
wp plugin install https://github.com/brkicsivan-wq/ipwhois-blacklist-for-wordpress/archive/refs/heads/main.zipReadme
IPWhois Blacklist for WordPress
A small WordPress plugin that checks commenter and login IP addresses against the free IPWhois.net community blacklist and turns away known abusers. No API key, no account, 500 requests/day per site.
What it does
- Blocks blacklisted IPs from posting comments (on by default)
- Optionally blocks blacklisted IPs from logging in
- Optionally reports spam-marked comments back to the community feed
- Caches results for 6 hours, so a comment flood is one API call
- Fails open: a real visitor is never blocked because the API blipped
Install
Copy the folder into wp-content/plugins/, activate it, then open
Settings → IPWhois Blacklist.
How the check works
Every comment (and optional login) runs the visitor IP through
GET https://bl.ipwhois.net/api/check?ip=…. The same
IP lookup is available on the website if you
want to inspect an address by hand, with the network owner, ASN and geolocation
alongside its blacklist status.
Full API docs and integration guides (fail2ban, CSF, Nginx and others): ipwhois.net/blacklist/docs.
License
GPL-2.0-or-later.