Best rdap plugins for WordPress
The most popular rdap plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. MDI Spam Sheriff (for GravityForms) leads with fewer than 10 active installs, ahead of OWH Domain WHOIS RDAP (fewer than 10) and QAS Domain Checker (fewer than 10). All 3 plugins tagged “rdap” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
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Top 3 rdap plugins
- 1.
MDI Spam Sheriff (for GravityForms)The most installed rdap plugin, with fewer than 10 active installs. No reviews yet, updated 2 months ago.
- 2.
OWH Domain WHOIS RDAPFewer than 10 active installs. Only 1 review so far, updated 3 months ago.
- 3.
QAS Domain CheckerFewer than 10 active installs. No reviews yet, updated 2 months ago.
All 3 plugins tagged “rdap”

MDI Spam Sheriff (for GravityForms)
Up in the last 7 days:4,620#62,868by Medium Interactive2 months ago
Blocks spam on Gravity Forms by checking every submitted email domain's registration age via RDAP; recently-registered domains are blocked.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

OWH Domain WHOIS RDAP
#70,322by Link Nacional3 months ago
Advanced domain availability checker using modern RDAP protocol for fast and accurate domain searches.
- Installs
- <10
- Rating
- 5.0(1)
- Downloads
- 0/day

QAS Domain Checker
Down in the last 7 days:10,242#73,856by qasolutions2 months ago
A simple, multilingual domain availability checker using the modern RDAP protocol. One block, one shortcode, no setup pages.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day