WordPress 4.0.21 icon

WordPress 4.0.21

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WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.

Disclaimer: The data used in this report is collected from the current VersionDB release (February 2026) containing a total of 12,727,168 domains. All statistics reflect this dataset and do not claim to represent all websites globally.

WordPress 4.0.21 Complementary Technologies

Technologies frequently found with WordPress 4.0.21.

Live WordPress 4.0.21 Sites

4

Complementary Tech

19

Most Frequent Complementary Tech

Websites Using WordPress 4.0.21

An unordered, non-ranked list generated from observed technology data.

DomainServer LocationASNCrawl Date
vplaw.ru🇷🇺 RussiaJSC IOTFebruary 13, 2026
hkbeautycs.com🇸🇨 SeychellesGNET INC.February 8, 2026
garnizonsp.ru🇷🇺 RussiaJSC IOTFebruary 8, 2026
cursosaempresas.es🇫🇷 FranceOVH SASFebruary 6, 2026

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Top WordPress 4.0.21 Identifiers

Who is using WordPress 4.0.21 and where.

Countries

Top 5 most detected countries for WordPress 4.0.21

ASNs

Top 5 most detected ASNs for WordPress 4.0.21

Languages

Top 5 most detected Languages for WordPress 4.0.21

TLDs

Top 5 most detected TLDs for WordPress 4.0.21

Most Frequent WordPress 4.0.21 Identifiers and Complementary Tech

Most frequently encountered identifiers for WordPress 4.0.21 and its complementary technologies.

TechnologySites
MySQL4
PHP4
Debian2
Apache HTTP Server2
Google AdSense2
jQuery2
Bootstrap2
Yoast SEO2
Nginx2
Liveinternet2
Vue.js1
jQuery Migrate1
WooCommerce1
W3 Total Cache1
Slider Revolution1
YouTube1
FitVids.JS1
OWL Carousel1
Easy Pie Chart1