WordPress 4.1.21 icon

WordPress 4.1.21

CMS Blogs Visit wordpress.org

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 4.1.21 Complementary Technologies

Technologies frequently found with WordPress 4.1.21.

Live WordPress 4.1.21 Sites

3

Complementary Tech

24

Most Frequent Complementary Tech

Websites Using WordPress 4.1.21

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

DomainServer LocationASNCrawl Date
anvilmotociclette.comUnknownCloudflare, Inc.February 14, 2026
fringe.jp🇯🇵 JapanNTT PC Communications, Inc.February 13, 2026
sepertiini.comUnknownCloudflare, Inc.February 7, 2026

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Top WordPress 4.1.21 Identifiers

Who is using WordPress 4.1.21 and where.

Countries

Top 5 most detected countries for WordPress 4.1.21

ASNs

Top 5 most detected ASNs for WordPress 4.1.21

Languages

Top 5 most detected Languages for WordPress 4.1.21

TLDs

Top 5 most detected TLDs for WordPress 4.1.21

Most Frequent WordPress 4.1.21 Identifiers and Complementary Tech

Most frequently encountered identifiers for WordPress 4.1.21 and its complementary technologies.

TechnologySites
MySQL3
PHP3
Contact Form 72
Cloudflare Browser Insights2
HTTP/32
jQuery2
Cloudflare2
Modernizr2
Yoast SEO1
HSTS1
Apache HTTP Server1
Smash Balloon Instagram Feed1
Prototype1
Google Analytics1
Infinite Scroll1
jQuery Migrate1
Google Hosted Libraries1
Lightbox1
script.aculo.us1
Google Maps1
jQuery UI1
jPlayer1
Google AdSense1
Google Tag Manager1