--- title: "Download list of all mod_jk sites" description: "Every website running mod_jk, with domain, DNS, WHOIS, IP address, hosting country and global rank on each row. One file, rebuilt daily." url: https://webatla.com/technology/mod-jk --- [Home](https://webatla.com/) › [Technologies](https://webatla.com/technology) › [Web server extensions](https://webatla.com/technology?category=Web%20server%20extensions) › mod_jk ![mod_jk logo](https://webatla.com/assets/tech-logos/mod-jk.png) # Download websites that use mod_jk 34,014 live sites using mod_jk right now Web server extensions · by Apache Software Foundation · since 1999 · open source 34K sites, Dataset updated · 2026-10-28 Categories [Web server extensions](https://webatla.com/technology?category=Web%20server%20extensions) [🔒 Get the list](https://webatla.com/technology/mod-jk#preview) Requires a dataset purchase [About mod_jk](https://webatla.com/technology/mod-jk#overview) [Database preview](https://webatla.com/technology/mod-jk#preview) [By country](https://webatla.com/technology/mod-jk#by-country) [By TLD](https://webatla.com/technology/mod-jk#by-tld) [Versions](https://webatla.com/technology/mod-jk#versions) [Download](https://webatla.com/technology/mod-jk#download) All figures as of Oct 28, 2026 All figures here come from one snapshot of the webatla database, taken on this date (UTC). We usually refresh it every day. 34,014, Sites detected 0.0%, Of all websites 1.2.40, Most used version ## Preview mod_jk site datasets mod_jk detection is a value inside the **Technologies** column. Two datasets carry it. **Technologies · €159 / month · 34,014 rows · 14 columns · webatla-technologies-mod-jk-2026-10-28.jsonl.zst** | Domain | TLD suffix | TLD | Domain type | HTTP status | IP address | Country by IP | Social networks | Technologies last data checked | Technologies | PR value | Harmonic value | Domain creation date | Domain expiration date | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | avonworldwide.com | [com](https://webatla.com/tld/com) | [com](https://webatla.com/tld/com) | ICANN | HTTP 200 | 134.65.201.160 | [GB](https://webatla.com/country/gb) | {"facebook":["https://facebook.com/avonworldwide"]} | 2026-09-28 | Google Analytics UA-122681385-1 , Google Tag Manager GTM-MR77KFG , Java, UNIX, HTTP/2, mod_jk 1.2.40 , Favicon, OpenSSL 1.0.1e , DigiCert, OneTrust | 0.000000388697 | 17,366,882 | 2018-08-21 | 2027-08-21 | | khu.ac.kr | [ac.kr](https://webatla.com/tld/kr) | [kr](https://webatla.com/tld/kr) | ICANN | HTTP 200 | 175.106.86.97 | [KR](https://webatla.com/country/kr) | {…} | 2026-10-20 | Google Analytics GA4 G-J892J2T8MC , PHP, Java, MySQL, Slick, CentOS, jQuery 3.6.0 , mod_jk 1.2.48 , Favicon, Gnuboard | 0.000000344594 | 17,599,446 | 2000-03-28 | 2027-03-28 | | hkcsl.com | [com](https://webatla.com/tld/com) | [com](https://webatla.com/tld/com) | ICANN | HTTP 200 | 120.88.227.3 | [HK](https://webatla.com/country/hk) | {…} | 2026-10-18 | Google Ads AW-823873306 , Google Analytics G-FBW1H2RXL8 G-NEG3H3G32S UA-52351125-1 UA-52351125-5 UA-52351125-7 +4 , Google Tag Manager GTM-M9WGDTN , Java, UNIX, jQuery, mod_jk 1.2.37 , Favicon… | 0.000000228559 | 17,268,218 | 1997-03-24 | 2027-03-25 | | cure-naturali.it | [it](https://webatla.com/tld/it) | [it](https://webatla.com/tld/it) | ICANN | HTTP 200 | 108.138.26.14 | [US](https://webatla.com/country/us) | {…} | 2026-10-12 | Google Analytics G-7DD9P33ZTL G-DV24MYL5XW UA-11988168-3 UA-11988168-4 +3 , Google Tag Manager GTM-WXSXDNL , Java, HTTP/2, jQuery 3.3.1 , mod_jk 1.2.46 , Favicon, Bootstrap 2024-07-01 , Pinterest… | 0.000000223731 | 17,461,924 | 2009-07-14 | 2027-09-14 | | kookmin.ac.kr | [ac.kr](https://webatla.com/tld/kr) | [kr](https://webatla.com/tld/kr) | ICANN | HTTP 200 | 113.198.215.98 | [KR](https://webatla.com/country/kr) | {…} | 2026-10-21 | Google Analytics GA4 G-C3KS0RXQW8 , Java, Swiper, jQuery 1.11.3 , mod_jk 1.2.49 , Favicon, YouTube, jsDelivr, jQuery UI, GlobalSign | 0.000000193532 | 17,378,422 | 1993-07-26 | 2028-10-15 | **All data · €599 / month · 34,014 rows · 23 columns · webatla-all-data-mod-jk-2026-10-28.jsonl.zst** | Domain | TLD suffix | TLD | Domain type | HTTP status | IP address | Country by IP | Social networks | Technologies last data checked | Technologies | DNS last data checked | DNS Status | DNS records | PR value | Harmonic value | RDAP/WHOIS last data checked | RDAP/WHOIS method | Domain creation date | Domain expiration date | Domain last changed | Registrar | RDAP/WHOIS Record | Response Status RDAP/WHOIS | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | avonworldwide.com | [com](https://webatla.com/tld/com) | [com](https://webatla.com/tld/com) | ICANN | HTTP 200 | 134.65.201.160 | [GB](https://webatla.com/country/gb) | {"facebook":["https://facebook.com/avonworldwide"]} | 2026-09-28 | Google Analytics UA-122681385-1 , Google Tag Manager GTM-MR77KFG , Java, UNIX, HTTP/2, mod_jk 1.2.40 , Favicon, OpenSSL 1.0.1e , DigiCert, OneTrust | 2026-10-19 | TRUE | {…} | 0.000000388697 | 17,366,882 | 2026-08-20 | RDAP | 2018-08-21 | 2027-08-21 | 2026-08-17 | CSC Corporate Domains, Inc. | {…} | Domain is active | | khu.ac.kr | [ac.kr](https://webatla.com/tld/kr) | [kr](https://webatla.com/tld/kr) | ICANN | HTTP 200 | 175.106.86.97 | [KR](https://webatla.com/country/kr) | {…} | 2026-10-20 | Google Analytics GA4 G-J892J2T8MC , PHP, Java, MySQL, Slick, CentOS, jQuery 3.6.0 , mod_jk 1.2.48 , Favicon, Gnuboard | 2026-10-24 | TRUE | {…} | 0.000000344594 | 17,599,446 | 2025-08-18 | WHOIS | 2000-03-28 | 2027-03-28 | 2007-04-02 | Inames Co., Ltd.(http://www.inames.co.kr) | {…} | Domain is active | | hkcsl.com | [com](https://webatla.com/tld/com) | [com](https://webatla.com/tld/com) | ICANN | HTTP 200 | 120.88.227.3 | [HK](https://webatla.com/country/hk) | {…} | 2026-10-18 | Google Ads AW-823873306 , Google Analytics G-FBW1H2RXL8 G-NEG3H3G32S UA-52351125-1 UA-52351125-5 UA-52351125-7 +4 , Google Tag Manager GTM-M9WGDTN , Java, UNIX, jQuery, mod_jk 1.2.37 , Favicon… | 2026-10-18 | TRUE | {…} | 0.000000228559 | 17,268,218 | 2026-03-26 | RDAP | 1997-03-24 | 2027-03-25 | 2026-03-26 | CSC Corporate Domains, Inc. | {…} | Domain is active | | cure-naturali.it | [it](https://webatla.com/tld/it) | [it](https://webatla.com/tld/it) | ICANN | HTTP 200 | 108.138.26.14 | [US](https://webatla.com/country/us) | {…} | 2026-10-12 | Google Analytics G-7DD9P33ZTL G-DV24MYL5XW UA-11988168-3 UA-11988168-4 +3 , Google Tag Manager GTM-WXSXDNL , Java, HTTP/2, jQuery 3.3.1 , mod_jk 1.2.46 , Favicon, Bootstrap 2024-07-01 , Pinterest… | 2026-10-23 | TRUE | {…} | 0.000000223731 | 17,461,924 | 2026-10-05 | WHOIS | 2009-07-14 | 2027-09-14 | 2026-09-30 | Gandi SAS | {…} | Domain is active | | kookmin.ac.kr | [ac.kr](https://webatla.com/tld/kr) | [kr](https://webatla.com/tld/kr) | ICANN | HTTP 200 | 113.198.215.98 | [KR](https://webatla.com/country/kr) | {…} | 2026-10-21 | Google Analytics GA4 G-C3KS0RXQW8 , Java, Swiper, jQuery 1.11.3 , mod_jk 1.2.49 , Favicon, YouTube, jsDelivr, jQuery UI, GlobalSign | 2026-10-24 | TRUE | {…} | 0.000000193532 | 17,378,422 | 2025-08-12 | WHOIS | 1993-07-26 | 2028-10-15 | 2019-09-05 | Inames Co., Ltd.(http://www.inames.co.kr) | {…} | Domain is active | [↓ Download preview (20 rows, free)](https://webatla.com/api/v1/sample/technology/mod-jk?dataset=technologies) [Buy Technologies · €159 / month](https://webatla.com/account/checkout?dataset=technologies) ## mod_jk sites by country | Country | Sites | Share | | --- | --- | --- | | 🇩🇪 [Germany](https://webatla.com/country/de) | 15,230 | 50.2% | | 🇰🇷 [South Korea](https://webatla.com/country/kr) | 3,733 | 12.3% | | 🇨🇭 [Switzerland](https://webatla.com/country/ch) | 2,968 | 9.8% | | 🇺🇸 [United States](https://webatla.com/country/us) | 2,831 | 9.3% | | 🇨🇦 [Canada](https://webatla.com/country/ca) | 1,329 | 4.4% | ## mod_jk sites by TLD | TLD | Sites | Share | | --- | --- | --- | | [.de](https://webatla.com/tld/de) | 11,338 | 33.3% | | [.com](https://webatla.com/tld/com) | 6,875 | 20.2% | | [.ch](https://webatla.com/tld/ch) | 3,424 | 10.1% | | [.kr](https://webatla.com/tld/kr) | 2,173 | 6.4% | | [.eu](https://webatla.com/tld/eu) | 1,728 | 5.1% | ## Version distribution Detected mod_jk versions across all 34,014 sites. | Version | Sites | Share | | --- | --- | --- | | **1.2.40** | 17,518 | 51.8% | | 1.2.48 | 4,375 | 12.9% | | 1.2.46 | 4,243 | 12.6% | | 1.2.42 | 1,151 | 3.4% | | 1.2.37 | 905 | 2.7% | ## The mod_jk dataset Every site we've detected as running mod_jk, with version, hosting, country, TLD and traffic rank. ### mod_jk lives inside 2 datasets mod_jk detection is part of **Technologies** (€159/mo) and **All data** (€599/mo). Buy either to filter the full 34,014-site list, or grab a free preview first. [See datasets](https://webatla.com/pricing) [↓ Download free preview (20 rows)](https://webatla.com/api/v1/sample/technology/mod-jk?dataset=technologies) ## About mod_jk ### At a glance - **Vendor:** Apache Software Foundation - **Website:** tomcat.apache.org ↗ - **Language:** C - **License:** Apache 2.0 - **First release:** 1999-01-01 mod_jk exists to enforce a division of labour that predates most of the modern web. Apache HTTP Server takes the connection, terminates TLS and serves the static files, then hands application requests to Tomcat over the Apache JServ Protocol. The arrangement was standard practice in Java shops for a long time, and the connector is the piece of glue that makes it work. As of October 2026 we see the module on 34,014 sites, and the geography is the first surprise. 15,230 of them are in Germany, with .de the dominant suffix, which is not the distribution a generic web technology produces. Enterprise Java persisted longest in markets with large in-house IT departments, long procurement cycles and a preference for running your own servers, and the Web server extensions footprint here reflects that history rather than any current adoption trend. The connector comes from Apache Software Foundation under Apache 2.0, written in C, and has existed since 1999. Age matters in this case because the architecture it serves went out of fashion while the connector itself carried on receiving releases. Sites still running it are on maintained but unfashionable plumbing, which is a specific and actionable state: not broken, not going anywhere on its own, and eventually somebody's migration project. Version data supports the same reading. 38 distinct versions appear in the dataset and 1.2.40 is the one we see most often, a spread characteristic of software that arrives inside an operating system package or a vendor appliance rather than being pulled fresh by a developer. Upgrades happen when the platform underneath is rebuilt, and for this kind of stack rebuilds can be years apart. What the module implies about a site is unusually concrete. Behind it sits a Java application server, an application that somebody wrote or bought rather than installed from a plugin directory, and an operations team that manages its own front end instead of pushing everything to a managed platform. Application performance vendors, Java migration consultancies, container and platform vendors, and security teams doing external inventory all care about that population, and the protocol itself has a history of serious vulnerabilities when connector ports are left reachable, which gives defenders a reason to know where it runs. Detection is inferential and almost certainly undercounts. The connector announces itself only when the front server is configured to reveal its module list, and hardened builds strip that away, as do the reverse proxies and CDNs that sit in front of many enterprise sites. Absence from the list is not evidence the connector is missing, only that the site did not tell us. Treating the count as a floor is the honest interpretation, and the bias runs toward older, less-tuned deployments that still advertise their internals. A per-domain lookup answers whether one host exposes the module. The download answers whether the Apache-to-Tomcat pattern still has a population worth building a business around, where that population is concentrated, and how fast it drains between releases. Those are the questions a migration offer or a security research programme actually depends on, and they cannot be assembled one host at a time. ## Frequently asked questions How many websites use mod_jk? webatla detects mod_jk on 34K websites, refreshed daily, each with its domain, DNS, WHOIS, IP, country and ranking. Can I download the list of websites using mod_jk? Yes, the list downloads as structured JSONL (zstd), one domain per line. What's included for each site, and how fresh is it? Domain, DNS, RDAP/WHOIS, the full technology stack, IP & country, PageRank and Harmonic, re-detected and re-exported daily. How do I find the websites using mod_jk? Buy the technology dataset, then download the complete list of domains we detect using mod_jk, re-exported every day. What else is in the mod_jk technology data? Each row places mod_jk next to the other technology on the same site, plus DNS, WHOIS, IP, country and ranking. Can I download just the sites using mod_jk, or the whole database? Both. Every site running mod_jk comes in the Technologies dataset, one downloadable file. Or buy All data for the entire database: technologies plus identity, ranking, DNS and RDAP/WHOIS for every domain, combined in one file. Daily fresh export. How do I download the list of websites using mod_jk? Two steps: (1) buy the Technologies dataset, (2) download the full list of every domain we detect running mod_jk as a JSON Lines file. It is re-exported daily, so you can re-download the freshest list any time inside your access window. Each row carries the domain plus DNS, WHOIS, IP, hosting country and rank. ## Get the full list of websites using mod_jk Pick the dataset that covers what you need. Each one includes mod_jk and downloads as JSONL, rebuilt daily. Technologies, 14 columns Full website tech stack per site: CMS, payments, analytics, frameworks. €159 / mo [Buy and download](https://webatla.com/account/checkout?dataset=technologies) [Download preview dataset](https://webatla.com/api/v1/preview?dataset=technologies) All data, 23 columns Everything we have, in a single package. The full webatla universe. €599 / mo [Buy and download](https://webatla.com/account/checkout?dataset=all-data) [Download preview dataset](https://webatla.com/api/v1/preview?dataset=all-data) Want to compare every dataset side by side? [Visit the pricing page](https://webatla.com/pricing) ## Related technologies [Op OpenSSL Security · 1.3M sites](https://webatla.com/technology/openssl) [![Google PageSpeed logo](https://webatla.com/assets/tech-logos/google-pagespeed.png) Google PageSpeed Monitoring · 150K sites](https://webatla.com/technology/google-pagespeed) [![mod_perl logo](https://webatla.com/assets/tech-logos/mod-perl.png) mod_perl Server Software · 119K sites](https://webatla.com/technology/mod-perl) [MS mod_ssl Security · 64K sites](https://webatla.com/technology/mod-ssl)