--- title: "Download list of all Kestrel sites" description: "Every website running Kestrel, with domain, DNS, WHOIS, IP address, hosting country and global rank on each row. One file, rebuilt daily." url: https://webatla.com/technology/kestrel --- [Home](https://webatla.com/) › [Technologies](https://webatla.com/technology) › [Web servers](https://webatla.com/technology?category=Web%20servers) › Kestrel ![Kestrel logo](https://webatla.com/assets/tech-logos/kestrel.png) # Download websites that use Kestrel 3,730,722 live sites using Kestrel right now Web servers · by Microsoft · since 2016 · open source 3.7M sites, Dataset updated · 2026-10-27 Categories [Web servers](https://webatla.com/technology?category=Web%20servers) [🔒 Get the list](https://webatla.com/technology/kestrel#preview) Requires a dataset purchase [About Kestrel](https://webatla.com/technology/kestrel#overview) [Database preview](https://webatla.com/technology/kestrel#preview) [By country](https://webatla.com/technology/kestrel#by-country) [By TLD](https://webatla.com/technology/kestrel#by-tld) [Download](https://webatla.com/technology/kestrel#download) All figures as of Oct 27, 2026 All figures here come from one snapshot of the webatla database, taken on this date (UTC). We usually refresh it every day. 3,730,722, Sites detected 1.2%, Of all websites ## Preview Kestrel site datasets Kestrel detection is a value inside the **Technologies** column. Two datasets carry it. **Technologies · €159 / month · 3,730,722 rows · 14 columns · webatla-technologies-kestrel-2026-10-27.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 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | similarweb.com | [com](https://webatla.com/tld/com) | [com](https://webatla.com/tld/com) | ICANN | HTTP 200 | 100.30.87.36 | [US](https://webatla.com/country/us) | {…} | 2026-10-25 | Google Ads AW-963844528 , Google Analytics G-4HS4Q4G7H3 G-V5DSP51YD0 +1 , Google Tag Manager GTM-NRWLLQ , HSTS, HTTP/2, OpenAI, Favicon, HubSpot, Kestrel, Postman | 0.0000159833 | 18,980,118 | 2008-04-10 | 2027-04-10 | | datatilsynet.dk | [dk](https://webatla.com/tld/dk) | [dk](https://webatla.com/tld/dk) | ICANN | HTTP 200 | 167.235.95.185 | [DE](https://webatla.com/country/de) | {"linkedin":["https://linkedin.com/company/15201312"]} | 2026-10-13 | HSTS, HTTP/2, Favicon, Kestrel, Lightbox, Open Graph, Microsoft ASP.NET | 0.000013793 | 17,746,680 | 1998-02-16 | 2028-03-31 | | dukeupress.edu | [edu](https://webatla.com/tld/edu) | [edu](https://webatla.com/tld/edu) | ICANN | HTTP 200 | 20.119.136.3 | [US](https://webatla.com/country/us) | {…} | 2026-10-14 | Google Analytics GA4 G-0FJ5H8908M , HSTS, Issuu, cdnjs, Kestrel, Cloudflare, Kontent.ai, Open Graph, Font Awesome 6.7.2 , Microsoft 365 | 0.00000612822 | 18,983,902 | 1999-11-19 | 2027-07-31 | | ourcommons.ca | [ca](https://webatla.com/tld/ca) | [ca](https://webatla.com/tld/ca) | ICANN | HTTP 200 | 20.220.134.182 | [CA](https://webatla.com/country/ca) | {"instagram":["https://instagram.com/ourcommonsca"]} | 2026-10-10 | Google Analytics G-WDVFHW5K08 , HSTS, HTTP/2, Popper, jQuery 3.7.1 , Kestrel, Bootstrap, Microsoft ASP.NET, Cart Functionality | 0.00000137885 | 17,693,176 | 2015-11-26 | 2026-11-26 | | jsonschemavalidator.net | [net](https://webatla.com/tld/net) | [net](https://webatla.com/tld/net) | ICANN | HTTP 200 | 13.89.172.3 | [US](https://webatla.com/country/us) | {…} | 2026-10-20 | HSTS, Prism, HTTP/2, Favicon, GoDaddy, Kestrel, Clipboard.js, Microsoft ASP.NET | 0.00000105502 | 14,860,817 | 2015-03-14 | 2027-03-14 | **All data · €599 / month · 3,730,722 rows · 23 columns · webatla-all-data-kestrel-2026-10-27.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 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | similarweb.com | [com](https://webatla.com/tld/com) | [com](https://webatla.com/tld/com) | ICANN | HTTP 200 | 100.30.87.36 | [US](https://webatla.com/country/us) | {…} | 2026-10-25 | Google Ads AW-963844528 , Google Analytics G-4HS4Q4G7H3 G-V5DSP51YD0 +1 , Google Tag Manager GTM-NRWLLQ , HSTS, HTTP/2, OpenAI, Favicon, HubSpot, Kestrel, Postman | 2026-10-13 | TRUE | {…} | 0.0000159833 | 18,980,118 | 2026-04-15 | RDAP | 2008-04-10 | 2027-04-10 | 2026-04-11 | GoDaddy.com, LLC | {…} | Domain is active | | datatilsynet.dk | [dk](https://webatla.com/tld/dk) | [dk](https://webatla.com/tld/dk) | ICANN | HTTP 200 | 167.235.95.185 | [DE](https://webatla.com/country/de) | {"linkedin":["https://linkedin.com/company/15201312"]} | 2026-10-13 | HSTS, HTTP/2, Favicon, Kestrel, Lightbox, Open Graph, Microsoft ASP.NET | 2026-10-19 | TRUE | {…} | 0.000013793 | 17,746,680 | 2025-08-30 | WHOIS | 1998-02-16 | 2028-03-31 | — | — | {…} | Domain is active | | dukeupress.edu | [edu](https://webatla.com/tld/edu) | [edu](https://webatla.com/tld/edu) | ICANN | HTTP 200 | 20.119.136.3 | [US](https://webatla.com/country/us) | {…} | 2026-10-14 | Google Analytics GA4 G-0FJ5H8908M , HSTS, Issuu, cdnjs, Kestrel, Cloudflare, Kontent.ai, Open Graph, Font Awesome 6.7.2 , Microsoft 365 | 2026-10-16 | TRUE | {…} | 0.00000612822 | 18,983,902 | 2026-07-30 | WHOIS | 1999-11-19 | 2027-07-31 | 2026-07-23 | — | {…} | Domain is active | | ourcommons.ca | [ca](https://webatla.com/tld/ca) | [ca](https://webatla.com/tld/ca) | ICANN | HTTP 200 | 20.220.134.182 | [CA](https://webatla.com/country/ca) | {"instagram":["https://instagram.com/ourcommonsca"]} | 2026-10-10 | Google Analytics G-WDVFHW5K08 , HSTS, HTTP/2, Popper, jQuery 3.7.1 , Kestrel, Bootstrap, Microsoft ASP.NET, Cart Functionality | 2026-10-26 | TRUE | {…} | 0.00000137885 | 17,693,176 | 2025-12-04 | RDAP | 2015-11-26 | 2026-11-26 | 2025-12-04 | easyDNS Technologies Inc. | {…} | Domain is active | | jsonschemavalidator.net | [net](https://webatla.com/tld/net) | [net](https://webatla.com/tld/net) | ICANN | HTTP 200 | 13.89.172.3 | [US](https://webatla.com/country/us) | {…} | 2026-10-20 | HSTS, Prism, HTTP/2, Favicon, GoDaddy, Kestrel, Clipboard.js, Microsoft ASP.NET | 2026-10-18 | TRUE | {…} | 0.00000105502 | 14,860,817 | 2026-03-16 | RDAP | 2015-03-14 | 2027-03-14 | 2026-03-16 | GoDaddy.com, LLC | {…} | Domain is active | [↓ Download preview (20 rows, free)](https://webatla.com/api/v1/sample/technology/kestrel?dataset=technologies) [Buy Technologies · €159 / month](https://webatla.com/account/checkout?dataset=technologies) ## Kestrel sites by country | Country | Sites | Share | | --- | --- | --- | | 🇺🇸 [United States](https://webatla.com/country/us) | 3,629,291 | 98.5% | | 🇭🇰 [Hong Kong](https://webatla.com/country/hk) | 11,946 | 0.3% | | 🇸🇨 [Seychelles](https://webatla.com/country/sc) | 6,712 | 0.2% | | 🇳🇱 [Netherlands](https://webatla.com/country/nl) | 5,643 | 0.2% | | 🇩🇪 [Germany](https://webatla.com/country/de) | 4,638 | 0.1% | ## Kestrel sites by TLD | TLD | Sites | Share | | --- | --- | --- | | [.com](https://webatla.com/tld/com) | 3,627,627 | 97.2% | | [.net](https://webatla.com/tld/net) | 40,265 | 1.1% | | [.cc](https://webatla.com/tld/cc) | 13,810 | 0.4% | | [.uk](https://webatla.com/tld/uk) | 6,205 | 0.2% | | [.org](https://webatla.com/tld/org) | 3,726 | 0.1% | ## The Kestrel dataset Every site we've detected as running Kestrel, with version, hosting, country, TLD and traffic rank. ### Kestrel lives inside 2 datasets Kestrel detection is part of **Technologies** (€159/mo) and **All data** (€599/mo). Buy either to filter the full 3,730,722-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/kestrel?dataset=technologies) ## About Kestrel ### At a glance - **Vendor:** Microsoft - **Website:** docs.microsoft.com ↗ - **Language:** C# - **License:** MIT - **First release:** 2016-06-27 Kestrel sits underneath modern applications on one specific vendor stack, and its presence is one of the clearer organisational tells in the index. As of October 2026 we detect it on 3,730,722 sites, and those sites belong to a different web from the one most technology surveys describe. Applications on this stack are disproportionately internal tools, business-to-business portals, government services and line-of-business systems that happen to be reachable over the public web. They are not built to attract traffic, they rarely appear in popularity rankings, and datasets assembled by crawling popular sites miss them almost entirely. A measurement that starts from the whole domain space rather than from a traffic list is the only way they show up at all. The population is also, on average, more institutional than the web as a whole. Organisations that standardise on a single vendor platform tend to have internal development teams, compliance requirements and budgets, which changes what selling into them looks like. Volume is low and value per row is high, which is precisely the situation where a complete list beats a large one. Where it appears matters more here than elsewhere. United States accounts for 3,629,291 of detections, and unlike consumer platforms this concentration is closer to genuine, since organisations of this type more often host domestically for regulatory reasons. The signal is still about hosting rather than headquarters, but the two align more often in this population than in others. The .com zone leads, though organisational and country-code zones appear at higher rates here than across the web generally, and those rows are frequently the most interesting ones. The webatla export carries every domain we detect it on with the framework above it, the proxy in front of it, the hosting country and the rest of the identified stack, as one file rebuilt daily. There is a structural reason this population is worth measuring separately rather than folding into general server statistics. Applications on this stack are frequently reached through a proxy that terminates the public connection, so the component only becomes visible when something in the response path passes its signature through. Our figures are therefore a floor, and the true footprint inside organisations is larger than what the public web reveals. That understatement runs in a useful direction for prospecting. The sites where the component is visible are disproportionately those with simpler public infrastructure, which tend to be the smaller and more approachable end of an otherwise enterprise-heavy population. The bias is real and worth knowing, and it happens to point toward the more reachable half of the market. Microsoft publishes it under the MIT license as part of the wider platform, and it has been shipping since 2016, written in C#. ## Frequently asked questions How many websites use Kestrel? webatla detects Kestrel on 3.7M websites, refreshed daily, each with its domain, DNS, WHOIS, IP, country and ranking. Can I download the list of websites using Kestrel? Yes, as structured JSONL. Grab a free sample first. 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 Kestrel? Buy the technology dataset, then download the complete list of domains we detect using Kestrel, re-exported every day. What else is in the Kestrel technology data? Each row places Kestrel next to the other technology on the same site, plus DNS, WHOIS, IP, country and ranking. Can I download just the sites using Kestrel, or the whole database? Both. Every site running Kestrel 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 Kestrel? Three steps: (1) grab the free 10,000-row sample to inspect the schema, (2) buy the Technologies dataset, (3) download the full list of every domain we detect running Kestrel 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 Kestrel Pick the dataset that covers what you need. Each one includes Kestrel 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 [![Nginx logo](https://webatla.com/assets/tech-logos/nginx.png) Nginx Server Software · 72.5M sites](https://webatla.com/technology/nginx) [![Apache HTTP Server logo](https://webatla.com/assets/tech-logos/apache-http-server.png) Apache HTTP Server Server Software · 39.9M sites](https://webatla.com/technology/apache-http-server) [![OpenResty logo](https://webatla.com/assets/tech-logos/openresty.png) OpenResty Server Software · 21.0M sites](https://webatla.com/technology/openresty) [![LiteSpeed logo](https://webatla.com/assets/tech-logos/litespeed.png) LiteSpeed Server Software · 6.0M sites](https://webatla.com/technology/litespeed)