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Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
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.
IIS 5.1 Complementary Technologies
Technologies frequently found with IIS 5.1.
Live IIS 5.1 Sites
15
Complementary Tech
9
Most Frequent Complementary Tech
Websites Using IIS 5.1
An unordered, non-ranked list generated from observed technology data.
| Domain | Server Location | ASN | Crawl Date |
|---|---|---|---|
| znak.fi | 🇫🇮 Finland | Kristillinen Media Oy | February 14, 2026 |
| cyberfuzzy.com | 🇩🇪 Germany | Deutsche Telekom AG | February 13, 2026 |
| avanthvac.com | 🇺🇸 United States | Charter Communications Inc | February 13, 2026 |
| curcon.co.uk | 🇬🇧 United Kingdom | British Telecommunications PLC | February 13, 2026 |
| pilotur.dk | 🇩🇰 Denmark | Norlys Digital A/S | February 13, 2026 |
| urianet.com | 🇪🇸 Spain | Vodafone Spain | February 8, 2026 |
| kinneret.org.il | 🇮🇱 Israel | Partner Communications Ltd. | February 8, 2026 |
| xep.com | 🇺🇸 United States | Wave Broadband | February 8, 2026 |
| chorusofone.no-ip.org | 🇺🇸 United States | Windstream Communications LLC | February 7, 2026 |
| zippysystems.com | 🇬🇧 United Kingdom | TalkTalk | February 7, 2026 |
| 15-vers-for-atc.ru | 🇷🇺 Russia | Okb Progress LLC | February 7, 2026 |
| 1-mt.ru | 🇷🇺 Russia | PJSC MegaFon | February 7, 2026 |
| intercardinc.co.kr | 🇰🇷 South Korea | Korea Telecom | February 7, 2026 |
| craftmaki.com | 🇯🇵 Japan | BIGLOBE Inc. | February 6, 2026 |
| perceptmx.com | 🇨🇦 Canada | Rogers Communications Canada Inc. | February 6, 2026 |
Find Your Customers By Their Technologies
12,727,168 domains across 3,651 technologies. Ready for lead generation, market research, and security analysis.
Buy Now — $199.95 USDTop IIS 5.1 Identifiers
Who is using IIS 5.1 and where.
Countries
Top 5 most detected countries for IIS 5.1
ASNs
Top 5 most detected ASNs for IIS 5.1
Languages
Top 5 most detected Languages for IIS 5.1
TLDs
Top 5 most detected TLDs for IIS 5.1
Most Frequent IIS 5.1 Identifiers and Complementary Tech
Most frequently encountered identifiers for IIS 5.1 and its complementary technologies.
| Language | Sites |
|---|---|
| English | 5 |
| Russian | 2 |
| German | 1 |
| Hebrew | 1 |
| Japanese | 1 |
| Spanish | 1 |
| Esperanto | 1 |
| Lithuanian | 1 |
| Basque | 1 |
| Catalan | 1 |
| ASN | Sites |
|---|---|
| PJSC MegaFon | 1 |
| Windstream Communications LLC | 1 |
| Rogers Communications Canada Inc. | 1 |
| Charter Communications Inc | 1 |
| Deutsche Telekom AG | 1 |
| Korea Telecom | 1 |
| Okb Progress LLC | 1 |
| TalkTalk | 1 |
| Partner Communications Ltd. | 1 |
| BIGLOBE Inc. | 1 |
| Vodafone Spain | 1 |
| Norlys Digital A/S | 1 |
| Kristillinen Media Oy | 1 |
| Wave Broadband | 1 |
| British Telecommunications PLC | 1 |
| TLD | Sites |
|---|---|
| com | 7 |
| ru | 2 |
| dk | 1 |
| co.kr | 1 |
| no-ip.org | 1 |
| org.il | 1 |
| co.uk | 1 |
| fi | 1 |
| Country | Sites |
|---|---|
| 🇺🇸 United States | 3 |
| 🇬🇧 United Kingdom | 2 |
| 🇷🇺 Russia | 2 |
| 🇩🇰 Denmark | 1 |
| 🇨🇦 Canada | 1 |
| 🇰🇷 South Korea | 1 |
| 🇪🇸 Spain | 1 |
| 🇩🇪 Germany | 1 |
| 🇫🇮 Finland | 1 |
| 🇮🇱 Israel | 1 |
| 🇯🇵 Japan | 1 |