HTTP response header

The value of this header is used by Visual Studio to determine which version of ASP.NET is in use. It is not necessary for production sites and should be disabled

Header usage statistics

X-ASPNET-VERSION response header information and usage statistics.

Websites using header X-ASPNET-VERSION 154,423
Percentage of websites that use X-ASPNET-VERSION header 1.33%
Total discovered header values 88
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Connected technologies

Technologies that utilize the header

Microsoft ASP.NET, category Web Application Frameworks, total 575,456 websites

Distribution by websites popularity

X-ASPNET-VERSION detection in the top websites by popularity

Top 10k sites 225 websites
Top 100k sites 1,359 websites
Top 1m sites 24,784 websites

Websites utilizing X-ASPNET-VERSION

List of websites that use X-ASPNET-VERSION header

Domain Country Rank Contacts
www.agoda.com United States of America 339
www.geocaching.com United States of America 404
www.spotlight.com United States of America 515
informit.com United States of America 519
www.informit.com United States of America 519
www.who.int United States of America 598
See full domain list

Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-ASPNET-VERSION header values

Header value Value prevalence
4.0.30319 90.61%
2.0.50727 8.62%
1.1.4322 0.19%
0 0.15%
N/A 0.10%
- 0.06%
2.4.9 0.03%
Null 0.02%
[Removed] 0.02%
Lukoil 0.01%
nn 0.01%
SOR-Technology 0.01%
"" 0.00%
SameOrigin 0.00%
Unknown 0.00%
Innova 0.00%
2.0 0.00%
Cannot be determined. 0.00%