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 1,450,795
Percentage of websites that use X-AspNet-Version header 1.46%
Total discovered header values 257
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 6,055,478 websites

Distribution by websites popularity

X-AspNet-Version detection in the top websites by popularity

Top 10k sites 161 websites
Top 100k sites 2,483 websites
Top 1m sites 29,105 websites

Websites utilizing X-AspNet-Version

List of websites that use X-AspNet-Version header

Domain Country Rank Contacts
hugedomains.com United States of America 14
www.hugedomains.com United States of America 14
www.maariv.co.il United States of America 114
www.bbb.org United States of America 322
www.who.int United States of America 360
enable-javascript.com Croatia 381
See full domain list
Flat price per the report, subscription is not required.

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 87.77%
2.0.50727 11.03%
0 0.82%
1.1.4322 0.16%
- 0.03%
arrivia 0.02%
N/A 0.01%
2.0 0.01%
Null 0.01%
********* 0.01%
unknown 0.01%
Lukoil 0.01%
4.0.30128 0.00%
RichemontPartners 0.00%
jz 0.00%
Cannot be determined. 0.00%
[Removed] 0.00%
X 0.00%
NA 0.00%