HTTP response header

To create a middleware that records the response time for requests in HTTP servers. The "response time" is defined here as the elapsed time from when a request enters this middleware to when the headers are written out to the client.

Header usage statistics

X-Response-Time response header information and usage statistics.

Websites using header X-Response-Time 6,441
Percentage of websites that use X-Response-Time header <0.1%
Total discovered header values 4,493
Header uses directives No
Header values are unique or random No
Most popular in the country Canada

Distribution by websites popularity

X-Response-Time detection in the top websites by popularity

Top 10k sites 33 websites
Top 100k sites 76 websites
Top 1m sites 283 websites

Websites utilizing X-Response-Time

List of websites that use X-Response-Time header

Domain Country Rank Contacts
twitter.com United States of America 3
t.co United States of America 44
pbs.twimg.com United States of America 138
www.tumblr.com United States of America 178
www.ticketmaster.com United States of America 327
www.history.com United States of America 461
See full domain list
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-Response-Time header values

Header value Value prevalence
3 1.30%
0.000 1.02%
2 0.39%
0.001 0.39%
4 0.34%
5 0.33%
6 0.29%
0ms 0.22%
8 0.20%
0 0.17%
1 0.17%
7 0.17%
4ms 0.16%
1ms 0.16%
0.002 0.14%
3ms 0.14%
6ms 0.11%
5ms 0.11%
66.47ms 0.11%
10ms 0.09%