HTTP response header

Header usage statistics

Warning response header information and usage statistics.

Websites using header Warning 2,413
Percentage of websites that use Warning header <0.1%
Total discovered header values 352
Header uses directives No
Header values are unique or random No
Most popular in the country Bulgaria

Distribution by websites popularity

Warning detection in the top websites by popularity

Top 10k sites 6 websites
Top 100k sites 36 websites
Top 1m sites 209 websites

Websites utilizing Warning

List of websites that use Warning header

Domain Country Rank Contacts
www.feedster.com Bulgaria 954
www.adweek.com United States of America 1,674
www.lesechos.fr United States of America 4,936
www.straitstimes.com United States of America 5,079
www.adac.de Germany 6,979
www.welivesecurity.com United States of America 9,998
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 Warning header values

Header value Value prevalence
110 Response is stale 29.26%
113 ApacheTrafficServer/7.1.5 25.49%
111 ApacheTrafficServer/7.1.5 6.80%
214 UploadServer gunzipped 3.48%
Redirect 3.44%
110 kube-router "Response is Stale" 2.20%
110 - "Response is stale" 1.74%
Requests for unofficial addresses will get ban by IP/DNS. 1.45%
111 Revalidation failed 1.41%
110 squid/3.1.16 "Response is stale" 1.16%
Contains awesome content 0.99%
110 squid/4.11 "Response is stale" 0.95%
110 squid "Response is stale" 0.79%
113 squid/4.11 "This cache hit is still fresh and more than 1 day old" 0.79%
110 varnish "Response is Stale" 0.75%
299 GBA "Generic Bootstrapping Architecture (3GPP TS 33.220) support is required to access the requested resource" 0.54%
199 Cache-control headers were ignored because the caller was unauthorized. 0.54%
113 images-squid07 (squid) This cache hit is still fresh and more than 1 day old 0.50%
113 Heuristic expiration 0.46%
199 Missing request header [ accept = application/json ] when calling a JSON API. 0.33%