access-control-expose-headers

HTTP response header

The Access-Control-Expose-Headers response header indicates which headers can be exposed as part of the response by listing their names

Header usage statistics

access-control-expose-headers response header information and usage statistics.

Websites using header access-control-expose-headers 26,219
Percentage of websites that use access-control-expose-headers header 0.23%
Total discovered header values 842
Header uses directives Yes
Header values are unique or random No
Most popular in the country United States of America

access-control-expose-headers Directives (24 total)

  • cache-control
  • content-length
  • content-range
  • content-type
  • date
  • dnt
  • if-modified-since
  • keep-alive
  • location
  • range
  • request-context
  • transfer-encoding
  • user-agent
  • x-csrf-token
  • x-customheader
  • x-fb-cec-video-limit
  • x-frontend
  • x-proxy-cache
  • x-request-id
  • x-requested-with
  • *
  • x-cdn-diag
  • x-frame-options
  • api-version

access-control-expose-headers Directives

access-control-expose-headers directives value information and usage statistics

Directive Share Websites count Unique Values
content-length 24.41% 6,401 1
request-context 24.14% 6,330 1
date 18.27% 4,790 1
transfer-encoding 17.63% 4,623 1
x-frontend 12.67% 3,323 1
content-range 6.53% 1,713 1
location 5.83% 1,528 1
x-request-id 5.27% 1,383 1
content-type 3.97% 1,042 1
cache-control 2.54% 665 1
range 2.48% 651 1
x-requested-with 2.22% 582 1
if-modified-since 1.96% 515 1
user-agent 1.87% 490 1
keep-alive 1.85% 486 1
dnt 1.85% 485 1
x-customheader 1.80% 471 1
x-csrf-token 1.16% 303 1
x-proxy-cache 1.07% 281 1
* 0.74% 195 1
x-frame-options 0.52% 136 1
api-version 0.36% 94 1
x-cdn-diag 0.31% 80 1
x-fb-cec-video-limit <0.1% 8 1

Distribution by websites popularity

access-control-expose-headers detection in the top websites by popularity

Top 10k sites 97 websites
Top 100k sites 279 websites
Top 1m sites 2,667 websites

Websites utilizing access-control-expose-headers

List of websites that use access-control-expose-headers header

Domain Country Rank Contacts
instagram.com United States of America 7
www.instagram.com Ireland 7
vk.com Russian Federation 38
www.udemy.com United States of America 312
www.agoda.com United States of America 339
www.dailymotion.com France 341
See full domain list

Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common access-control-expose-headers header values

Header value Value prevalence
Request-Context 28.54%
x-ms-request-id,Content-Length,Date,Transfer-Encoding 21.53%
X-Frontend 15.45%
Location, X-Request-Id 6.27%
Content-Length,Content-Range 3.85%
DNT,X-CustomHeader,Keep-Alive,User-Agent,X-CSRF-Token,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,X-Proxy-Cache 1.33%
Location 1.11%
X-Log, X-Reqid 1.02%
* 0.92%
X-FB-CEC-Video-Limit 0.83%
AMP-Access-Control-Allow-Source-Origin 0.78%
Content-Length 0.62%
DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range 0.59%
Content-Length,Content-Disposition,Content-Range,Etag,Server-Timing,Vary,X-Cld-Error 0.53%
API-Version,X-FRAME-OPTIONS 0.47%
Content-Type 0.46%
X-Auth-Token 0.41%
Link,X-RateLimit-Reset,X-RateLimit-Limit,X-RateLimit-Remaining,X-Request-Id,Idempotency-Key 0.40%
x-cdn-diag 0.39%
ETag, Content-Length 0.35%