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 29,274
Percentage of websites that use access-control-expose-headers header 0.27%
Total discovered header values 869
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)

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

access-control-expose-headers Directives

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

Directive Share Websites count Unique Values
request-context 25.67% 7,516 1
content-length 23.35% 6,836 1
date 16.79% 4,916 1
transfer-encoding 16.13% 4,722 1
x-frontend 12.71% 3,722 1
location 7.14% 2,090 1
content-range 6.86% 2,008 1
x-request-id 4.88% 1,430 1
content-type 3.83% 1,120 1
cache-control 2.25% 660 1
range 2.15% 629 1
x-requested-with 1.92% 561 1
if-modified-since 1.67% 490 1
user-agent 1.63% 476 1
keep-alive 1.60% 469 1
dnt 1.60% 468 1
x-customheader 1.55% 453 1
x-csrf-token 0.97% 283 1
* 0.90% 263 1
x-proxy-cache 0.86% 253 1
x-fb-cec-video-limit 0.63% 183 1
x-frame-options 0.53% 156 1
api-version 0.39% 115 1
x-cdn-diag 0.26% 75 1

Distribution by websites popularity

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

Top 10k sites 114 websites
Top 100k sites 315 websites
Top 1m sites 3,066 websites

Websites utilizing access-control-expose-headers

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

Domain Country Rank Contacts
facebook.com Ireland 2
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.ticketmaster.com United States of America 327
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 access-control-expose-headers header values

Header value Value prevalence
Request-Context 31.19%
x-ms-request-id,Content-Length,Date,Transfer-Encoding 19.63%
X-Frontend 14.03%
Location, X-Request-Id 5.69%
Content-Length,Content-Range 4.33%
Location 2.51%
X-Log, X-Reqid 1.13%
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 1.11%
* 1.08%
Content-Type 0.84%
AMP-Access-Control-Allow-Source-Origin 0.73%
X-FB-CEC-Video-Limit 0.72%
Content-Length 0.61%
DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range 0.52%
API-Version,X-FRAME-OPTIONS,Content-Security-Policy 0.47%
X-Auth-Token 0.44%
Origin 0.37%
Content-Length,Content-Disposition,Content-Range,Etag,Server-Timing,Vary,X-Cld-Error 0.37%
Authorization 0.34%
True 0.31%