access-control-allow-origin Directives (2 total)
- *
- null
access-control-allow-origin
HTTP response headerAllows restricted resources on a web page to be requested from another domain outside the domain from which the first resource was served (Indicates whether the response can be shared.)
Header usage statistics
access-control-allow-origin response header information and usage statistics.| Websites using header access-control-allow-origin | 503,848 |
| Percentage of websites that use access-control-allow-origin header | 4.32% |
| Total discovered header values | 23,164 |
| Header uses directives | Yes |
| Header values are unique or random | No |
| Most popular in the country | 
United States of America
|
access-control-allow-origin Directives
access-control-allow-origin directives value information and usage statistics| Directive | Share | Websites count | Unique Values |
|---|---|---|---|
| * | 44.55% | 224,460 | 1 |
| null | <0.1% | 176 | 1 |
Distribution by websites popularity
access-control-allow-origin detection in the top websites by popularity| Top 10k sites | 980 websites |
| Top 100k sites | 4,247 websites |
| Top 1m sites | 36,324 websites |
Websites utilizing access-control-allow-origin
List of websites that use access-control-allow-origin header| Domain | Country | Rank | Contacts |
|---|---|---|---|
|
|
United States of America
|
22 | |
|
|
United States of America
|
39 | |
|
|
United States of America
|
41 | |
|
|
United States of America
|
48 | |
|
|
United States of America
|
74 | |
|
|
United States of America
|
77 |
Geographical Distribution
Header usage distribution by websites across the globe.Common header values
List of top common access-control-allow-origin header values| Header value | Value prevalence |
|---|---|
| * | 55.59% |
| none | 37.10% |
| imageshack.com | 0.13% |
| https://img-fl.nccdn.net | 0.08% |
| cdn.kotisivukone.fi | 0.08% |
| https://academic.oup.com | 0.08% |
| http://lgportal.ddns.net | 0.07% |
| https://pixieset.com | 0.06% |
| http://www.wishpond.com, https://www.wishpond.com | 0.06% |
| https://imgur.com | 0.05% |
| https://ws-paylands.paynopain.com | 0.05% |
| http://beliskin.com | 0.05% |
| http://localhost:3000 | 0.04% |
| null | 0.04% |
| https://park.101datacenter.net | 0.03% |
| undefined | 0.03% |
| https://gc.synxis.com | 0.03% |
| cms.unimelb.edu.au | 0.03% |
| https://bcz.com | 0.02% |
| domain | 0.02% |