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 | 2,538,910 |
| Percentage of websites that use Access-Control-Allow-Origin header | 2.66% |
| Total discovered header values | More than 10,000 |
| Header uses directives | Yes |
| Header values are unique or random | No |
| Most popular in the country |  US |
Access-Control-Allow-Origin Directives
Access-Control-Allow-Origin directives value information and usage statistics| Directive | Share | Websites count | Unique Values |
|---|---|---|---|
| * | 86.44% | 2,194,596 | 1 |
| null | 0.27% | 6,965 | 1 |
Distribution by websites popularity
Access-Control-Allow-Origin detection in the top websites by popularity| Top 10k sites | 1,271 websites |
| Top 100k sites | 10,533 websites |
| Top 1m sites | 76,770 websites |
Websites utilizing Access-Control-Allow-Origin
List of websites that use Access-Control-Allow-Origin header| Domain | Country | Rank | Contacts |
|---|---|---|---|
| US | 14 | ||
| US | 26 | ||
| US | 31 | ||
| US | 33 | ||
| US | 34 | ||
| US | 42 |
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 Access-Control-Allow-Origin header values| Header value | Value prevalence |
|---|---|
| * | 86.28% |
| https://developer.cimpress.io | 2.65% |
| https://app.hu-manity.co | 0.66% |
| *.iyp.tw | 0.53% |
| https://img-fl.nccdn.net | 0.31% |
| null | 0.27% |
| cdn.kotisivukone.fi | 0.25% |
| https://pixieset.com | 0.23% |
| http://gammatesting.jdseller.com | 0.15% |
| https://s7.addthis.com | 0.12% |
| https://admin.thebase.in | 0.11% |
| https://park.101datacenter.net | 0.10% |
| undefined | 0.08% |
| https://imgur.com | 0.08% |
| cross-origin | 0.08% |
| https://pixieset.com/ | 0.07% |
| https://img-to.nccdn.net | 0.06% |
| https://www.matthies.de | 0.06% |
| none | 0.05% |
| http://localhost:3000 | 0.05% |