Timing-Allow-Origin

The Timing-Allow-Origin response header specifies origins that are allowed to see values of attributes retrieved via features of the Resource Timing API which would otherwise be reported as zero due to cross-origin restrictions

Header usage statistics

Timing-Allow-Origin response header information and usage statistics.

Websites using header Timing-Allow-Origin	122,814
Percentage of websites that use Timing-Allow-Origin header	0.15%
Total discovered header values	315
Header uses directives	Yes
Header values are unique or random	No
Most popular in the country	China