HTTP response header

Header usage statistics

grace response header information and usage statistics.

Websites using header grace 12,272
Percentage of websites that use grace header <0.1%
Total discovered header values 56
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Distribution by websites popularity

grace detection in the top websites by popularity

Top 10k sites 20 websites
Top 100k sites 116 websites
Top 1m sites 748 websites

Websites utilizing grace

List of websites that use grace header

Domain Country Rank Contacts United States of America 406 United States of America 1,157 Brazil 1,569 United States of America 1,781 United States of America 1,781 United States of America 1,957
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common grace header values

Header value Value prevalence
none 72.29%
6h 20.86%
normal(limited) 4.42%
10800.000 0.34%
yes (healthy) 0.27%
30s 0.19%
Fresh Hit 0.19%
21600.000 0.18%
12h 0.15%
hit 0.10%
259200.000 0.09%
normal (healthy server) 0.08%
within grace 0.07%
fromcache_expired_but_grace 0.07%
within ttl 0.07%
1h 0.05%
live 0.04%
stale 0.04%
6.000 0.04%
full 0.03%