HTTP response header

Header usage statistics

ER-Rule-Id response header information and usage statistics.

Websites using header ER-Rule-Id 9,495
Percentage of websites that use ER-Rule-Id header <0.1%
Total discovered header values 8,374
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Distribution by websites popularity

ER-Rule-Id detection in the top websites by popularity

Top 10k sites 13 websites
Top 100k sites 143 websites
Top 1m sites 791 websites

Websites utilizing ER-Rule-Id

List of websites that use ER-Rule-Id header

Domain Country Rank Contacts United States of America 1,674 United States of America 2,460 United States of America 3,398 United States of America 4,579 United States of America 4,927 United States of America 5,212
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common ER-Rule-Id header values

Header value Value prevalence
r-e67bf84a-d597-4b2a-9b3b-9d237df26b37 0.45%
r-5f757eb9-4b1c-489b-b81f-e156bda2b10c 0.26%
r-887ba5db-2374-4132-be3a-7ee8984bda0a 0.25%
r-7ded867d-a16c-4dc9-9f68-1c3ace35e4f6 0.24%
r-363af171-6c4f-446e-b518-70e19b1bdbf1 0.23%
r-0a49c0e7-59cd-41d4-b655-66d4962c5990 0.22%
r-c421c4c5-de43-41f7-a1bf-8ca41eab1a97 0.19%
r-cbfec84a-0596-49c7-955a-ec56ec752abc 0.17%
r-28ff93d2-ef42-45ee-b415-570f2191f5df 0.15%
r-b8d6f6e5-1ac1-4a20-b215-41572e9a53ac 0.14%
r-75f51067-5d86-4d65-8d3a-179072d6bbd7 0.13%
r-0af055d1-9a03-4926-a4d3-53680e68efbf 0.13%
r-91b79404-a072-43fb-834e-449b6b9a02a7 0.13%
r-65d1df37-99df-4c14-a242-21c75e25f756 0.12%
r-afb65404-89b4-4fb3-a0c2-77ef1ede7a11 0.12%
r-66a1d795-0c5e-4d36-8c24-e882a81d9f95 0.11%
r-908a7838-f072-4071-b6c4-6869ed0af97d 0.11%
r-fc37c57c-d904-486d-b848-39b9cb45252c 0.11%
r-17e6585b-0d07-4467-8d41-27f49fa7ed20 0.11%
r-2e810224-5f02-4b68-b2f4-af26f3aa9214 0.11%