HTTP response header

Header usage statistics

Keep-Alive response header information and usage statistics.

Websites using header Keep-Alive 29,879,624
Percentage of websites that use Keep-Alive header 30.17%
Total discovered header values 6,430
Header uses directives Yes
Header values are unique or random No
Most popular in the country United States of America

Keep-Alive Directives (2 total)

  • max
  • timeout

Keep-Alive Directives

Keep-Alive directives value information and usage statistics

Directive Share Websites count Unique Values
timeout 100.00% 29,879,336 139
max 81.89% 24,468,193 796

Distribution by websites popularity

Keep-Alive detection in the top websites by popularity

Top 10k sites 1,650 websites
Top 100k sites 23,353 websites
Top 1m sites 325,305 websites

Websites utilizing Keep-Alive

List of websites that use Keep-Alive header

Domain Country Rank Contacts Canada 10 Brazil 37 Switzerland 120 United States of America 133 United States of America 136 United States of America 136
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common Keep-Alive header values

Header value Value prevalence
timeout=5, max=100 42.93%
timeout=15 8.59%
timeout=2, max=100 6.65%
timeout=5, max=75 4.68%
timeout=3, max=100 4.02%
timeout=15, max=100 3.49%
timeout=5 3.14%
timeout=20 2.50%
timeout=2, max=1000 1.50%
timeout=60 1.28%
timeout=30 1.21%
timeout=10 1.02%
timeout=1, max=100 0.89%
timeout=10, max=100 0.68%
timeout=5, max=97 0.58%
timeout=5, max=500 0.56%
timeout=5, max=200 0.55%
timeout=3, max=500 0.53%
timeout=2, max=500 0.49%
timeout=5, max=150 0.45%