Keep-Alive directives (2 total)
- max
- timeout
Keep-Alive
HTTP response headerHeader usage statistics
Keep-Alive response header information and usage statistics.| Websites using header Keep-Alive | 29,579,741 |
| Percentage of websites that use Keep-Alive header | 29.74% |
| Total discovered header values | 6,521 |
| Header uses directives | Yes |
| Header values are unique or random | No |
| Most popular in the country |  US |
Keep-Alive Directives
Keep-Alive directives value information and usage statistics| Directive | Share | Websites count | Unique Values |
|---|---|---|---|
| timeout | 100.00% | 29,579,472 | 95 |
| max | 78.86% | 23,325,568 | 521 |
Distribution by websites popularity
Keep-Alive detection in the top websites by popularity| Top 10k sites | 1,585 websites |
| Top 100k sites | 22,299 websites |
| Top 1m sites | 316,167 websites |
Websites utilizing Keep-Alive
List of websites that use Keep-Alive header| Domain | Country | Rank | Contacts |
|---|---|---|---|
 CA | 10 | ||
 BR | 37 | ||
 CH | 120 | ||
| US | 136 | ||
| US | 136 | ||
| US | 141 |
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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 | 41.31% |
| timeout=15 | 8.45% |
| timeout=5 | 6.45% |
| timeout=2, max=100 | 5.16% |
| timeout=5, max=75 | 4.40% |
| timeout=3, max=100 | 3.59% |
| timeout=15, max=100 | 3.00% |
| timeout=20 | 2.30% |
| timeout=2, max=1000 | 2.09% |
| timeout=60 | 1.35% |
| timeout=30 | 1.18% |
| timeout=5, max=97 | 1.02% |
| timeout=10 | 0.99% |
| timeout=1, max=100 | 0.81% |
| timeout=10, max=100 | 0.66% |
| timeout=2, max=500 | 0.61% |
| timeout=5, max=200 | 0.53% |
| timeout=5, max=500 | 0.51% |
| timeout=300, max=500 | 0.45% |
| timeout=5, max=150 | 0.44% |