Retry-After
HTTP response headerThe Retry-After response HTTP header indicates how long the user agent should wait before making a follow-up request. There are three main cases this header is used: When sent with a 503 (Service Unavailable) response this indicates how long the service is expected to be unavailable.
Header usage statistics
Retry-After response header information and usage statistics.| Websites using header Retry-After | 24,217 |
| Percentage of websites that use Retry-After header | 0.22% |
| Total discovered header values | 242 |
| Header uses directives | No |
| Header values are unique or random | No |
| Most popular in the country | 
United States of America
|
Distribution by websites popularity
Retry-After detection in the top websites by popularity| Top 10k sites | 237 websites |
| Top 100k sites | 729 websites |
| Top 1m sites | 4,394 websites |
Websites utilizing Retry-After
List of websites that use Retry-After header| Domain | Country | Rank | Contacts |
|---|---|---|---|
|
|
United States of America
|
13 | |
|
|
United States of America
|
35 | |
|
|
United States of America
|
41 | |
|
|
United States of America
|
42 | |
|
|
United States of America
|
47 | |
|
|
United States of America
|
52 |
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Geographical Distribution
Header usage distribution by websites across the globe.Common header values
List of top common Retry-After header values| Header value | Value prevalence |
|---|---|
| 0 | 51.41% |
| 3600 | 19.49% |
| 86400 | 14.36% |
| 5 | 5.19% |
| 600 | 3.08% |
| 300 | 1.03% |
| 7200 | 0.81% |
| 60 | 0.73% |
| 5400 | 0.60% |
| 604800 | 0.57% |
| 14400 | 0.29% |
| 1800 | 0.17% |
| 120 | 0.14% |
| 10 | 0.13% |
| 30 | 0.13% |
| 172800 | 0.10% |
| 18000 | 0.08% |
| 20 | 0.08% |
| 900 | 0.08% |
| 259200 | 0.07% |