Как это работает
- 1Enter the domain, selector or public URL requested by the tool.
- 2Run the check. Toolardo validates the input before any network request.
- 3Review the returned DNS, HTTP or HTML details.
← Все инструменты
SERVER · php
HSTS Checker
Inspect a website’s Strict-Transport-Security header, max-age and optional directives. Runs directly from Toolardo without a commercial lookup API.
✓ No commercial API key✓ Direct DNS / HTTP inspection✓ Private-network targets blocked where applicable
Об этом инструменте
Inspect a website’s Strict-Transport-Security header, max-age and optional directives.
Common uses
check hststest hstsverify hsts
Часто задаваемые вопросы
Does this tool use a commercial API?
No. It uses server DNS functions or direct HTTP/HTTPS requests to the public target needed for the check.
Why can a valid check fail?
DNS can be temporarily unavailable, the target may block automated requests, shared hosting can restrict outbound networking, or the site may be offline.
Can this tool access localhost or private networks?
No. Tools that fetch websites block private, loopback, link-local and reserved IP ranges and restrict connections to standard web ports.