curl -Ik https://www.amazon.co.jp
```
$ curl -Ik https://www.amazon.co.jp
HTTP/1.1 503 Service Unavailable
Server: Server
Content-Type: text/html
Content-Length: 62
Strict-Transport-Security: max-age=47474747; includeSubDomains; preload
Cache-Control: no-cache,no-store
Pragma: no-cache
Vary: Accept-Encoding,User-Agent
X-Frame-Options: SAMEORIGIN
Date: Mon, 10 Jul 2017 09:57:34 GMT
Connection: keep-alive
Set-Cookie: skin=noskin; path=/; domain=.amazon.co.jp
```