gistfile1.txt

~# curl -sSvo /dev/null https://acme-v01.api.letsencrypt.org
* Rebuilt URL to: https://acme-v01.api.letsencrypt.org/
*   Trying 2a02:26f0:10:28d::3d5...
*   Trying 23.77.231.123...
* Connected to acme-v01.api.letsencrypt.org (23.77.231.123) port 443 (#0)
* found 148 certificates in /etc/ssl/certs/ca-certificates.crt
* found 596 certificates in /etc/ssl/certs
* ALPN, offering http/1.1
* SSL connection using TLS1.2 / ECDHE_RSA_AES_256_GCM_SHA384
* 	 server certificate verification OK
* 	 server certificate status verification SKIPPED
* 	 common name: *.api.letsencrypt.org (matched)
* 	 server certificate expiration date OK
* 	 server certificate activation date OK
* 	 certificate public key: RSA
* 	 certificate version: #3
* 	 subject: CN=*.api.letsencrypt.org,O=INTERNET SECURITY RESEARCH GROUP,L=Mountain View,ST=California,C=US
* 	 start date: Fri, 26 Jun 2015 17:05:45 GMT
* 	 expire date: Mon, 25 Jun 2018 17:05:45 GMT
* 	 issuer: C=US,O=IdenTrust,OU=TrustID Server,CN=TrustID Server CA A52
* 	 compression: NULL
* ALPN, server accepted to use http/1.1
> GET / HTTP/1.1
> Host: acme-v01.api.letsencrypt.org
> User-Agent: curl/7.47.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Server: nginx
< Content-Type: text/html
< Content-Length: 2175
< Last-Modified: Tue, 13 Oct 2015 15:42:36 GMT
< ETag: "561d266c-87f"
< X-Frame-Options: DENY
< Strict-Transport-Security: max-age=604800
< Accept-Ranges: bytes
< Expires: Fri, 05 Jan 2018 16:25:59 GMT
< Cache-Control: max-age=0, no-cache, no-store
< Pragma: no-cache
< Date: Fri, 05 Jan 2018 16:25:59 GMT
< Connection: keep-alive
<
{ [1602 bytes data]
* Connection #0 to host acme-v01.api.letsencrypt.org left intact