centos5

$ curl -Iv https://ci.nodejs.org
* About to connect() to ci.nodejs.org port 443
*   Trying 104.131.157.73... connected
* Connected to ci.nodejs.org (104.131.157.73) port 443
* successfully set certificate verify locations:
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* SSLv2, Client hello (1):
SSLv3, TLS handshake, Server hello (2):
SSLv3, TLS handshake, CERT (11):
SSLv3, TLS handshake, Server key exchange (12):
SSLv3, TLS handshake, Server finished (14):
SSLv3, TLS handshake, Client key exchange (16):
SSLv3, TLS change cipher, Client hello (1):
SSLv3, TLS handshake, Finished (20):
SSLv3, TLS change cipher, Client hello (1):
SSLv3, TLS handshake, Finished (20):
SSL connection using DHE-RSA-AES256-SHA
* Server certificate:
* 	 subject: /C=US/ST=CA/L=Anaheim/O=Node Source, LLC/CN=*.nodesource.com
* 	 start date: 2015-04-20 00:00:00 GMT
* 	 expire date: 2018-06-13 12:00:00 GMT
* SSL: certificate subject name '*.nodesource.com' does not match target host name 'ci.nodejs.org'
* Closing connection #0
* SSLv3, TLS alert, Client hello (1):
curl: (51) SSL: certificate subject name '*.nodesource.com' does not match target host name 'ci.nodejs.org'

el capitan

 curl -Iv https://ci.nodejs.org
* Rebuilt URL to: https://ci.nodejs.org/
*   Trying 104.131.157.73...
* Connected to ci.nodejs.org (104.131.157.73) port 443 (#0)
* TLS 1.2 connection using TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
* Server certificate: *.nodejs.org
* Server certificate: COMODO RSA Domain Validation Secure Server CA
* Server certificate: COMODO RSA Certification Authority
* Server certificate: AddTrust External CA Root
> HEAD / HTTP/1.1
> Host: ci.nodejs.org
> User-Agent: curl/7.43.0
> Accept: */*
> 
< HTTP/1.1 200 OK
HTTP/1.1 200 OK
< Server: nginx/1.4.6 (Ubuntu)
Server: nginx/1.4.6 (Ubuntu)
< Date: Sun, 01 Nov 2015 23:00:02 GMT
Date: Sun, 01 Nov 2015 23:00:02 GMT
< Content-Type: text/html;charset=UTF-8
Content-Type: text/html;charset=UTF-8
< Content-Length: 145728
Content-Length: 145728
< Connection: keep-alive
Connection: keep-alive
< X-Content-Type-Options: nosniff
X-Content-Type-Options: nosniff
< Cache-Control: no-cache,no-store,must-revalidate
Cache-Control: no-cache,no-store,must-revalidate
< X-Hudson-Theme: default
X-Hudson-Theme: default
< Set-Cookie: JSESSIONID.e76cc007=t7oi3y0p4sg5ou1otb5wga36;Path=/;Secure;HttpOnly
Set-Cookie: JSESSIONID.e76cc007=t7oi3y0p4sg5ou1otb5wga36;Path=/;Secure;HttpOnly
< Expires: Thu, 01 Jan 1970 00:00:00 GMT
Expires: Thu, 01 Jan 1970 00:00:00 GMT
< X-Hudson: 1.395
X-Hudson: 1.395
< X-Jenkins: 1.634
X-Jenkins: 1.634
< X-Jenkins-Session: 76910f3f
X-Jenkins-Session: 76910f3f
< X-Hudson-CLI-Port: 43182
X-Hudson-CLI-Port: 43182
< X-Jenkins-CLI-Port: 43182
X-Jenkins-CLI-Port: 43182
< X-Jenkins-CLI2-Port: 43182
X-Jenkins-CLI2-Port: 43182
< X-Frame-Options: sameorigin
X-Frame-Options: sameorigin
< X-SSH-Endpoint: ci.nodejs.org:49247
X-SSH-Endpoint: ci.nodejs.org:49247
< X-Instance-Identity: MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAi+uB/ROtMmgE7J2F16GBkT+6h84HfBL5+I760pWcUT7iE21Rs7DpBom9mYXpvFImYNhx0MUFPXIsIyhmPAKveNTKopGLrVnm0qQe4w/0v8LOOy0e71FUDZb7Tv26hahOwZkM3/akfBQjF6nSyp0NeNNtiIGkiAfteoHCy7EjskAmB8KR8RInn6HtLK3DMG/VcMc2o5bY8Tns+fxkaBN2jA9ZYUwg0iByT5qtWo/WApBAnDelZn/6MH/hHZ707twQY/fsdRpz0EdzGQHasJZUHeZDTFURAR+E933Yu9TLBBhxEWeg9YOVX22823zBZxzdgnm4kd6nwEM9Up2u6gNEmwIDAQAB
X-Instance-Identity: MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAi+uB/ROtMmgE7J2F16GBkT+6h84HfBL5+I760pWcUT7iE21Rs7DpBom9mYXpvFImYNhx0MUFPXIsIyhmPAKveNTKopGLrVnm0qQe4w/0v8LOOy0e71FUDZb7Tv26hahOwZkM3/akfBQjF6nSyp0NeNNtiIGkiAfteoHCy7EjskAmB8KR8RInn6HtLK3DMG/VcMc2o5bY8Tns+fxkaBN2jA9ZYUwg0iByT5qtWo/WApBAnDelZn/6MH/hHZ707twQY/fsdRpz0EdzGQHasJZUHeZDTFURAR+E933Yu9TLBBhxEWeg9YOVX22823zBZxzdgnm4kd6nwEM9Up2u6gNEmwIDAQAB
< Strict-Transport-Security: max-age=15552000
Strict-Transport-Security: max-age=15552000

< 
* Connection #0 to host ci.nodejs.org left intact