How do I change name servers for cloudflare?

please help.
I cant find the registrar link (that works)
the ones that show up on whois come up with these errors

{"is_success": false, "response_code": 400, "response_text": "[Errno -2] Name or service not known", "exception_type": "gaierror"}

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[alemoppo]

Can you explain the problem? Why do you want to change the nameserver?

Bye!

@alemoppo Because I want to install Cloudflare and get security for my site / ssl.

[alemoppo]

Ok, in this case, you can activate it in one click from here.

(In AlterBlog account, from Settings -> CloudFlare).

Bye!

[avid3898537]

Devo cambiare i nameserver per installare cloudflare ma non funziona la procedura da lei descritta. Come devo fare?
Grazie in anticipo

[alemoppo]

Purtroppo CloudFlare non è più supportato su AlterVista, non è più possibile abilitarlo, anche autonomamente.

Ciao!