sha1 migration

I read an article on the weakness of SHA1 and it needs to be migrated to SHA2 and I have a few questions:
- How do I check if my webpage is using SHA1?
- When we talk about SHA1, it is at the server and not the client or browser level. Correct?
- If I don't know if I have SHA1 then the webserver has implemented it. Correct?
- In that case, I have to contact them to request for a migration to SH2. Correct?
- People talked about upgrading to SH2, but why big companies don't do it, for ex. google or godaddy. I checked it at the following site www.shaaaaaaaaaaaaa.com. Should I move away from godaddy?

Thx
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leblancAccountingAsked:
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sentnerConnect With a Mentor Commented:
Godaddy has a support article about this very issue, which is probably your best reference if that's your provider.

https://support.godaddy.com/help/article/4818/information-about-requiring-the-sha-2-hash-function
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sentnerConnect With a Mentor Commented:
And don't forget to go to the instruction page linked in that support article.  Here's the link:

https://support.godaddy.com/help/article/4976/re-keying-your-ssl-certificate?locale=en
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