How to restrict access by IP and set up redirection to another site for all but the selected IPs?

Question

PHP

access to the site to everyone except the selected IP addresses through htaccess?
all but the selected IP addresses need to be redirected to a new domain
, we are working on a prototype, there is a working site.
Recently, the system sent letters, many go to the prototype instead of the working site.

Answer 1

order deny,allow 
deny from all 
allow from *.*.*.*

ErrorDocument 403 http://newsite.ru/

instead of *.*.*.* - sp.
Not tested, test