Sub domain redirect

I have moved webhost and a need to temporally redirect a sub domain on my old host the the IP address of my new host while the DNS information updates

I need all traffic from http://sub.domain.co.uk to forward to x.x.x.x

Can this be done by changing the .htaccess file on with my old host?

If so i would appreciate some help with the correct syntax to do this.

Many thanks in advance

 

 

 

 

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