zone name for a reverse lookup zone

[syn uw]

Hello,

I am wondering what name I have to use for my reverse lookup zone name. I 
have the following network address 195.45.43.72/29 and currently as zone 
name I use: 43.45.195.in-addr.arpa, is that correct ? Or should I use 
72.43.45.195.in-addr.arpa ? Or doesn't it have any importance ?

Thanks for the help

Regards,
Marc

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