MySQL User with Host set to a Range of IP Addresses

I have a hosted MySQL DB that I need to give access to from my customers site. They have a fast broadband connection which can present them with a range of IP addresses from a fixed pool.

So I need to lock down the access to their MySQL user so that the Host setting is a range of addresses within a class. Not the whole class.

I realise I can use a wildcard such as 81.91.71.% but that is too generous. Their range is more like

81.10.20.1 --> 81.10.20.15

Is there a way to do this other than create 15 users, one for each individual IP address?
thanks
Mark

you can use the grant assign to a netmask like:

GRANT ALL PRIVILEGES ON database.* TO 'user'@'81.10.20.1/255.255.255.240';

It will give you access from 81.10.20.1 -> 81.10.20.14, just change the subnet part to fit the range you need.

You can see more info at mysql doc account names

StackExchange Database Administrators Q#48992, answer score: 21