Actually the /32 tells you the number of bits of an IP address denotes the network. In your example, it is another method of saying netmask 255.255.255.255.
For example, a class A address:
10.0.0.1 netmask 255.0.0.0 can be also notated as 10.0.0.1/8
(8 bits denote the network or the 10. The rest is the machine address.)
192.168.0.1 netmask 255.255.255.0 is 192.168.0.1/24
This becomes significant when you subnet your IP addresses.
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