PostgreSQL User's Guide
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# IP V4 Functions

Table 5-15. PostgresIP V4 Functions

Function | Returns | Description | Example
--- | --- | --- | ---
broadcast(cidr) | text | construct broadcast address as text | broadcast('192.168.1.5/24')
broadcast(inet) | text | construct broadcast address as text | broadcast('192.168.1.5/24')
host(inet) | text | extract host address as text | host('192.168.1.5/24')
masklen(cidr) | int4 | calculate netmask length | masklen('192.168.1.5/24')
masklen(inet) | int4 | calculate netmask length | masklen('192.168.1.5/24')
netmask(inet) | text | construct netmask as text | netmask('192.168.1.5/24')

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