Find out if an IP is within a range of IPs

Question

How can you tell if an ip, say 62.156.244.13 is within the range of 62.0.0.0 and 62.255.255.255

Answer 1

Don't make it any harder than it has to be.

def check_ip(ip)
  '62.0.0.0' < ip and ip < '62.255.255.255'
end

check_ip '62.156.244.13' #=> true

Edit: Or, if you're using Rails / ActiveSupport:

def check_ip(ip)
  ip.starts_with? '62'
end

check_ip '62.156.244.13' #=> true