ACVSRCE gets its information from the callers POE field, or Port Of Entry. If the POE happens to be an IP address, ACF2 will convert it to a dot decimal format, also known as octets.
An IP address consists of 4 numbers (0-255) in a dot decimal format, also known as octets. To translate this source, break it down to the four values, then convert from hex to decimal, giving the numeric IP address.
C5A81E62 = C5.A8.1E.62 = 126.96.36.199
where x'C5' = decimal 197
x'A8' = decimal 168
x'1E' = decimal 30
x'62' = decimal 98