in reply to Re^3: left justify/pad hex value
in thread left justify/pad hex value

Or just

$ echo "10.34.2.252 > 10.34.2.250 > 10.34.2.248" | perl -nle 'print "$_ -> ",unpack "H*", eval' 10.34.2.252 -> 0a2202fc 10.34.2.250 -> 0a2202fa 10.34.2.248 -> 0a2202f8

;-)