Sequence of numbers in a hacker provided script

[Eric Ayers <ericzundel () yahoo com>]

A hacker infiltrated our (Linux) system and left a script behind.  
In the script there is a name and a numeric sequence.  What does 
this numeric sequence mean?

#!/bin/bash
#
# cleaner - by (The hacker's alias) [38.24.8888]
#
# Usage: ./cleaner 'your login name or any string'


I should clarify that I didn't actually find this script on my system,
I found it on a website he was using to host his tools.  The hacker
did install some kind of IRC bomb (mirkforce) to attack a remote site,
so I thought it might somehow be related to IRC.