The format appears to be 4 pairs of letters (one for each IP section) , colon, port number, and white space. The letters in the IP address are:

0 - 2
1 - 3
2 - 8
3 - 9
4 - :
5 - ;
6 - <
7 - =
8 - >
9 - ?
10 - H
11 - I
12 - K
13 - L
14 - M
15 - O

The order I can't verify, but assuming ASCII ordering and significant value first, something like =888H=I= may become

(7*16 + 2).(2*16 + 2).(10*16+7).(11*16+7)

which is

114.34.167.183

We'd have to do some more verification to realy get it...