As the previous respondents have said, a html table may be a good solution.
However, depending on your desired effect, you might be happy with simply wrapping the text in a <pre> tag pair.

Without <pre> tags:

10.1.64.233 10.1.64.36 99.1.64.255 1 15137 137 1865 145956 0

With <pre> tags:

    10.1.64.233     10.1.64.36    99.1.64.255   1  15137   137  1865    145956         0

(I've only shown the numbers, because your header line has some strange inconsistencies which I think you still need to work out.)