It will show page 2 - the clue is in the information sought by the function.
If you want the page number it starts on then collapse the range to its start before asking the question e.g.
Code:
Dim iStart As Integer, iEnd As Integer
With Selection.Paragraphs(1).Range
iEnd = .Information(wdActiveEndPageNumber)
.Collapse 1
iStart = .Information(wdActiveEndPageNumber)
MsgBox "Starts on page " & iStart & vbCr & "Ends on page " & iEnd
End With