Most worsened: AS 10297 COLUMBUSNAP
,
from #91 to
#6 worldwide in January 2013.
Most
improved: AS 48347 MTW-AS 
, from #8 to less than 250. Surprise entrant:
AS
8685 DORUKNET 
.
Still #1 for fourth month: AS 16276 OVH 
.
-jsq
Most worsened: AS 10297 COLUMBUSNAP
,
from #91 to
#6 worldwide in January 2013.
Most
improved: AS 48347 MTW-AS , from #8 to less than 250. Surprise entrant:
AS
8685 DORUKNET .
Still #1 for fourth month: AS 16276 OVH .
-jsq