NEW YORK, Nov 11 (Reuters) - The U.S. dollar rallied in a technical rebound off a 15-month low on Wednesday, said one analyst, after failing to break through key support levels.

The dollar was last up 0.1 percent at 89.91 yen JPY= after going as low as 89.29. The euro was little changed against the dollar at $1.4974 EUR= after going as high as $1.5048.

The dollar index .DXY earlier hit a fresh 15-month low at 74.774 but then recovered to trade up 0.14 percent at 75.123 after investor selling failed to push it lower and through further support. (Reporting by Nick Olivari; Editing by James Dalgleish)