There are a couple like college network and excelsior (sp??) but I havent heard the best things about the online LPN to RN. Make sure you research if you are considering this, I know a lot of nurses who have gotten upside down with payments but no degree with this.
Also check that the school is accepted in the state in which you wish to practice. Neither ISU nor Excelsior College programs are accepted by the board of nursing in each of the US states. For example NY does not accept ISU and MD doesn't accept Excelsior.