If you are searching for in the sense of the original complete series, here is the definitive list of legal streaming sources:
Such is the power of the show that the universe of Iss Pyaar Ko Kya Naam Doon? did not end with the original series. Over the years, the makers expanded the franchise: iss pyaar ko kya naam doon serial all episodes new
The Forced Marriage and Kidnapping Drama (Episodes 151 – 300) If you are searching for in the sense
Episodes are remastered and available in crisp digital formats, far superior to old television recordings. far superior to old television recordings.