1. The Early 1990s: This era saw the rise of New Kids on the Block, which sparked the whole boy band phenomenon. Other prominent groups included:
* Backstreet Boys
* NSYNC
2. The Late 1990s to Early 2000s: This period saw the boy band genre reach its zenith, with massive popularity and commercial success:
* Backstreet Boys
* NSYNC
* 98 Degrees
* O-Town
* *NSYNC
3. The Mid-2000s to Early 2010s: This period saw a resurgence in the boy band scene, although less widespread than the previous era:
* One Direction
* The Wanted
* Big Time Rush
The most commonly accepted "golden age" is likely late 1990s to early 2000s**, as this was the period with the most commercially successful and impactful boy bands.