Denver Broncos, the NFL franchise, has cancelled hundreds of season tickets after an audit found that many holders were not attending games.

The Broncos, that has accrued 47 consecutive seasons of home sellouts, said it will now make season tickets available to “loyal” fans on its waiting list.

It is believed many of the holders were ticket brokers who had no intention of going to a game but rather sold their entire package on the secondary market.

In its ticket agreement, Broncos season tickets are revocable licenses granted on a yearly basis at the sole discretion of the team.

“After careful review and consideration of our nearly 22,000 season ticket accounts, we are informing a number of season ticket holders that their licenses will not be renewed for the 2017 season based on their tickets not being used by them for any game in 2016,” the Denver Broncos said in a statement.

“These decisions were made to reward our loyal season ticket holders, who have helped us to the longest home sellout streak in the NFL, and the many dedicated Broncos fans on our season ticket waiting list of nearly 75,000 people.”

Denver Broncos are one of the NFL’s most successful franchises, having won the Super Bowl on three occasions, most recently in 2015.

However, after failing to make the playoffs for the first time since 2010 in 2016, the Broncos have ended six years of rises by keeping ticket prices the same ahead of the 2017 season. They will give current season ticket holders the opportunity to upgrade their seat location for the first time in several years. The Broncos are also planning to increase the number of single-game tickets that are made available each year in July – and usually sell out in a matter of minutes.