877 toll-free service: Spare numbers still available in the U.S.

The statistic depicts the amount of spare telephone numbers still available for 877 toll-free services in the United States between 1998 and 2009. In 2000, there were 869,382 spare numbers still available for toll-free services in the United States.该统计数据描绘了1998年至2009年期间，美国可用于877免费电话服务的备用电话号码数量。2000年，美国可用于免费电话服务的备用号码共计869,382个。