Today, Verisign announced five million domain names were added to the internet in the fourth quarter of 2013, bringing the total number of registered domain names to 271 million worldwide across all top-level domains (TLDs) as of Dec. 31, 2013, according to the latest Domain Name Industry Brief. The increase of five million domain names globally equates to a growth rate of 1.9 percent over the third quarter of 2013. Worldwide registrations have grown by 18.5 million, or 7.3 percent, year over year.