RegistryPro has announced it passed the 100,000 registered base domain name mark after seven years in business. It is not a huge milestone, but unlike other registries, .PRO has strict limits on who may apply for a .PRO domain name.

“On behalf of the entire RegistryPro Team, we’re excited to announce that .PRO has surpassed the 100,000 registered names,” said Lucas Roh, CEO of RegistryPro in a news release. “We’d like to take the opportunity to thank our registrars for their partnerships and our end-users-the businesses, professional organizations, and individuals-who have adopted .PRO in record numbers. We’d also like to welcome those who have not already done so to discover the rich landscape of .PRO and the many high-quality names still available.”

Since launching in 2004, .PRO has evolved into one of the most accessible and valuable names in the lucrative professional services and business segments of the Internet. Any businesses or professionals that have licenses to conduct business or offer professional services can register .PRO names.

According to registry operator data published on ICANN’s website through November, .PRO is one of only six gTLDs to achieve 11 consecutive months of growth in 2010 and ranks sixth among gTLDs with a net increase of over 53,000 names. .PRO also achieved 133% growth through November, which ranks second among all gTLDs though November 2010.

The historic 100,000th .PRO name was registered by Network Solutions on January 25th just one day after RegistryPro welcomed another industry leader, Key-Systems as its newest authorized registrar.