Web.com of Jacksonville, Florida will pay Network Solutions US$405 million in cash and issue 18 million shares of Web.com common stock, in addition to refinancing existing debt of Network Solutions.

Both Web.com and Network Solutions are domain name registrars but they have other complementary businesses in web services, online marketing, and e-commerce, targeted at small and medium businesses. Web.com, for example, also sets up pages on Facebook for customers.

Even as the Internet has been a game-changing resource for consumers and large companies with the scale to tap enterprise marketing resources, there are many small business owners who could more fully leverage the growing adoption of online local search, social media and mobile devices to grow their businesses, Web.com .

The two companies had about 3 million paying subscribers, over 9 million domains under management, and more than 1,900 employees, at the end of June. The combined entity will compete with the likes of GoDaddy.com which claims that it currently manages over 48 million domain names for more than 9 million customers worldwide.

Web.com acquired last year Register.com, a privately-held provider of domain name registration, website design and management services, with over 800,000 subscribers, also with an eye on small businesses.