Bellevue-based InfoSpace said today that it appointed Allen Hsieh as chief financial officer.

Hsieh has served as interim chief financial officer since April, in addition to his role as chief accounting officer, which he held since 2003.

Most recently, Hsieh was vice president of finance at Terabeam, a provider of fiberless optics communications. Before Terabeam, he was a partner at PricewaterhouseCoopers in its accounting and auditing practice.

In January, CFO David Rostov resigned to pursue other opportunities, the company said. Rostov left following the departure of Victor Melfi, chief strategy officer, who left at the end of 2005.

And, as part of the restructuring announced earlier this month in which the company said it would lay off 250 employees following the loss of a major customer, the company said Chief Administrative Officer Edmund Belsheim Jr. will leave Jan. 1 after six years with the company.

He was the last of the company's leadership from the Naveen Jain era. Jain and other executives were accused of deceiving investors by making InfoSpace look more successful than it actually was at the height of the dot-com bubble.

The company will announce third-quarter financial results on Wednesday.