Continuing the winning run, Google Sites topped the U.S. search engine rankings for the month of July, a new comScore report said.

According to the comScore qSearch analysis of the U.S. search marketplace, Google Sites led the U.S. explicit core search market in July with 65.1 percent market share. Yahoo! Sites came in second with only 16.1 percent and Microsoft Sites were on third with 14.4 percent. Ask Network and AOL, Inc. rounded out the list with 2.9 percent and 1.5 percent respectively.

Out of the five, only Yahoo! Sites and AOL, Inc. saw increase in market share. Compared to June results, Yahoo! Sites' market share was up 0.2 percent, while AOL, Inc.'s was up 0.1 percent. Google Sites' market share was down 0.4 percent from 65.5 percent in June. Shares of both Microsoft Sites and Ask Network remained constant, according to the data released on Wednesday.

In July, over 17.1 billion explicit core searches were conducted, up 3 percent from the earlier month. With 11.2 billion searches (up 2 percent), Google Sites ranked first, while Yahoo! Sites got the second spot with 2.8 billion searches (up 4 percent). Next in the list is Microsoft Sites with 2.5 billion (up 3 percent), followed by Ask Network with 494 million searches (up 4 percent) and AOL, Inc. with 251 million (up 5 percent).

When it comes to total core search, Google Sites once again topped the chart accounting for 64.8 percent of total core search queries conducted (up 0.3 percentage points), followed by Yahoo! Sites with 17.9 percent (up 0.4 percentage points) and Microsoft Sites with 13.4 percent. Ask Network comprised 2.6 percent of total search queries, followed by AOL, Inc. with 1.3 percent.