comScore released its monthly U.S. search engine rankings report for July, which sees Google leading the market at 66.8%, flat from June’s report.

Microsoft sites were slightly up (0.1%) at 15.7%, followed by Yahoo sites (flat) at 13%. The Ask Network managed to climb 0.1% reaching 3% market share, and AOL remained flat at 1.5%.

Still, in July, 25.6% of searches were powered by Bing.

Here’s a look at explicit core searches from June to July:

As you can see, Google, Microsoft, Yahoo and Ask all saw growth in that department.