Statistics released by web monitoring firm comScore show that YouTube served an average of 100 million video streams a day during July.
The site was visited by 63 million people aged 15 and over during the month, with an average of 6.2 million users a day. YouTube was the 17th most visited site worldwide for the month.
YouTube served nearly three billion video streams worldwide in July, representing slightly less than a quarter of the total activity streamed to US locations.
On an average daily basis for the month, 96 million streams were served worldwide and 21 million in the US.
"Several media outlets have reported that YouTube streamed 100 million videos daily in July, and the results of our recent study corroborate this report," said Gian Fulgoni, chairman of comScore Networks.
"In fact, our daily streaming data shows that YouTube first surpassed the 100 million threshold on 17 July, which coincides with YouTube's own announcement that it had reached this impressive mark.
"Our streaming data covering more recent months will be published shortly, and will show that YouTube's streaming total now far surpasses 100 million per day."
Google agreed to acquire YouTube for $1.65bn in stock earlier this week. YouTube will continue to operate independently, and will keep its own headquarters and employees.
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