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Register Dot Com is leading in The Entire Web.
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UltraDns is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
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Register Dot Com has better usage coverage in more websites categories. Including Science & Education, Food & Drink, Arts & Entertainment, Health and 11 other categories.
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UltraDns is leading in Finance, Computers Electronics & Technology, Business & Consumer Services, Vehicles and 5 other categories.
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Register Dot Com is leading in most countries, including United States, United Kingdom, Canada, Australia and 138 other countries.
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UltraDns is leading in China, Brazil, Russia, Kazakhstan and 4 other countries.