Market Share by Top Websites

1 PerimeterX is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, 51 DNS is clearly lagging behind, losing to PerimeterX in all segments.

Websites Categories

1 PerimeterX has better usage coverage in more websites categories. Including Arts & Entertainment, Games, Adult, Computers Electronics & Technology and 20 other categories.

2 51 DNS hasn't got a lead over PerimeterX in any websites category.


1 PerimeterX is leading in most countries, including United States, Brazil, India, United Kingdom and 50 other countries.

2 51 DNS is leading in China, Hong Kong, Japan, Taiwan and 14 other countries.