Namecheap logo on radar background. Namecheap, one of the providers around today, and the second largest domain registrar, has revealed extensive new findings on the biggest TLDs of 2025. The company's 2025 Domain Insights and Trends report examines more than 22 million domains, and perhaps unsurprisingly found the .com TLD was the most popular with 4.6 million domain names registered between 1 January and 31 December 2025.