.top is a generic top-level domain, officially delegated in ICANN's new gTLD program on August 4, 2014.

The domain name extension .top is managed and operated by the .top registry (registry backend ZDNS) which belongs to Jiangsu Bangning Science & Technology Co., Ltd. in Nanjing, China, and can be registered by anyone since November 18, 2014 without special requirements.

A second level domain under the top-level domain (TLD) .top can consist of digits, letters, hyphens and specific special characters while it can have a length of one up to (a maximum) of 63 characters.

The private registration (WHOIS privacy) of .top domains is supported, as is the ability to register internationalized domain names (IDNs), which include the character sets Arabic, Chinese (simplified and traditional), French, German, Japanese, Russian, and Spanish.

[2] As of 2023, .top domains are often used for malware and phishing,[6][7] and the TLD is included in the list of those banned for some antimalware vendors such as Malwarebytes.