Regex domain name. The domain name should be a-z or A-Z or 0-9 and hyphen (-).

Regex domain name. Useful if you have to parse through a lot of DNS entries and need something to help you make sense of it. org-). com) Learn how to use regular expressions to effectively retrieve domain names and their TLDs from URLs or text strings. A Regular Expression that matches most domains including subdomains and IDN domain names. -geeksforgeeks. The domain name should be between 1 and 63 characters long. org or geeksforgeeks. Jul 12, 2025 · Given string str, the task is to check whether the given string is a valid domain name or not by using Regular Expression. g. The domain name should not start or end with a hyphen (-) (e. Jul 23, 2013 · Copy Above pattern makes sure domain name matches the following criteria : The domain name should be a-z | A-Z | 0-9 and hyphen (-) The domain name should between 1 and 63 characters long Last Tld must be at least two characters, and a maximum of 6 characters The domain name should not start or end with hyphen (-) (e. You can also easily use this to check if a DNS entry is valid or not if you wanted to. A regular expression to match a valid hostname (also called domain label) in DNS entries. Note, to use this regex, you will need to convert the domain to lower case, and also use an IDN library to ensure you encode domain names to ACE (also known as "ASCII Compatible Encoding"). -google. . NET, Rust. com or google-. The domain name should be a-z or A-Z or 0-9 and hyphen (-). Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. qpxx wfihi vimwpn bqqd xlna vltgk tsgpd bovo ngsqy gyllji