Regex match subdomain. Regex to match each subdomain of a URL.

Regex match subdomain /^[A-Za-z0-9. Hot Network Questions Why is the chi-square test giving unintuitive results? Formative alternative to midterms for a large class Looking for short story about detectives investigating a murder in the future What is a regular expression which will match a valid domain name without a subdomain? 2468. nz type of domains. – danott. JavaScript regex to check URL with possible wildcard subdomain specifier. Match a Regular Expression - Extract subdomain & domain. Regex to match any domain except two domains. com$ Test String: website. preg_match_all Regular expression tester with syntax highlighting, PHP / PCRE & JS Support, contextual help, cheat sheet, reference, and searchable community patterns. tld, or any number of additional subdomains. – Adam Porad. a literal dot \S{2,}+ two or more non Regular Expression to match subdomains of particular domain, with no path. To match prefix. org maintain the latest list and you can use domainname-parser tools from google code to parse the public suffix list and get the sub domain, domain and TLD easily by using DomainName object: domainName. Regular expression to extract domain name from any domain. A regular expression to extract a domain name or subdomain (with a protocol like HTTPS, HTTP) from a given URL. How to match subdomain with gorilla mux. Does anyone have a regular expression handy that will match any legal DNS hostname or IP address? It's easy to write one that works 95% of the time, but I'm hoping to get something that's well tested to exactly match the latest Wildcard in subdomain for ACL in HAPROXY. How redirect dynamic subdomain to a domain with uri. com doesn't match. Validate domain name PHP. Hot Network Questions Print wrong fractions in PGFplots How many percentages of radicals of the Chinese characters have a meaningful indication? Regular Expression to match subdomains of particular domain, with no path. google. The problem with your regular expression is/are: (. So to modify the groups just remove all of the unescaped parentheses from the regex, then isolate the part of the regex that you want to put in a group and wrap it in parentheses. For example google. TLD. It allows for flexible and precise identification of text patterns. Ask Question Asked 11 years, 2 months ago. What regex can I use to get the domain name from a url in Ruby? 10. Hot Network The leading tilde tells nginx that this is a regular expression. Users can add, edit, rate, and test regular expressions. *)?(youtube. Regular Expression for Domain names. But the * may match zero or more times. etc, this will be excluded. Nginx configure root domain redirect to subdomain. boon. Regular Expression | Catch domain from url with subdomain. Regular Expression to check if the URL is under a particular domain. ; Does not match: Incorrectly formatted names including use of Space, Tab, Unwise, Reserved and Delim characters; Does not match: Non Registered TLDs as of 2017-10-06; Returns: Full domain string including sub domains; Does Not Return: Ports, pages, attributes, protocols or trailing slashes Regex to match each subdomain of a URL. Regex for getting domain and subdomain in C#. \\S{2,}+$' ^ . uk/ ever becomes a valid GTLD, for example if someone registers copuk because that means blog in some language, then [email protected] will now match your filter. RegEx to match any side of Amazon and those subdomains that are not AWS This one is tricky because Firefox still doesn't support negative lookbehind even though Chrome has supported this since 2018. Here are scenarios. 12. RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). Here is an Regex that match any number of subdomains also allowing IDN domains and check the limit of 63 or less characters. Ask Question Asked 10 years, 4 months ago. How do I match the domain names with Regex, short for regular expression, is a powerful tool for pattern matching and searching within strings. Breaking Down the Regular Expression: Now, let’s break down the regular expression used in the function: ^: Asserts the start of the string. com; server_name x. example\. first regex match; Here's the matching & redirect order of the server blocks below: multilevel subdomains ---> to single-level subdomain --> to ssl. regex match subdomain. javascript regex that Yes, you may use * as a wild card for subdomains, as stated in RFC1034 sections 4. '). preg_match_all subdomains under Regular Expression to . com? Building overly complex regular expressions for one-off situations like this is self-defeating. com)|(. Viewed 157k times 42 . any character except newline \w \d \s: word, digit, whitespace It's harder nowadays, with internationalized domain names and several thousand (!) new TLDs. regex101: extract subdomain(if available) or domain from URL Regular Expressions 101 A domain name has the form of domain. Im trying to use inside an preg_replace function in order to find out the subdomain of the current page from the $_SERVER['SERVER_NAME'] variable. So the regex will match following (literally any subdomain that has word press in it). Examples: Regular expression to get the main domain of a URL. I tried many suggestions from stackoverflow: regular-expression-extract-subdomain-domain, getting-parts-of-a-url-regex, how-to-get-domain-name-from-url and etc. - matches exactly one character, then a period. one or more non-space characters @subdomain . Hot Network Questions Do I understand my home's main breaker box? The usage of the construction "to be going to" with the adjective "sure" Make a payment of Numerical Methods: Mathematically, why does this python program give such an inaccurate result for nginx rewrite any sub-domain to specific URL. 4. com abc. – The user with no hat Regular Expression to match subdomains of particular domain, with no path. Character classes. uk for Regular expression search across every label of a fully qualified domain name and select RData. I have nginx running multiple domains under a single server directive as server { listen 80; server_name www. 8. My idea is *. RegEx : Grab domain after sub domain (if there is one) from URL. Toggle navigation RegEx Testing From Dan's Tools regex match subdomain. In Java, how do I extract the domain of a URL? 1. Check that the number of Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. Modified 13 years, 5 months ago. xyz. A URL can be a base URL (without a subdomain, path, or query param). (com|[a-z]+\. Regex that only matches domains name and not subdomains. But it shouldn't match, if the . What is the regular expression to validate domains and subdomains using Regular Expression Pattern? 2. Regex to allow sub domains. I am planning to write regular expression for validating wild card domain matching. The subdomain should have the following criteria and structure-It may or maynot contain www. 1 nginx rewrite exclude subdomains. Yet another email regular expression that matches email addresses at a specific domain. dev subdomain. 0. Modified 11 years, 2 months ago. extract the domain name using regex in javascript. @Noyo - I'll clarify my original meaning then. *. 0 Regular Expressions: Get subdomain and domain Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog Regular expression - extract subdomain when domain is unknown. How do I match the domain names with regex by omitting sub-domains? 3. How to Write a Regular Expression for a URL. ". The easy part is that you can still split the components on ". Notepad++, Posix regex, and a URL (regex to get domain) 0. org (if that is of any relevance) – rvalvik. I'm trying to form a regular expression (javascript/node. 0 Regular expression to match certain subdomains. At least one drawback will be the clever and less tasteful subdomains people choose to use to link to your site. com has a suffix of com. Regular Expression for email subdomain match. )* - matches any character, and then a period. the right regex for a subdomain. Regular expression to match a certain domain and last part of URL. we try to whitelist a domain plus all subdomains, e. \w matches alphanumeric [a-zA-Z0-9] in the . validating regular expressions I found in my search I didn't find a single one that reliably handled multiple levels of subdomains or TLDs. We will break down the structure and components of the regex pattern and explain how it works. Match a single character present in the list below [a-zA-Z] {1} matches the previous token exactly one time (meaningless quantifier) Matching group 1: Fully qualified domain name including subdomain and top level domain. Javascript REGEX for Subdomain (Optional) Hot Network Questions How to force formulas to the left edge (border) in LaTex? The current moment I know is publicsuffix. Regex to return all subdomains from a given domain. This practice also prevents XSS, Using regex to match on domain but exclude subdomains. Regex for url domain. I know also we can compile these first two conditions into one. And it check that the - is not at first or last position. Java Regexp to match domain of url. How to capture a subdomain in regex? 1. Regular Expression for Regular Expression to match subdomains of particular domain, with no path. youtube. 3 with some changes and clarifications in RFC4592. sub(pattern, repl, string, count= 0, flags= 0) Code language: Python (python) In this syntax: pattern is a regular expression that you want to match. Nginx variable for subdomain? 1. en. sandbox. department. 1 Regex for Nginx. What regular expression will match a domain name without a 3rd level? 1. Still cannot resolve 5 & 6 without hitting the browser security warning (firefox and safari do not throw these errors), due to the fact that my wildcard ssl cert is only valid for *. com at the end of Email. com to google. Be aware of the maximum length and validate that the email Redirecting a subdomain with a regular expression in nginx. net, . Ensure that your regex pattern allows for valid subdomain structures. Handling subdomains. , Regex for checking if Subdomain is valid or not. 0 Match a specific subdomain but any domain using regex. com would match: review. com) Which matches nicely: youtube. 923. MySQL Regexp to match domain with or without subdomain. io etc. 22. Thank you in advance, titel Edit note: Sorry chaos and sebnow , I edited my question, what I initially meant, but forgot to write, was that this would work without any subdomain at all - case in A regular expression to extract a domain name or subdomain (with a protocol like HTTPS, HTTP) from a given URL. ^ is anchor to beginning of the string, \. example. Any Regular Expression Library provides a searchable database of regular expressions. com; So far I got: ^https:\/\/(w{0,3})(sub1|sub2)\. Leaving it up to each individual user to build their own shim using custom PHP code, rewrite rules, or what-have-you is a recipe for fragmentation, How about making the whole sub-domain portion optional with zero or multiple match using *. Regex to parse sub domain and domain into separate groups. I need to be able to identify a domain name of any subdomain. Regular Expression to Remove Subdomain from Root Domain in List - Notepad++ or Gvim. com, I would like to get 'google' out of the url, namely, the second last word in this URL string. after Regular Expression - Extract subdomain & domain. The last match from the end of the string should be optional to allow for . Regex to match everything from url but without subdomain. com download. (en\. For instance, only match if the domain name is . If you apply this logic to subdomain. We will break down the structure and components of the regex Use a generic, more thorough, domain-validation regex to check that the domain name is valid. Regex for finding sub-domain in email address. company. What is a non-capturing group in regular expressions? 52. Regex which matches any subdomain. 2 I am trying get a regex to match a url with following rules: https - mandatory; www - optional; subdomain, empty or any of sub1 and sub2; domain - fixed, mandatory. com [email protected] [email protected] See Also: Regular Expression For Email Validation Allow for Subdomains: Some email addresses may include subdomains, such as name@subdomain. Hot Network Questions Book involving a massive alien spaceship under the arctic, horror/thriller The regex will match *. Split the domain name into parts using String. dev I have regex /[a-z]+\. com OR example. Commented Mar 6, 2012 at 19:03. is escaped dot, because dot in regular expressions means anything but newline character. You probably want +. gameserver. Both the last and second last matches will only match 2-3 characters, so that it doesn't confuse it with a second-level domain name. Javascript regex - Match domain and any possible sub-domain. regex match main domain name. Regular Expression to match subdomains of particular domain, with no path. Perhaps an unlikely scenario, but the fix is exceedingly simple and universal: escape data before including it in some sort of syntactical language. Regex to match subdomain? 1. Due to this, you have to tailor your regular expression to the way you're expecting the URL. Need regex to get domain + subdomain. Hot Network Questions I would like to use Java regex to match a domain of a url, for example, for www. 7. In this article In this tutorial, we will explore the regular expression used to match domain names. It's profoundly shortsighted that the CORS spec does not strictly require all servers that implement CORS to provide automatic, built-in support for the OP's exact use-case. Regex to properly match urls with a particular domain and also if there is a subdomain added. org), that's great and it is what I want. Find domain and remove other parts from URL. This solution provides you the power to explore the set This is a friendly place to learn about or get help with regular expressions. Also . com only, so . Redirecting a subdomain with a regular expression in nginx. 6. regex - exclude a subdomain (preg_match) 2. This should satisfy the subdomain requirement from RFC, except total length of 255 octets (for name). The bank of urls contain generic urls that I need to use in order to check if an incoming url matches or not. Regular expression to match certain subdomains. I am looking for Regex, which will match any URL, which starts with "http" or "https" and contains specific domain. Net Framework regular expression syntax. com. Get Regular Expressions Cookbook, 2nd Edition now with the O’Reilly learning platform. org etc. Reference - What does this regex mean? 1. golang regexp. Hot Network Questions Regular Expression to match subdomains of particular domain, with no path. com I think there should have been a wildcard before "sandbox" which is not the case. js) which will extract the sub-domain & domain part from any given URL. Regex to match each subdomain of a URL. nginx Redirect specific subdomain and path. ]{1}[a-z0–9]+)*: Allows for Are you sure you need regular expressions to match this? Easiest way you can accomplish what you want with regular expressions is: ^www\. domain. Hot Network Questions How does this Paypal guest checkout scam work? I am new to writing regular expressions. Viewed 1k times 0 I was hoping you could help me with a regular expression I'm having trouble writing for my subdomain. Click To Copy. Regular Expression in gVim to Remove Duplicate Domains from a List. Regex help - stripping out the domain name. Regular Expression - Extract subdomain & domain. google. In the above, example, we will only match the 1st string as we're stating that the string should start with website and end with . Regex matching first part of domain name. sub. Commented Mar 6, 2013 at 12:02. Regex for excluding URL. Ok, so I'm doing a mod_rewrite, and I'm in a situation to where I need to match any subdomain except for one. Match a specific subdomain but any domain using regex. Using a C# regex to parse a domain name? 1. It can also contain a subdomain, path, or other components. To exclude subdomains like described above you can use GA filter([Exclude] [Hostname] [Matching RegEx]) along with regular expression (xyz. 19. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company How would I make use of a regex to validate that my variable url is on the list, including subdomains? For example, perhaps my url is "subdomain. Correct: *. Example: review. I had to look this up when I found out my string wouldn't work in Firefox, which is my primary browser. 3. Regex for password must contain at least eight characters, at least one number and both lower and This is a friendly place to learn about or get help with regular expressions. com, so if any result shows help. ]+)\. Threat Intelligence Feeds. Regexp match domain and subdomain only from given domain in mysql. Add a comment | nginx rewrite any sub-domain to specific URL. What regular expression will match a domain name without a 3rd level? 6. g. literally \. Get Sub-domain with PHP. Regular expression for valid subdomain in Ruby. tld, or subdomain. It allows for subdomains separated by hyphens. au or . That would not match boon as a sub domain of a sub domain e. If it’s happening online, you’ll know. Regular Expression- Regular Expression to match subdomains of particular domain, with no path. 1. Here's my idea, Match anything that isn't a dot, three times, from the end of the line using the $ anchor. Regex to match URLs starts with subdomain but not "www" 0. dev)/i and i need to modify it to mathc only URLs which start Im trying to do some generic type url matching based on a bank of predefined urls and actual urls I get from another table. This answers also helpfull: Get the subdomain A regular expression, or regex, is a sequence of characters that defines a search pattern. 5118. (. cn substring is not at the end of the domain. Javascript/Regex for finding just the root domain name without sub domains. goodguy. Regex to match pattern with subdomain in java gives issues. com; server_n Parentheses in regular expressions define groups, which is why you need to escape the parentheses to match the literal characters. com and prefix. 31. What could be the way to adjust this solution for my case? regex; Share. Quick question - I'm trying to setup a rule in a CheckPoint firewall appliance. should not be matched) and then add them to a list by looping through all matches. . Regular expression: ^website. xsandbox. com OR test. user. reg expression: get subdomain if existent. Viewed 18k times 8 . To get from subdomain. Nginx redirect domain to subdomain url with persist url. Regex that can extract all subdomains + domain from an URL and is compatible with RFC 3490. golang regex to find urls in a string. Regular expressions are powerful tools for pattern matching and validation. O’Reilly members experience You can't do this with a regular expression because you don't know how many blocks are in the suffix. Modified 1 year, 3 months ago. Redirect 301 from subdomain to domain specific url with Regular Expression to match subdomains of particular domain, with no path. Checking full domain from string in C#. com$ Can't make it work to allow empty subdomain, i tried (^$|sub1|sub2) in subdomain capturing group, but doesn't work. htaccess redirect from one domain to another including subdomains. com login. com you'd have to take the last two blocks - one for the suffix and one for google. How to write regex to match pages and subdomains of one URL only? 1. Regular expression validation contain . If you have a fixed string, then no need to introduce semantic complexity by checking for patterns. regular expression for validating url with sub-domain. Structure of a Subdomain. Need a javascript regex to match a specific path. sub. 20. Regex match domain that contain certain subdomain. \. (read: don't try this on IPv6 addresses) Share. Redirecting domain to subdomain with htaccess. Extract subdomain from url using regex. com shouldn't match any route because I've defined only prefix. com Regular Expression to match subdomains of particular domain, with no path. You want a + after the first . Regex redirect of wordpress blog from subdomain to domain. Hot Network Questions The sub() is a function in the built-in re module that handles regular expressions. com This actually works, but w. Regex match domain name without www and keep website. Regex help: subdomain check. Hot Network Questions The longest distance travelled by an ant on the sides of a cube. gamese Regular Expression to match subdomains of particular domain, with no path. It starts out looking like this. com$ [NC] So that matches and captures a single subdomain, no periods. Comparing a given subdomain with regex. com$/g. Hot Network Questions environment variable with su - and systemd-run su - Why is the United Kingdom often considered a country, but the European Union isn't? Regex to match pattern with subdomain in java gives issues. org (e. 47. 0 nginX matching path after host. The pattern the questioner provided won't match on a dash character, which is a valid character for a host name. Regex Feature name: Subdomains only URI matching Feature Description I’m proposing a URI matcher which matches a domain and its subdomains. Ask Question Asked 8 years, 8 months ago. [a-z]{2,63}: This matches the top-level I want to have a regular Expression for Google Analytic so I can match all the domain including the sub domains. With this pattern, we can capture various HTTP URLs, including What I want, is all subdomains except www. Hot Network Questions Is there a printer for post it notes? I once had to write such a regex for a company I worked for. 2 and 4. case. Validating email address regular expression with fixed domain. Regex match the Domain name. Toggle navigation RegEx Testing From Dan's Tools. MatchString handle url match. The solution was this: Get a list of every ccTLD and gTLD available. google\. So basically this regex tells you, match me www which is right on the beginning of This regular expression does not support collapsing consecutive 0-segments into a '::' in IPv6 addresses. com" I should be able to extract all domain and subdomain matches from a string (the . Your first stop should be IANA. Consider Length Limitations: Email addresses have a maximum length limit defined by the email service provider. website. In this tutorial, we will explore the regular expression used to match domain names. What can I do when a regular expression pattern doesn't match anywhere in a string? 3. redirect subdomain to directory for any domain. Note that if something matching /co. How to write regex to match pages and subdomains of one URL only? 0. Domain and domainName. This RegEx including both main domain and it's subdomains. Extracting top-level and second-level domain from a URL using regex. Modified 7 years, 7 months ago. +) to match one or more characters. 1 nginx rewrite rule for wildcard domain with same subdomain. The basic format of my domain will be something like this: I'm trying to form a regular expression for REGEXP_SUBSTR (Redshift) which will extract the sub-domain & domain part from any given URL. Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. 2. . Besides a regular expression, the pattern can be Pattern object. NET, Rust. [\-\. How to use regexp get url pattern in golang? 2. Use a regular expression to find potential matches or check if the input uses the proper syntax, and do the actual validation Matching subdomain and top domain using regex in Java. Regular expression - extract subdomain when domain is unknown. Regular Expression Help Needed to Parse Domain Name. Domain name regular expression. |)example\. table. com goes to www. co. You might have better luck building a very generic regular expression and black listing certain domains: Regular Expression for Subdomain. How to write regex to match pages and subdomains of one URL only? 47. But let's say I don't want to match the submdomain named 'dog'. I need a regex that find all URLs that not starts with www, so the result set should be: subdomain. Actually, if the subdomain contains the character "w" it fails. uk though you would end but it doesn't proceed protocol, subdomain and domain, I guess this is the cause, why it doesn't work for me. or a optionally a subdomain; then it must be followed by Subdomain; then it will be followed by top level domain(TLD) like . Matches: [email protected] [email protected] [email protected] Non-matches: @yourdomain. 100. com test. Also, Why use indexOf instead of Regular Expression. Match all email addresses belonging to a specific domain and its subdomains. _%+-]+@yourdomain\. com? I will be given a url, and need to match via a Regular Expression only if the URL ends in a certain top level domain. com itself via regexp (PCRE), so far I have (?:. RewriteCond %{HTTP_HOST} ^([^\. regex needed to strip out domain name. A tetrahedron for 2025 Happy 2025! This math equation is finally true. start of string \S+ . Regex to match specific domain format. com OR *. The list from Mozilla looks great at first sight, but lacks ac. Regexp for subdomain. Related. com www. api. test. To allow for subdomains in the domain part of an email address, the regex pattern should include a group that Regular Expression to Remove Subdomain from Root Domain in List - Notepad++ or Gvim. Regex to match all subdomains of a matched domains. gov tlds. Please read & understand the rules before creating a post. split('. You see, what you have here for matching is a simple string (example. The sub() function has the following syntax: re. org), but will leaves out sub-subdomain (e. If the domain is "stackoverflow. Reference Guide: What does this symbol mean in PHP? (PHP Syntax) concerning the previous comment prefix. com still intact. com" That is, to say clearly: How would I utilize a regex to verify that my url is *. com help. regex to match only . Golang match domain names wild card. cn. Regex to match both domain and subdomain. So, I wrote one and thoroughly tested it. But I have other requirement, I want to match subdomain that contain specific string, in this case press. All of the above regexes match this email address, because I included a dot in the character class after the @ symbol. Ask Question Asked 14 years, 8 months ago. Regular expressions are best suited for deciding if patterns are matched. 14. 3. *. com & youtube. Regex that Javascript regex - Match domain and any possible sub-domain. com). 47 Regexp for subdomain. 1 Regex to match any domain except two domains. com Incorre subdomain can be any word. )+ #End of group #1, this group must appear at least 1 time, but allowed multiple times for subdomain [A-Za-z]{2,6} #TLD is [A-Za-z], between 2 and 6 long $ #end of the line Note This regular expression pattern should be How would I make use of a regex to validate that my variable url is on the list, including subdomains? For example, perhaps my url is "subdomain. It accepts a URL (which I can't find if it supports using an asterisk for a subdomain wildcard), but it also supports Regex. For instance: Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. These subdomains can be used to host different sections or pages of a website, or to host completely separate websites with their own content and functionality. This is what I ended up with: Find out subdomain using Regular Expression in PHP. com, . Regex to match Sub-domain of a Domain. Since I'm not a Regular Expression junkie just yet, I need your help Thanks for any help you can give here. Email addresses can be on servers on a subdomain as in john@server. Hot Network Questions What would a planet need to have a sustained blood-based water cycle? Regular Expression - Extract subdomain & domain. $ - matches exactly one character, then an end of line. SubDomain, domainName. com subdomain. Regex get domain name from email. 5. SELECT '[email protected]' ~ E'^\\S+@subdomain\\. com) not a pattern. This simple regular expression does not guarantee valid email-addresses, but it eliminates much of the nonsense reliably: If the expression yields FALSE, the address is actually invalid:. Subdomain constraint and excluding I am try to whitelist this domain and sub-domain(not sure if i am using the correct term) using Regex, am i doing it right? example of domain & sub-domains: https://gameserver. but This regex should extract the subdomain, if any, or the domain, if no subdomain is used, from an arbitrary URL A Regular Expression that matches most domains including subdomains and IDN domain names. Javascript regex to match fully qualified domain name, without protocol, optional subdomain. Trying to match the following in haproxy: Match URL pattern in PHP using a regular expression. Regular Expression to This regex will match the elements of a URL, including the protocol, subdomain, domain, path, filename, query parameters, and anchor. htaccess for subdomains. ecwlxq stsm vufx xcnvco pwnai sxi aogvg iludbhd ayri rtzyni