Regular expression for URL

Question

I have written regex to validate URL which could be either like

example.com
www.example.com
http://www.example.com
https://www.example.com

All 4 are working

Now, if I am entering in a text like (www.example.com--thisisincorrect), it is allowing me to enter and save into db

The regex that I have used is:

http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?

and

([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?

Please help!

Is that "^http(s)?://([\w-]+.)+[\w-]+(/[\w- ./?%&=])?$ " work for you? — PrateekSaluja, Feb 15 '12 at 06:22

score 92 · Answer 1 · answered Apr 19 '11 at 13:45

92

You don't need a regex for URLs, use System.Uri class for this. E.g. by using Uri.IsWellFormedUriString method for this:

bool isUri = Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute);

answered Apr 19 '11 at 13:45

Oleks

31,955
11
77
132

1

Are you sure this works? Check this, bool isValid = Uri.IsWellFormedUriString("ktp://yahoo.co.in/index.ez",UriKind.RelativeOrAbsolute); and it returns true. Does a scheme called ktp:// exist? – Chaitanya Aug 22 '11 at 23:15
10

@Chaitanya: according to RFC 2396, section 3.1, `ktp` is a perfectly **valid** scheme name. E.g. a custom protocol could define this scheme. – Oleks Aug 25 '11 at 12:49
1

In many cases you DO need a regex for validation of strings. You can't pass a function into a FluentValidation rule, for example. – Nathan C. Tresch Apr 24 '14 at 23:24
A regex still seems to be needed when the URI needs to be processed by software that follows an older syntax specification and thus, for example, restricts the use of hyphens in the domain name. – O. R. Mapper May 16 '14 at 14:09
2

Seems this considers just about anything valid. Uri.IsWellFormedUriString("anything", UriKind.RelativeOrAbsolute) true – Allen Tellez Jan 03 '18 at 19:09
2

@AllenTellez, the expression you are testing against is a *valid* relative URI. If you want to check against an absolute URI, use `UriKind.Absolute` instead. – Oleks Jan 04 '18 at 15:48
@mrid: `dewdwe` is a valid host name. This doesn't mean that it exists though. See RFC 2396, section 3.2.2 for details. – Oleks Feb 19 '19 at 10:38
Both `bool isUri = Uri.IsWellFormedUriString("bob", UriKind.RelativeOrAbsolute);` and `bool isUri = Uri.IsWellFormedUriString("bob", UriKind.Absolute);` return true... and "bob" isn't a valid uri. – PKD Jun 17 '22 at 00:14
@PKD, no the latter returns `false`. It also depends on which version of .NET you are using. See: https://learn.microsoft.com/en-us/dotnet/api/system.uri.iswellformeduristring?view=net-6.0 – Oleks Jun 20 '22 at 10:28
.Net 5, and it returns true. I set up unit tests for both Relative and Absolute, and both return true. I promise I'm not lying. – PKD Jun 27 '22 at 17:10
@PKD .NET 6, `true`, `false` – Oleks Jun 28 '22 at 10:31
@Oleks - That doesn't really help if you aren't in a position to upgrade your program's code language. And having something that returns different outcomes depending on the language version seems pretty unreliable. – PKD Jun 28 '22 at 22:49
@PKD you, probably, referred to a framework and not the language version. If you read the link I provided you above, you might notice that there was a change starting from .NET 4.5. I'm not aware of any other changes. But the rules for validation of a URI are quite complex to implement by yourself. Also FYI .NET 5 you're referring to has reached the end of its support. – Oleks Jun 29 '22 at 11:16

score 35 · Accepted Answer · answered Apr 19 '11 at 13:45

35

Add ^ and $

^http(s)?://([\w-]+.)+[\w-]+(/[\w- ./?%&=])?$

This matches beginning of the string (^) and end ($)

answered Apr 19 '11 at 13:45

Gary Green

22,045
6
49
75

1

Thanks It works but can you check "([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)? " this reg ex is not working for a)google.com b)www.google.com – PrateekSaluja Feb 15 '12 at 06:28
1

This doesn't work with trailing /. add '/' at the last of the url. – Rohit Arora Mar 29 '16 at 06:35
Has missing star `*` after final closing square bracket `]` -- as is will only allow one character after the final `/` Fixed here: `^https?://(?:[\w-]+.)+[\w-]+(?:/[\w- ./?%&=]*)?$` added `?:` to enable non-capturing in groups – GreatAndPowerfulOz Jul 06 '23 at 10:55

score 22 · Answer 3 · answered Dec 18 '13 at 06:40

22

Best Regex:

private bool IsUrlValid(string url)
{

    string pattern = @"^(http|https|ftp|)\://|[a-zA-Z0-9\-\.]+\.[a-zA-Z](:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&amp;%\$#\=~])*[^\.\,\)\(\s]$";
    Regex reg = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
    return reg.IsMatch(url);
}

answered Dec 18 '13 at 06:40

user1335958

374
3
5

2

Try `(http|https|ftp|)\:\/\/[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*(:(0-9)*)*(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&%\$#_]*)?([a-zA-Z0-9\-\?\,\'\/\+&%\$#_]+)` instead. – Grzegorz Smulko Mar 13 '19 at 13:04

score 13 · Answer 4 · answered May 14 '19 at 10:38

13

Try that:

bool IsValidURL(string URL)
{
    string Pattern = @"^(?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~:/?#[\]@!\$&'\(\)\*\+,;=.]+$";
    Regex Rgx = new Regex(Pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
    return Rgx.IsMatch(URL);
}

It will accept URL like that:

http(s)://www.example.com
http(s)://stackoverflow.example.com
http(s)://www.example.com/page
http(s)://www.example.com/page?id=1&product=2
http(s)://www.example.com/page#start
http(s)://www.example.com:8080
http(s)://127.0.0.1
127.0.0.1
www.example.com
example.com

answered May 14 '19 at 10:38

Marco Concas

1,665
20
25

this will not work for www.google ( this is not true ) but with your code it return true. – Jan 20 '21 at 15:06
@csharp_devloper31 This is a mandatory limitation as in the near future ".google" could become a top level domain, so the function I wrote is valid. – Marco Concas Jan 21 '21 at 17:46
1

It's good, but it does not accept the new special charaters, like in "schüpp.ch", which is an actual website. – Marcel Jul 13 '21 at 10:06

Bruce · Answer 5 · 2011-04-19T13:53:05.370

when creating a regex for strict matching, you must make it sure it begins with '^' and finishes with '$'. Otherwise, the regex will see if it finds a substring which matches.

'^' means match begin of line
'$' means match end of line.

However, using a regex to match an URL is error prone : better rely on existing frameworks doing it better (there are a lot of potential traps in url, like parameters, unkown domains, url containing ip instead of domain....)

sach4all · Answer 6 · 2017-03-24T14:57:34.210

1

You are Looking for this

Without Http:

@"^(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk)(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\;\?\'\\\+&amp;%\$#\=~_\-]+))*$"

With Http(s):

@"^(((ht|f)tp(s?))\://)?(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk)(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\;\?\'\\\+&amp;%\$#\=~_\-]+))*$"

or

@"^[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(/\S*)?$";

edited Mar 24 '17 at 14:57

answered Mar 18 '17 at 06:05

sach4all

51
4

thats cool. but there is a problem; if you want to use this regex with extension (.tr, .en, .cn), you will get false. – Atakan Savaş Nov 06 '18 at 10:35
@AtakanSavaş because you should to add your desidered extension in this part: `(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk|tr|en|cn)` – Marco Concas May 14 '19 at 10:20
1

@MarcoConcas I fixed this as you say. Thank you. – Atakan Savaş May 22 '19 at 19:35

score 1 · Answer 7 · answered Jun 03 '19 at 11:13

1

I made one that finds links - works me excellently:

(\b(http|ftp|https):(\/\/|\\\\)[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?|\bwww\.[^\s])

answered Jun 03 '19 at 11:13

Yinon_90

1,315
12
17

score 0 · Answer 8 · answered May 03 '18 at 14:26

This works for me:

string pattern = @"^(ht|f)tp(s?)\:\/\/[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*(:(0-9)*)*(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&%\$#_]*)?$";

Regex regex = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);

string url= txtAddressBar.Text.Trim();

if(regex.IsMatch(url)
{
  //do something
}

score 0 · Answer 9 · answered Aug 28 '18 at 18:04

This is to support both http, https as optional and validate blank space is not included in url.

this.isValidURL = function (url) {

    if (!url) return false;

    const expression = /^(?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~:/?#[\]@!\$&'\(\)\*\+,;=.]+$/gm;

    return url.match(new RegExp(expression));
}

score -2 · Answer 10 · answered Jan 01 '19 at 14:08

I would like to share with you advanced version of @sach4all regexp query that check all links if they have correct superdomain in case that some links only fake a correct URL address.

@"(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.(AAA|AARP|ABARTH|ABB|ABBOTT|ABBVIE|ABC|ABLE|ABOGADO|ABUDHABI|AC|ACADEMY|ACCENTURE|ACCOUNTANT|ACCOUNTANTS|ACO|ACTIVE|ACTOR|AD|ADAC|ADS|ADULT|AE|AEG|AERO|AETNA|AF|AFAMILYCOMPANY|AFL|AFRICA|AG|AGAKHAN|AGENCY|AI|AIG|AIGO|AIRBUS|AIRFORCE|AIRTEL|AKDN|AL|ALFAROMEO|ALIBABA|ALIPAY|ALLFINANZ|ALLSTATE|ALLY|ALSACE|ALSTOM|AM|AMERICANEXPRESS|AMERICANFAMILY|AMEX|AMFAM|AMICA|AMSTERDAM|ANALYTICS|ANDROID|ANQUAN|ANZ|AO|AOL|APARTMENTS|APP|APPLE|AQ|AQUARELLE|AR|ARAB|ARAMCO|ARCHI|ARMY|ARPA|ART|ARTE|AS|ASDA|ASIA|ASSOCIATES|AT|ATHLETA|ATTORNEY|AU|AUCTION|AUDI|AUDIBLE|AUDIO|AUSPOST|AUTHOR|AUTO|AUTOS|AVIANCA|AW|AWS|AX|AXA|AZ|AZURE|BA|BABY|BAIDU|BANAMEX|BANANAREPUBLIC|BAND|BANK|BAR|BARCELONA|BARCLAYCARD|BARCLAYS|BAREFOOT|BARGAINS|BASEBALL|BASKETBALL|BAUHAUS|BAYERN|BB|BBC|BBT|BBVA|BCG|BCN|BD|BE|BEATS|BEAUTY|BEER|BENTLEY|BERLIN|BEST|BESTBUY|BET|BF|BG|BH|BHARTI|BI|BIBLE|BID|BIKE|BING|BINGO|BIO|BIZ|BJ|BLACK|BLACKFRIDAY|BLANCO|BLOCKBUSTER|BLOG|BLOOMBERG|BLUE|BM|BMS|BMW|BN|BNL|BNPPARIBAS|BO|BOATS|BOEHRINGER|BOFA|BOM|BOND|BOO|BOOK|BOOKING|BOSCH|BOSTIK|BOSTON|BOT|BOUTIQUE|BOX|BR|BRADESCO|BRIDGESTONE|BROADWAY|BROKER|BROTHER|BRUSSELS|BS|BT|BUDAPEST|BUGATTI|BUILD|BUILDERS|BUSINESS|BUY|BUZZ|BV|BW|BY|BZ|BZH|CA|CAB|CAFE|CAL|CALL|CALVINKLEIN|CAM|CAMERA|CAMP|CANCERRESEARCH|CANON|CAPETOWN|CAPITAL|CAPITALONE|CAR|CARAVAN|CARDS|CARE|CAREER|CAREERS|CARS|CARTIER|CASA|CASE|CASEIH|CASH|CASINO|CAT|CATERING|CATHOLIC|CBA|CBN|CBRE|CBS|CC|CD|CEB|CENTER|CEO|CERN|CF|CFA|CFD|CG|CH|CHANEL|CHANNEL|CHARITY|CHASE|CHAT|CHEAP|CHINTAI|CHRISTMAS|CHROME|CHRYSLER|CHURCH|CI|CIPRIANI|CIRCLE|CISCO|CITADEL|CITI|CITIC|CITY|CITYEATS|CK|CL|CLAIMS|CLEANING|CLICK|CLINIC|CLINIQUE|CLOTHING|CLOUD|CLUB|CLUBMED|CM|CN|CO|COACH|CODES|COFFEE|COLLEGE|COLOGNE|COM|COMCAST|COMMBANK|COMMUNITY|COMPANY|COMPARE|COMPUTER|COMSEC|CONDOS|CONSTRUCTION|CONSULTING|CONTACT|CONTRACTORS|COOKING|COOKINGCHANNEL|COOL|COOP|CORSICA|COUNTRY|COUPON|COUPONS|COURSES|CR|CREDIT|CREDITCARD|CREDITUNION|CRICKET|CROWN|CRS|CRUISE|CRUISES|CSC|CU|CUISINELLA|CV|CW|CX|CY|CYMRU|CYOU|CZ|DABUR|DAD|DANCE|DATA|DATE|DATING|DATSUN|DAY|DCLK|DDS|DE|DEAL|DEALER|DEALS|DEGREE|DELIVERY|DELL|DELOITTE|DELTA|DEMOCRAT|DENTAL|DENTIST|DESI|DESIGN|DEV|DHL|DIAMONDS|DIET|DIGITAL|DIRECT|DIRECTORY|DISCOUNT|DISCOVER|DISH|DIY|DJ|DK|DM|DNP|DO|DOCS|DOCTOR|DODGE|DOG|DOHA|DOMAINS|DOT|DOWNLOAD|DRIVE|DTV|DUBAI|DUCK|DUNLOP|DUNS|DUPONT|DURBAN|DVAG|DVR|DZ|EARTH|EAT|EC|ECO|EDEKA|EDU|EDUCATION|EE|EG|EMAIL|EMERCK|ENERGY|ENGINEER|ENGINEERING|ENTERPRISES|EPOST|EPSON|EQUIPMENT|ER|ERICSSON|ERNI|ES|ESQ|ESTATE|ESURANCE|ET|ETISALAT|EU|EUROVISION|EUS|EVENTS|EVERBANK|EXCHANGE|EXPERT|EXPOSED|EXPRESS|EXTRASPACE|FAGE|FAIL|FAIRWINDS|FAITH|FAMILY|FAN|FANS|FARM|FARMERS|FASHION|FAST|FEDEX|FEEDBACK|FERRARI|FERRERO|FI|FIAT|FIDELITY|FIDO|FILM|FINAL|FINANCE|FINANCIAL|FIRE|FIRESTONE|FIRMDALE|FISH|FISHING|FIT|FITNESS|FJ|FK|FLICKR|FLIGHTS|FLIR|FLORIST|FLOWERS|FLY|FM|FO|FOO|FOOD|FOODNETWORK|FOOTBALL|FORD|FOREX|FORSALE|FORUM|FOUNDATION|FOX|FR|FREE|FRESENIUS|FRL|FROGANS|FRONTDOOR|FRONTIER|FTR|FUJITSU|FUJIXEROX|FUN|FUND|FURNITURE|FUTBOL|FYI|GA|GAL|GALLERY|GALLO|GALLUP|GAME|GAMES|GAP|GARDEN|GB|GBIZ|GD|GDN|GE|GEA|GENT|GENTING|GEORGE|GF|GG|GGEE|GH|GI|GIFT|GIFTS|GIVES|GIVING|GL|GLADE|GLASS|GLE|GLOBAL|GLOBO|GM|GMAIL|GMBH|GMO|GMX|GN|GODADDY|GOLD|GOLDPOINT|GOLF|GOO|GOODYEAR|GOOG|GOOGLE|GOP|GOT|GOV|GP|GQ|GR|GRAINGER|GRAPHICS|GRATIS|GREEN|GRIPE|GROCERY|GROUP|GS|GT|GU|GUARDIAN|GUCCI|GUGE|GUIDE|GUITARS|GURU|GW|GY|HAIR|HAMBURG|HANGOUT|HAUS|HBO|HDFC|HDFCBANK|HEALTH|HEALTHCARE|HELP|HELSINKI|HERE|HERMES|HGTV|HIPHOP|HISAMITSU|HITACHI|HIV|HK|HKT|HM|HN|HOCKEY|HOLDINGS|HOLIDAY|HOMEDEPOT|HOMEGOODS|HOMES|HOMESENSE|HONDA|HONEYWELL|HORSE|HOSPITAL|HOST|HOSTING|HOT|HOTELES|HOTELS|HOTMAIL|HOUSE|HOW|HR|HSBC|HT|HU|HUGHES|HYATT|HYUNDAI|IBM|ICBC|ICE|ICU|ID|IE|IEEE|IFM|IKANO|IL|IM|IMAMAT|IMDB|IMMO|IMMOBILIEN|IN|INC|INDUSTRIES|INFINITI|INFO|ING|INK|INSTITUTE|INSURANCE|INSURE|INT|INTEL|INTERNATIONAL|INTUIT|INVESTMENTS|IO|IPIRANGA|IQ|IR|IRISH|IS|ISELECT|ISMAILI|IST|ISTANBUL|IT|ITAU|ITV|IVECO|JAGUAR|JAVA|JCB|JCP|JE|JEEP|JETZT|JEWELRY|JIO|JLL|JM|JMP|JNJ|JO|JOBS|JOBURG|JOT|JOY|JP|JPMORGAN|JPRS|JUEGOS|JUNIPER|KAUFEN|KDDI|KE|KERRYHOTELS|KERRYLOGISTICS|KERRYPROPERTIES|KFH|KG|KH|KI|KIA|KIM|KINDER|KINDLE|KITCHEN|KIWI|KM|KN|KOELN|KOMATSU|KOSHER|KP|KPMG|KPN|KR|KRD|KRED|KUOKGROUP|KW|KY|KYOTO|KZ|LA|LACAIXA|LADBROKES|LAMBORGHINI|LAMER|LANCASTER|LANCIA|LANCOME|LAND|LANDROVER|LANXESS|LASALLE|LAT|LATINO|LATROBE|LAW|LAWYER|LB|LC|LDS|LEASE|LECLERC|LEFRAK|LEGAL|LEGO|LEXUS|LGBT|LI|LIAISON|LIDL|LIFE|LIFEINSURANCE|LIFESTYLE|LIGHTING|LIKE|LILLY|LIMITED|LIMO|LINCOLN|LINDE|LINK|LIPSY|LIVE|LIVING|LIXIL|LK|LLC|LOAN|LOANS|LOCKER|LOCUS|LOFT|LOL|LONDON|LOTTE|LOTTO|LOVE|LPL|LPLFINANCIAL|LR|LS|LT|LTD|LTDA|LU|LUNDBECK|LUPIN|LUXE|LUXURY|LV|LY|MA|MACYS|MADRID|MAIF|MAISON|MAKEUP|MAN|MANAGEMENT|MANGO|MAP|MARKET|MARKETING|MARKETS|MARRIOTT|MARSHALLS|MASERATI|MATTEL|MBA|MC|MCKINSEY|MD|ME|MED|MEDIA|MEET|MELBOURNE|MEME|MEMORIAL|MEN|MENU|MERCKMSD|METLIFE|MG|MH|MIAMI|MICROSOFT|MIL|MINI|MINT|MIT|MITSUBISHI|MK|ML|MLB|MLS|MM|MMA|MN|MO|MOBI|MOBILE|MOBILY|MODA|MOE|MOI|MOM|MONASH|MONEY|MONSTER|MOPAR|MORMON|MORTGAGE|MOSCOW|MOTO|MOTORCYCLES|MOV|MOVIE|MOVISTAR|MP|MQ|MR|MS|MSD|MT|MTN|MTR|MU|MUSEUM|MUTUAL|MV|MW|MX|MY|MZ|NA|NAB|NADEX|NAGOYA|NAME|NATIONWIDE|NATURA|NAVY|NBA|NC|NE|NEC|NET|NETBANK|NETFLIX|NETWORK|NEUSTAR|NEW|NEWHOLLAND|NEWS|NEXT|NEXTDIRECT|NEXUS|NF|NFL|NG|NGO|NHK|NI|NICO|NIKE|NIKON|NINJA|NISSAN|NISSAY|NL|NO|NOKIA|NORTHWESTERNMUTUAL|NORTON|NOW|NOWRUZ|NOWTV|NP|NR|NRA|NRW|NTT|NU|NYC|NZ|OBI|OBSERVER|OFF|OFFICE|OKINAWA|OLAYAN|OLAYANGROUP|OLDNAVY|OLLO|OM|OMEGA|ONE|ONG|ONL|ONLINE|ONYOURSIDE|OOO|OPEN|ORACLE|ORANGE|ORG|ORGANIC|ORIGINS|OSAKA|OTSUKA|OTT|OVH|PA|PAGE|PANASONIC|PARIS|PARS|PARTNERS|PARTS|PARTY|PASSAGENS|PAY|PCCW|PE|PET|PF|PFIZER|PG|PH|PHARMACY|PHD|PHILIPS|PHONE|PHOTO|PHOTOGRAPHY|PHOTOS|PHYSIO|PIAGET|PICS|PICTET|PICTURES|PID|PIN|PING|PINK|PIONEER|PIZZA|PK|PL|PLACE|PLAY|PLAYSTATION|PLUMBING|PLUS|PM|PN|PNC|POHL|POKER|POLITIE|PORN|POST|PR|PRAMERICA|PRAXI|PRESS|PRIME|PRO|PROD|PRODUCTIONS|PROF|PROGRESSIVE|PROMO|PROPERTIES|PROPERTY|PROTECTION|PRU|PRUDENTIAL|PS|PT|PUB|PW|PWC|PY|QA|QPON|QUEBEC|QUEST|QVC|RACING|RADIO|RAID|RE|READ|REALESTATE|REALTOR|REALTY|RECIPES|RED|REDSTONE|REDUMBRELLA|REHAB|REISE|REISEN|REIT|RELIANCE|REN|RENT|RENTALS|REPAIR|REPORT|REPUBLICAN|REST|RESTAURANT|REVIEW|REVIEWS|REXROTH|RICH|RICHARDLI|RICOH|RIGHTATHOME|RIL|RIO|RIP|RMIT|RO|ROCHER|ROCKS|RODEO|ROGERS|ROOM|RS|RSVP|RU|RUGBY|RUHR|RUN|RW|RWE|RYUKYU|SA|SAARLAND|SAFE|SAFETY|SAKURA|SALE|SALON|SAMSCLUB|SAMSUNG|SANDVIK|SANDVIKCOROMANT|SANOFI|SAP|SARL|SAS|SAVE|SAXO|SB|SBI|SBS|SC|SCA|SCB|SCHAEFFLER|SCHMIDT|SCHOLARSHIPS|SCHOOL|SCHULE|SCHWARZ|SCIENCE|SCJOHNSON|SCOR|SCOT|SD|SE|SEARCH|SEAT|SECURE|SECURITY|SEEK|SELECT|SENER|SERVICES|SES|SEVEN|SEW|SEX|SEXY|SFR|SG|SH|SHANGRILA|SHARP|SHAW|SHELL|SHIA|SHIKSHA|SHOES|SHOP|SHOPPING|SHOUJI|SHOW|SHOWTIME|SHRIRAM|SI|SILK|SINA|SINGLES|SITE|SJ|SK|SKI|SKIN|SKY|SKYPE|SL|SLING|SM|SMART|SMILE|SN|SNCF|SO|SOCCER|SOCIAL|SOFTBANK|SOFTWARE|SOHU|SOLAR|SOLUTIONS|SONG|SONY|SOY|SPACE|SPORT|SPOT|SPREADBETTING|SR|SRL|SRT|ST|STADA|STAPLES|STAR|STARHUB|STATEBANK|STATEFARM|STC|STCGROUP|STOCKHOLM|STORAGE|STORE|STREAM|STUDIO|STUDY|STYLE|SU|SUCKS|SUPPLIES|SUPPLY|SUPPORT|SURF|SURGERY|SUZUKI|SV|SWATCH|SWIFTCOVER|SWISS|SX|SY|SYDNEY|SYMANTEC|SYSTEMS|SZ|TAB|TAIPEI|TALK|TAOBAO|TARGET|TATAMOTORS|TATAR|TATTOO|TAX|TAXI|TC|TCI|TD|TDK|TEAM|TECH|TECHNOLOGY|TEL|TELEFONICA|TEMASEK|TENNIS|TEVA|TF|TG|TH|THD|THEATER|THEATRE|TIAA|TICKETS|TIENDA|TIFFANY|TIPS|TIRES|TIROL|TJ|TJMAXX|TJX|TK|TKMAXX|TL|TM|TMALL|TN|TO|TODAY|TOKYO|TOOLS|TOP|TORAY|TOSHIBA|TOTAL|TOURS|TOWN|TOYOTA|TOYS|TR|TRADE|TRADING|TRAINING|TRAVEL|TRAVELCHANNEL|TRAVELERS|TRAVELERSINSURANCE|TRUST|TRV|TT|TUBE|TUI|TUNES|TUSHU|TV|TVS|TW|TZ|UA|UBANK|UBS|UCONNECT|UG|UK|UNICOM|UNIVERSITY|UNO|UOL|UPS|US|UY|UZ|VA|VACATIONS|VANA|VANGUARD|VC|VE|VEGAS|VENTURES|VERISIGN|VERSICHERUNG|VET|VG|VI|VIAJES|VIDEO|VIG|VIKING|VILLAS|VIN|VIP|VIRGIN|VISA|VISION|VISTAPRINT|VIVA|VIVO|VLAANDEREN|VN|VODKA|VOLKSWAGEN|VOLVO|VOTE|VOTING|VOTO|VOYAGE|VU|VUELOS|WALES|WALMART|WALTER|WANG|WANGGOU|WARMAN|WATCH|WATCHES|WEATHER|WEATHERCHANNEL|WEBCAM|WEBER|WEBSITE|WED|WEDDING|WEIBO|WEIR|WF|WHOSWHO|WIEN|WIKI|WILLIAMHILL|WIN|WINDOWS|WINE|WINNERS|WME|WOLTERSKLUWER|WOODSIDE|WORK|WORKS|WORLD|WOW|WS|WTC|WTF|XBOX|XEROX|XFINITY|XIHUAN|XIN|XN--11B4C3D|XN--1CK2E1B|XN--1QQW23A|XN--2SCRJ9C|XN--30RR7Y|XN--3BST00M|XN--3DS443G|XN--3E0B707E|XN--3HCRJ9C|XN--3OQ18VL8PN36A|XN--3PXU8K|XN--42C2D9A|XN--45BR5CYL|XN--45BRJ9C|XN--45Q11C|XN--4GBRIM|XN--54B7FTA0CC|XN--55QW42G|XN--55QX5D|XN--5SU34J936BGSG|XN--5TZM5G|XN--6FRZ82G|XN--6QQ986B3XL|XN--80ADXHKS|XN--80AO21A|XN--80AQECDR1A|XN--80ASEHDB|XN--80ASWG|XN--8Y0A063A|XN--90A3AC|XN--90AE|XN--90AIS|XN--9DBQ2A|XN--9ET52U|XN--9KRT00A|XN--B4W605FERD|XN--BCK1B9A5DRE4C|XN--C1AVG|XN--C2BR7G|XN--CCK2B3B|XN--CG4BKI|XN--CLCHC0EA0B2G2A9GCD|XN--CZR694B|XN--CZRS0T|XN--CZRU2D|XN--D1ACJ3B|XN--D1ALF|XN--E1A4C|XN--ECKVDTC9D|XN--EFVY88H|XN--ESTV75G|XN--FCT429K|XN--FHBEI|XN--FIQ228C5HS|XN--FIQ64B|XN--FIQS8S|XN--FIQZ9S|XN--FJQ720A|XN--FLW351E|XN--FPCRJ9C3D|XN--FZC2C9E2C|XN--FZYS8D69UVGM|XN--G2XX48C|XN--GCKR3F0F|XN--GECRJ9C|XN--GK3AT1E|XN--H2BREG3EVE|XN--H2BRJ9C|XN--H2BRJ9C8C|XN--HXT814E|XN--I1B6B1A6A2E|XN--IMR513N|XN--IO0A7I|XN--J1AEF|XN--J1AMH|XN--J6W193G|XN--JLQ61U9W7B|XN--JVR189M|XN--KCRX77D1X4A|XN--KPRW13D|XN--KPRY57D|XN--KPU716F|XN--KPUT3I|XN--L1ACC|XN--LGBBAT1AD8J|XN--MGB9AWBF|XN--MGBA3A3EJT|XN--MGBA3A4F16A|XN--MGBA7C0BBN0A|XN--MGBAAKC7DVF|XN--MGBAAM7A8H|XN--MGBAB2BD|XN--MGBAI9AZGQP6J|XN--MGBAYH7GPA|XN--MGBB9FBPOB|XN--MGBBH1A|XN--MGBBH1A71E|XN--MGBC0A9AZCG|XN--MGBCA7DZDO|XN--MGBERP4A5D4AR|XN--MGBGU82A|XN--MGBI4ECEXP|XN--MGBPL2FH|XN--MGBT3DHD|XN--MGBTX2B|XN--MGBX4CD0AB|XN--MIX891F|XN--MK1BU44C|XN--MXTQ1M|XN--NGBC5AZD|XN--NGBE9E0A|XN--NGBRX|XN--NODE|XN--NQV7F|XN--NQV7FS00EMA|XN--NYQY26A|XN--O3CW4H|XN--OGBPF8FL|XN--OTU796D|XN--P1ACF|XN--P1AI|XN--PBT977C|XN--PGBS0DH|XN--PSSY2U|XN--Q9JYB4C|XN--QCKA1PMC|XN--QXAM|XN--RHQV96G|XN--ROVU88B|XN--RVC1E0AM3E|XN--S9BRJ9C|XN--SES554G|XN--T60B56A|XN--TCKWE|XN--TIQ49XQYJ|XN--UNUP4Y|XN--VERMGENSBERATER-CTB|XN--VERMGENSBERATUNG-PWB|XN--VHQUV|XN--VUQ861B|XN--W4R85EL8FHU5DNRA|XN--W4RS40L|XN--WGBH1C|XN--WGBL6A|XN--XHQ521B|XN--XKC2AL3HYE2A|XN--XKC2DL3A5EE0H|XN--Y9A3AQ|XN--YFRO4I67O|XN--YGBI2AMMX|XN--ZFR164B|XXX|XYZ|YACHTS|YAHOO|YAMAXUN|YANDEX|YE|YODOBASHI|YOGA|YOKOHAMA|YOU|YOUTUBE|YT|YUN|ZA|ZAPPOS|ZARA|ZERO|ZIP|ZIPPO|ZM|ZONE|ZUERICH|ZW)(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\;\?\'\\\+&amp;%\$#\=~_\-]+))*$

The list of superdomains are collected in 1 January 2019 from http://data.iana.org/TLD/tlds-alpha-by-domain.txt

It would make more sense to get the domain list from ICANN, set it up as a list, and do a contains check against it, than to make every url domain into a piece in this gigantic and unsustainable regex. — PKD, Jun 17 '22 at 00:12

Regular expression for URL

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