#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?m)https?://(?:www\.|)([\w.-]+).*"
Local $sString = "https://domen.site.ru/podsait/03285926/#2412747495" & @CRLF & _
"http://www.site.ru/site/24722305" & @CRLF & _
"https://www.domen.site.ru/site/247493215/site" & @CRLF & _
"site.ru"
Local $sSubst = "$1"
Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst)
MsgBox($MB_SYSTEMMODAL, "Result", $sResult)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm