import re
o = r'(?:25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)'
regex = fr'\b{o}(?:\.{o}){{3}}\b'
# OR regex = fr'(?<!\d)(?<!\d\.){o}(?:\.{o}){{3}}(?!\.?\d)'
url_string = "http://110.234.52.124/paypal.ca/index.html"
print( bool(re.search(regex, url_string, re.X)) )
aW1wb3J0IHJlCm8gPSByJyg/OjI1WzAtNV18MlswLTRdWzAtOV18WzAtMV0/WzAtOV1bMC05XT8pJwpyZWdleCA9IGZyJ1xie299KD86XC57b30pe3szfX1cYicKIyBPUiByZWdleCA9IGZyJyg/PCFcZCkoPzwhXGRcLil7b30oPzpcLntvfSl7ezN9fSg/IVwuP1xkKScKdXJsX3N0cmluZyA9ICJodHRwOi8vMTEwLjIzNC41Mi4xMjQvcGF5cGFsLmNhL2luZGV4Lmh0bWwiCnByaW50KCBib29sKHJlLnNlYXJjaChyZWdleCwgdXJsX3N0cmluZywgcmUuWCkpICk=