import re
regex = r"\d\d\d.\d\d.\d\d.\d\d\d"
test_str = "zproxy.lum-superproxy.io:22225:lum-customer-hl_b6b5a2b1-zone-static-ip-139.81.42.162:y9r79v0uzfab"
matches = re.finditer(regex, test_str)
for matchNum, match in enumerate(matches, start=1):
print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
for groupNum in range(0, len(match.groups())):
groupNum = groupNum + 1
print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))
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