^start of line
\d{5}a digit, repeated exactly 5 times
\s*any whitespace character, repeated any number of times
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
.+any character (except for line terminators), repeated at least once
Positive Lookahead(?=\b\d+,) \ban ASCII word boundary
\d+a digit, repeated at least once
,the literal , (4410 / 548 / 2C16)
\d+a digit, repeated at least once
.*any character (except for line terminators), repeated any number of times
Telthe literal text Tel (case sensitive) .any character (except for line terminators)
\sany whitespace character
+matches at least one character from the set below:
\da digit
the literal (3210 / 408 / 2016)
$end of line
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string