($circuit_id) = $if_descr =~ /
             .*?
             (
                DHEC
                  (?:
                    \.?
                  )
                [^\s]+
             )
/xims;

##</code><code>##

($circuit_id) = $if_descr =~ /.*?
             (
                DHEC
                  (?=\.)
                [^\s]+
             )
/xims;