EX-21 5 mtz12311710-kex21.htm EXHIBIT 21 Exhibit


Exhibit 21

MasTec, Inc.
SUBSIDIARIES OF MASTEC, INC.
December 31, 2017
NORTH AMERICA


EC Source Services, LLC (FL)
(100% owned by MasTec, Inc.)
 
 
Cash Construction Company, Inc. (TX)
(100% owned by MasTec North America, Inc.)
 
 
MasTec Canada, Inc. (Canada)
(100% owned by Pacer Construction Holdings Corporation (Canada))
       (100% owned by MasTec Canadian Holdco ULC (Canada))
             (100% owned by Big Country Florida, LLC (FL))
                  (100% owned by MasTec Cooperateif (UA))
 
 
MasTec Cooperateif (UA) (NL)
(99.99% owned by MasTec North America, Inc.)
(0.01% owned by MasTec Foreign Holdings, LLC (FL))
 
 
MasTec Lux Foreign Finance S.a r.l.
(100% owned by MasTec FFH, Inc. (FL))
       (100% owned by MasTec North America, Inc.)
 
 
MasTec Network Solutions, LLC f/k/a Nsoro MasTec, LLC (FL)
(100% owned by MasTec, Inc.)
 
 
MasTec North America, Inc. (FL)
(100% owned by MasTec, Inc.)
 
 
Precision Pipeline LLC (WI)
(100% owned by Precision Acquisition, LLC (WI))
     (100% owned by MasTec, Inc.)
 
 
Pumpco, Inc. (TX)
(100% owned by MasTec North America, Inc.)
 
 
SEFNCO Communications, Inc. (CA)
(100% owned by MasTec North America, Inc.)
 
 
Wanzek Construction, Inc. (ND)
(100% owned by MasTec North America, Inc.)
 
 
Certain other subsidiaries have been omitted because, in the aggregate, they would not constitute a significant subsidiary.