Exhibit 21.1
PRINCIPAL SUBSIDIARIES OF DYCOM INDUSTRIES, INC.
The following table sets forth the Registrant's principal subsidiaries and the jurisdiction of incorporation of each. Each subsidiary is 100% owned by the Registrant or its subsidiaries.
| Subsidiary | Jurisdiction |
| Ansco & Associates, LLC | Delaware |
| Blair Park Services, LLC | Delaware |
| Broadband Express, LLC | Delaware |
| C-2 Utility Contractors, LLC | Delaware |
| Cable Connectors, LLC | Delaware |
| CableCom of California, Inc. | Delaware |
| CableCom, LLC | Delaware |
| Can-Am Communications, Inc. | Delaware |
| Cavo Broadband Communications, LLC | Delaware |
| CertusView Technologies, LLC | Delaware |
| CMI Services, Inc. | Florida |
| Communication Services, LLC | North Carolina |
| Communications Construction Group, LLC | Delaware |
| Dycom Capital Management, Inc. | Delaware |
| Dycom Corporate Identity, Inc. | Delaware |
| Dycom Identity, LLC | Delaware |
| Dycom Investments, Inc. | Delaware |
| E A Technical Services, Inc. | Georgia |
| Engineering Associates, Inc. | Georgia |
| Ervin Cable Construction, LLC | Delaware |
| Globe Communications, LLC | North Carolina |
| Golden State Utility Co. | Delaware |
| Ivy H. Smith Company, LLC | Delaware |
| Lambert’s Cable Splicing Company, LLC | Delaware |
| Locating, Inc. | Washington |
| Midtown Express, LLC | Delaware |
| NeoCom Solutions, Inc. | Georgia |
| Nichols Construction, LLC | Delaware |
| Niels Fugal Sons Company of California, Inc. | Delaware |
| Niels Fugal Sons Company, LLC | Delaware |
| North Sky Communications, Inc. | Delaware |
| North Sky Telecom ULC | British Columbia, Canada |
| Parkside Site & Utility Company Corporation | Delaware |
| Parkside Utility Construction, LLC | Delaware |
| Pauley Construction Inc. | Arizona |
| PBG Acquisition III, LLC | Delaware |
| Precision Valley Communications of Vermont, LLC | Delaware |
| Prince Telecom, LLC | Delaware |
| Professional Teleconcepts, Inc. | Illinois |
| Professional Teleconcepts, Inc. | New York |
| RJE Canada, Inc. | Delaware |
| RJE Canada, ULC | Alberta, Canada |
| RJE Telecom, LLC | Delaware |
| S.T.S., LLC | Tennessee |
| Sage Telecommunications Corp. of Colorado, LLC | Colorado |
| Spalj Construction Company | Delaware |
| Spectrum Wireless Solutions, Inc. | Delaware |
| Star Construction, LLC | Delaware |
| Stevens Communications, LLC | Delaware |
| TCS Communications, LLC | Delaware |
| Tesinc, LLC | Delaware |
| Tjader, L.L.C. | Delaware |
| Trawick Construction Company, Inc. | Florida |
| Triple-D Communications, LLC | Delaware |
| Underground Specialties, LLC | Delaware |
| UtiliQuest, LLC | Georgia |
| VCI Construction, Inc. | Delaware |
| VCI Utility Services Holdings, LLC | Delaware |
| VCI Utility Services, Inc. | Delaware |
| Watts Brothers Cable Construction, Inc. | Kentucky |
| White Mountain Cable Construction, LLC | Delaware |