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What Is a NAICS 8-Digit Code?
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SIC 6-Digit NAICS 8-Digit ISIC (International) NACE (Europe) SOC (Occupations) CIP (Programs) Extended SOC (O*NET)

NAICS 8-Digit Codes for "naics:23821"

Extended NAICS codes provide more specific industry categories within official 6-digit NAICS classifications, supporting more precise industry segmentation, market research, and business targeting. For official NAICS classification, use the 6-digit NAICS code.

Search this keyword in SIC 6-Digit codes.

companies

Verified U.S. companies available for purchase in this industry. Counts are based on primary business classifications.

Industry NAICS 8-Digit U.S. companies Add

Cable/Wire-Installation-Voice/Data Syst

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-01 companies 700companies

Communications Contractors

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-02 companies 62companies

Commutators

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-04 companies 3companies

Data Communications Systems-Cabling

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-05 companies 71companies

Electric Cable Fault Locating

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-06 companies 8companies

Electric Contractors

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-07 companies 43,553companies

Electric Contractors-Coml & Industrial

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-08 companies 67companies

Electric Contractors-Marine

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-09 companies 6companies

Electrical Designers

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-10 companies 459companies

Electronic Analysis

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-11 companies 13companies

Electronic Control Systems

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-12 companies 31companies

Factory Maintenance

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-13 companies 17companies

Fiber Optics-Services

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-14 companies 61companies

Fire Suppression

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-15 companies 49companies

Home Automation Systems

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-16 companies 334companies

Installation Service

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-17 companies 812companies

Landscape Lighting

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-18 companies 548companies

Lightning Protection Equipment

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-19 companies 78companies

Load Controllers

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-20 companies 3companies

Low Voltage Systems Contractors

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-21 companies 134companies

Pay Telephones & Booths Equipment & Service

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-22 companies 26companies

Street Lighting Contractors

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-23 companies 5companies

Telecommunications Contractors

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-24 companies 336companies

Telecommunications Equipment

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-25 companies 114companies

Teleconferencing Equipment

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-26 companies 3companies

Telephone-Installations

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-27 companies 22companies

Time Locks

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-28 companies —

Oil Field Electric Service

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-29 companies 3companies

Elevators-Telephone Systems

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-30 companies 2companies

Geothermal Htg/Cooling Equipment Systs-Dlrs

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-31 companies 149companies

Refrigerant Recovery

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-32 companies 17companies

Refrigeration Contractors

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-33 companies 105companies

Snow Melting Systems

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-35 companies 6companies

Tank Installation

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-36 companies 74companies

Thawing Service

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-37 companies 2companies

Mechanical Contractors

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-38 companies 7,684companies

Cable & Satellite-Wiring & Installation

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-40 companies 88companies

Heating & Combustion Consultants

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-41 companies 73companies

Sound & Entertainment

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-42 companies 84companies

Pet Containment Systems

Parent: Electrical Contractors and Other Wiring Installation Contractors

 Extended NAICS 238210-43 companies 149companies

Other classifications

Search "naics:23821" in SIC 6-Digit codes →

Sources & methodology

NAICS definitions: U.S. Census Bureau, 2022

SIC definitions: OSHA SIC Manual

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