| Naics index | Naics index description |
|---|---|
| 541810 | Advertising agency consulting services |
| 541810 | Digital advertising agencies |
| 541810 | Internet advertising agencies |
| 541810 | Online advertising agencies |
| 541820 | Lobbying services |
| 541820 | Lobbyists' offices |
| 541820 | Political consulting services |
| 541820 | Public relations agencies |
| 541820 | Public relations consulting services |
| 541820 | Public relations services |