| Naics index | Naics index description |
|---|---|
| 519210 | Reference libraries |
| 519290 | Search portals, Internet |
| 519290 | Stock photo agencies |
| 519290 | Clipping services, news |
| 519290 | Internet search portals |
| 519290 | Internet search Web sites |
| 519290 | News clipping services |
| 519290 | Portals, web search |
| 519290 | Press clipping services |
| 519290 | Telephone-based recorded information services |