| 180i Technology & Marketing | California |
| 1821 Design | Illinois |
| 1843 Capital | District of Columbia |
| 186networks | Michigan |
| 1871 | Illinois |
| 19 Ideas, Inc. | |
| 1901 Group, LLC | Virginia |
| 1905 New Media, Inc. | |
| 1909 Digital | |
| 1910 Genetics | Massachusetts |
| 1950labs | |
| 1959, Inc. | California |
| 1969 Communications | California |
| 1981 Digital Marketing Consultants | |
| 19Labs | California |
| 1:1 Studios | |
| 1BrightStar | North Carolina |
| 1build | California |
| 1C International, LLC | California |
| 1cBio | |
| 1Center | |
| 1COR Consulting, LLC | |
| 1D.works | |
| 1Digital Agency | Pennsylvania |
| 1Elevan Biopharmaceuticals, Inc. | |
| 1EZ Creative Orange County Web Design | California |
| 1Flow | California |
| 1Fort | |
| 1G Media Holdings | |
| 1Host | California |
| 1Kosmos, Inc. | New Jersey |
| 1kx | New York |
| 1mage Software, Inc. | Colorado |
| 1MDE | Pennsylvania |
| 1Money Network Technologies Ltd | |
| 1More International Ltd | California |
| 1north | Florida |
| 1O8 Agency | |
| 1Path | Georgia |
| 1Point2Interactive | |
| 1r Agency | |
| 1Rivet | |
| 1SEC, Inc. | |
| 1second.com | Florida |
| 1SEO | Pennsylvania |
| 1ShoppingCart | Florida |
| 1SkyMedia.com | Pennsylvania |
| 1Soft Corporation | Oregon |
| 1st Audio USA | New York |
| 1st Choice Website Solutions | Arizona |