| australia | | uncultured nitrobacter sp. | species | 1 | 0 |
| china | | uncultured nitrobacter sp. | species | 107 | 0 |
| china | beijing | uncultured nitrobacter sp. | species | 9 | 0 |
| china | shandong | uncultured nitrobacter sp. | species | 1 | 0 |
| china | sichuan | uncultured nitrobacter sp. | species | 5 | 0 |
| france | | uncultured nitrobacter sp. | species | 1 | 0 |
| germany | | uncultured nitrobacter sp. | species | 1 | 0 |
| japan | | uncultured nitrobacter sp. | species | 6 | 0 |
| japan | hokkaido prefecture | uncultured nitrobacter sp. | species | 1 | 0 |
| japan | kyoto prefecture | uncultured nitrobacter sp. | species | 1 | 0 |
| pakistan | | uncultured nitrobacter sp. | species | 2 | 0 |
| saudi arabia | | uncultured nitrobacter sp. | species | 1 | 0 |
| south africa | | uncultured nitrobacter sp. | species | 18 | 0 |
| spain | | uncultured nitrobacter sp. | species | 6 | 0 |
| taiwan | | uncultured nitrobacter sp. | species | 10 | 0 |
| taiwan | taiwan municipality | uncultured nitrobacter sp. | species | 10 | 0 |
| thailand | | uncultured nitrobacter sp. | species | 1 | 0 |
| thailand | bangkok | uncultured nitrobacter sp. | species | 1 | 0 |
| united states | kansas | uncultured nitrobacter sp. | species | 2 | 0 |
| united states | michigan | uncultured nitrobacter sp. | species | 3 | 0 |