| australia | | uncultured ammonia-oxidizing bacterium | species | 11 | 0 |
| austria | | uncultured ammonia-oxidizing bacterium | species | 33 | 0 |
| brazil | | uncultured ammonia-oxidizing bacterium | species | 69 | 0 |
| canada | | uncultured ammonia-oxidizing bacterium | species | 15 | 0 |
| china | | uncultured ammonia-oxidizing bacterium | species | 1202 | 0 |
| china | chongqing | uncultured ammonia-oxidizing bacterium | species | 4 | 0 |
| china | guangdong | uncultured ammonia-oxidizing bacterium | species | 104 | 0 |
| china | hebei | uncultured ammonia-oxidizing bacterium | species | 40 | 0 |
| china | henan | uncultured ammonia-oxidizing bacterium | species | 13 | 0 |
| china | hunan | uncultured ammonia-oxidizing bacterium | species | 10 | 0 |
| china | inner mongolia | uncultured ammonia-oxidizing bacterium | species | 15 | 0 |
| china | jiangsu | uncultured ammonia-oxidizing bacterium | species | 16 | 0 |
| china | shanxi | uncultured ammonia-oxidizing bacterium | species | 13 | 0 |
| china | sichuan | uncultured ammonia-oxidizing bacterium | species | 156 | 0 |
| china | tibet | uncultured ammonia-oxidizing bacterium | species | 37 | 0 |
| denmark | | uncultured ammonia-oxidizing bacterium | species | 25 | 0 |
| finland | | uncultured ammonia-oxidizing bacterium | species | 34 | 0 |
| germany | | uncultured ammonia-oxidizing bacterium | species | 217 | 0 |
| germany | hesse | uncultured ammonia-oxidizing bacterium | species | 92 | 0 |
| india | | uncultured ammonia-oxidizing bacterium | species | 6 | 0 |
| indonesia | south sulawesi province | uncultured ammonia-oxidizing bacterium | species | 2 | 0 |
| indonesia | west java province | uncultured ammonia-oxidizing bacterium | species | 60 | 0 |
| israel | | uncultured ammonia-oxidizing bacterium | species | 17 | 0 |
| israel | northern district | uncultured ammonia-oxidizing bacterium | species | 18 | 0 |
| japan | hokkaido prefecture | uncultured ammonia-oxidizing bacterium | species | 14 | 0 |
| japan | ibaraki prefecture | uncultured ammonia-oxidizing bacterium | species | 21 | 0 |
| japan | kanagawa prefecture | uncultured ammonia-oxidizing bacterium | species | 30 | 0 |
| japan | shizuoka prefecture | uncultured ammonia-oxidizing bacterium | species | 25 | 0 |
| mongolia | | uncultured ammonia-oxidizing bacterium | species | 80 | 0 |
| new zealand | canterbury | uncultured ammonia-oxidizing bacterium | species | 17 | 0 |
| new zealand | northland | uncultured ammonia-oxidizing bacterium | species | 3 | 0 |
| new zealand | southland | uncultured ammonia-oxidizing bacterium | species | 17 | 0 |
| new zealand | waikato | uncultured ammonia-oxidizing bacterium | species | 25 | 0 |
| new zealand | west coast | uncultured ammonia-oxidizing bacterium | species | 4 | 0 |
| poland | | uncultured ammonia-oxidizing bacterium | species | 8 | 0 |
| spain | catalonia | uncultured ammonia-oxidizing bacterium | species | 9 | 0 |
| taiwan | | uncultured ammonia-oxidizing bacterium | species | 38 | 0 |
| thailand | nakhon nayok province | uncultured ammonia-oxidizing bacterium | species | 2 | 0 |
| turkey | | uncultured ammonia-oxidizing bacterium | species | 19 | 0 |
| united kingdom | scotland | uncultured ammonia-oxidizing bacterium | species | 2 | 0 |
| united states | alaska | uncultured ammonia-oxidizing bacterium | species | 181 | 0 |
| united states | california | uncultured ammonia-oxidizing bacterium | species | 88 | 0 |
| united states | colorado | uncultured ammonia-oxidizing bacterium | species | 4 | 0 |
| united states | florida | uncultured ammonia-oxidizing bacterium | species | 22 | 0 |
| united states | maine | uncultured ammonia-oxidizing bacterium | species | 342 | 0 |
| united states | minnesota | uncultured ammonia-oxidizing bacterium | species | 1 | 0 |
| united states | north carolina | uncultured ammonia-oxidizing bacterium | species | 112 | 0 |
| united states | oregon | uncultured ammonia-oxidizing bacterium | species | 12 | 0 |