| Action | Code | Name | Label | Hierarchy | Part Of | Version | Valid From | Valid Until |
|---|---|---|---|---|---|---|---|---|
| TT | Trinidad and Tobago | Trinidad and Tobago | 0 Country | — | Active | 23/07/2020 | — | |
| TV | Tuvalu | Tuvalu | 0 Country | — | Active | 23/07/2020 | — | |
| TW | Taiwan | Taiwan | 0 Country | — | Active | 23/07/2020 | — | |
| TZ | Tanzania | Tanzania | 0 Country | — | Active | 23/07/2020 | — | |
| U | Utrecht | Utrecht | 1 NL1P Province [NL] | Netherlands | Active | 23/07/2020 | — | |
| UA | Ukraine | Ukraine | 0 Country | — | Active | 23/07/2020 | — | |
| UG | Uganda | Uganda | 0 Country | — | Active | 23/07/2020 | — | |
| UM110 | Howland Island | Howland Island | 0 Country | — | Active | 23/07/2020 | — | |
| UM123 | Jarvis Island | Jarvis Island | 0 Country | — | Active | 23/07/2020 | — | |
| UM125 | Johnston Atoll | Johnston Atoll | 0 Country | — | Active | 23/07/2020 | — |