| Taiwan | 886 | N/A | $0.03 | $0.02 | $0.01 | $0.03 | Free | $0.03 | Free | |
| Taiwan - Mobile/SS | 886 | 9, 60, 70 $0.11 | $0.13 | $0.11 | $0.07 | $0.13 | $0.13 | $0.13 | $0.13 | |
| Taiwan - Taipei | 886 | 2 | $0.03 | $0.02 | $0.01 | $0.03 | Free | $0.03 | Free | |
| Tajikistan | 992 | N/A | $0.18 | $0.14 | $0.09 | $0.18 | $0.18 | $0.18 | $0.18 | |
| Tajikistan - Mobile/SS | 992 | 90 | $0.18 | $0.14 | $0.09 | $0.18 | $0.18 | $0.18 | $0.18 | |
| Tanzania | 255 | N/A | $0.22 | $0.18 | $0.11 | $0.22 | $0.22 | $0.22 | $0.22 | |
| Tanzania - Mobile/SS | 255 | 245, 7, 8, 9 | $0.31 | $0.25 | $0.15 | $0.31 | $0.31 | $0.31 | $0.31 | |
| Thailand | 66 | N/A | $0.03 | $0.02 | $0.01 | $0.03 | Free | $0.03 | Free | |
| Thailand - Bangkok | 66 | 2 | $0.03 | $0.02 | $0.01 | $0.03 | Free | $0.03 | Free | |
| Thailand - Mobile/SS | 66 | 1, 30, 31, 33, 4, 5, 6, 8, 9, 70, 71, 72, 78, 79 | $0.03 | $0.02 | $0.01 | $0.03 | Free | $0.03 | Free | |
| Togo | 228 | N/A | $0.21 | $0.17 | $0.11 | $0.21 | $0.21 | $0.21 | $0.21 | |
| Togo - Mobile/SS | 228 | 9 | $0.28 | $0.22 | $0.14 | $0.28 | $0.28 | $0.28 | $0.28 | |
| Tokelau | 690 | N/A | $1.85 | $1.48 | $0.93 | $1.85 | $1.85 | $1.85 | $1.85 | |
| Tokelau - Mobile/SS | 690 | 5, 6, 7, 8 | $1.85 | $1.48 | $0.93 | $1.85 | $1.85 | $1.85 | $1.85 | |
| Tonga Islands | 676 | N/A | $0.32 | $0.25 | $0.16 | $0.32 | $0.32 | $0.32 | $0.32 | |
| Tonga Islands - Mobile/SS | 676 | 56 | $0.32 | $0.26 | $0.16 | $0.32 | $0.32 | $0.32 | $0.32 | |
| Trinidad & Tobago | 868 | N/A | $0.16 | $0.13 | $0.08 | $0.16 | $0.16 | $0.16 | $0.16 | |
| Trinidad & Tobago - Mobile/SS | 868 | 689 | 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 46, 47, 48, 49, 619, 620, 68, 678, 7 | $0.23 | $0.18 | $0.12 | $0.23 | $0.23 | $0.23 | $0.23 |
| Tunisia | 216 | N/A | $0.33 | $0.26 | $0.16 | $0.33 | $0.33 | $0.33 | $0.33 | |
| Tunisia - Mobile/SS | 216 | 2, 72 | $0.45 | $0.36 | $0.23 | $0.45 | $0.45 | $0.45 | $0.45 | |
| Tunisia - Mobile/SS ORASCOM | 216 | 20, 21, 22, 23, 24 | $0.33 | $0.27 | $0.17 | $0.33 | $0.33 | $0.33 | $0.33 | |
| Tunisia - Mobile/SS TUNTEL | 216 | 9 | $0.52 | $0.42 | $0.26 | $0.52 | $0.52 | $0.52 | $0.52 | |
| Turkey | 90 | N/A | $0.06 | $0.05 | $0.03 | Free | Free | $0.06 | $0.06 | |
| Turkey - Ankara | 90 | 312 | $0.04 | $0.03 | $0.02 | Free | Free | $0.04 | Free | |
| Turkey - Istanbul | 90 | 212, 216 | $0.04 | $0.03 | $0.02 | Free | Free | $0.04 | Free | |
| Turkey - Mobile/SS | 90 | 5, 900 | $0.34 | $0.27 | $0.17 | $0.34 | $0.34 | $0.34 | $0.34 | |
| Turkey - North Cyprus | 90 | 392 | $0.12 | $0.09 | $0.06 | $0.12 | $0.12 | $0.12 | $0.12 | |
| Turkmenistan | 993 | N/A | $0.23 | $0.19 | $0.12 | $0.23 | $0.23 | $0.23 | $0.23 | |
| Turkmenistan - Mobile/SS | 993 | 31, 32, 33, 34 | $0.23 | $0.19 | $0.12 | $0.23 | $0.23 | $0.23 | $0.23 | |
| Turks & Caicos | 649 | N/A | $0.25 | $0.20 | $0.12 | $0.25 | $0.25 | $0.25 | $0.25 | |
| Turks & Caicos - Mobile/SS | 649 | 231, 232, 241, 242, 243, 244, 245, 249, 331, 332, 333, 341, 342, 343, 386, 431, 432, 441, 442, 444, 445, 446 | $0.49 | $0.39 | $0.24 | $0.49 | $0.49 | $0.49 | $0.49 | |
| Tuvalu | 688 | N/A | $1.33 | $1.06 | $0.66 | $1.33 | $1.33 | $1.33 | $1.33 | |
| Tuvalu - Mobile/SS | 688 | 6,7, 8 | $1.33 | $1.06 | $0.66 | $1.33 | $1.33 | $1.33 | $1.33 | |