Kabuntalan (Tumbao) comprises 17 barangays with an estimated population of 8,242. 16 of its barangays (94%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bagumbayan | 412 | 0 | Dead zone: no towers from any source |
| Buterin | 711 | 1 | Crowdsourced signal only (no registered tower) |
| Dadtumog (Dadtumeg) | 277 | 0 | Dead zone: no towers from any source |
| Gambar | 895 | 0 | Dead zone: no towers from any source |
| Ganta | 60 | 0 | Dead zone: no towers from any source |
| Katidtuan | 370 | 0 | Dead zone: no towers from any source |
| Langeban | 493 | 0 | Dead zone: no towers from any source |
| Liong | 530 | 0 | Dead zone: no towers from any source |
| Lower Taviran | 449 | 0 | Dead zone: no towers from any source |
| Maitong | 725 | 0 | Dead zone: no towers from any source |
| Matilak | 133 | 0 | Dead zone: no towers from any source |
| Pagalungan | 700 | 0 | Dead zone: no towers from any source |
| Payan | 808 | 0 | Dead zone: no towers from any source |
| Pedtad | 456 | 0 | Dead zone: no towers from any source |
| Pened | 215 | 0 | Dead zone: no towers from any source |
| Poblacion | 154 | 0 | Dead zone: no towers from any source |
| Upper Taviran | 854 | 0 | Dead zone: no towers from any source |