Area code 721
48 number blocks indexed across 6 carriers.
States: SF (48)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| MULT | Multiple OCN Listing | Administrative / Reserved | 14 | — | ||
| 639G | TelCell NV | Philipsburg, | International Carrier | 13 | — | |
| 636G | Radcom Corporation NV dba UTS | Philipsburg, | International Carrier | 9 | — | |
| 637G | St. Maarten Telephone Company NV | Philipsburg, | International Carrier | 9 | — | |
| 638G | St. Maarten International Telecommunications Services dba SMITCOMS | Philipsburg, | International Carrier | 2 | — | |
| 635G | Antelecom NV dba UTS | Phillipsburg, | International Carrier | 1 | — |