| Registered | Name | Holder | Registrar |
|---|---|---|---|
| 2018-01-02 | hmlämpö.fi | HC Heating & Cooling Oy | Opiferum Oy |
| 2018-01-02 | hmlampo.fi | HC Heating & Cooling Oy | Opiferum Oy |
| 2018-01-02 | hämeenmaalämpö.fi | HC Heating & Cooling Oy | Opiferum Oy |
| 2011-03-03 | hameenmaalampo.fi | HC Heating & Cooling Oy | Opiferum Oy |