| Company name | Reg. code |
|---|---|
| TELIL OÜ | 16869160 |
| TELIT OÜ | 10858942 |
| TELLI OÜ | 14722949 |
| TELI OÜ | 14441373 |
| TELL OÜ | 11686041 |
| TELLI TÜNN OÜ | 11511591 |
| TELLI TOIT OÜ | 12664120 |
| TELLI PÕLD OÜ | 14486006 |
| TELLI REHVIBUSS OÜ | 16597649 |
| TELLI KOJU OÜ | 16109414 |
| TELLI TEENUS OÜ | 16715190 |
| TELI PAIGALDUS OÜ kustutatud | 14155077 |
| TELLI KOKK KOJU OÜ | 14054413 |
| TELL-LINE GRUPP OÜ | 11399838 |
| FG1 MEEDIA OÜ kustutatud (former name OÜ Telli.ee) | 14087424 |
| UPIN IT OÜ (former name Telli Arvuti OÜ) | 12639925 |
| ARELION ESTONIA OÜ (former name Telia Carrier Estonia OÜ) | 12606073 |
| TEVIL GROUP OÜ | 12362671 |