This page contains information about which telephone companies the various 021 numbers are allocated to.
| First Digits | Status |
|---|---|
| 021 00 | Protected |
| 021 01 | Protected |
| 021 02 | Protected |
| 021 03 | Protected |
| 021 04 | Protected |
| 021 05 | Protected |
| 021 06 | Protected |
| 021 07 | Protected |
| 021 08 | Protected |
| 021 09 | Protected |
| 021 10 | Protected |
| 021 11 | Protected |
| 021 12 | Protected |
| 021 13 | Protected |
| 021 14 | Protected |
| 021 15 | Protected |
| 021 16 | Protected |
| 021 17 | Protected |
| 021 18 | Protected |
| 021 19 | Protected |
| 021 20 | Protected |
| 021 21 | Protected |
| 021 22 | Protected |
| 021 23 | Protected |
| 021 24 | Protected |
| 021 25 | Protected |
| 021 26 | Protected |
| 021 27 | Protected |
| 021 28 | Protected |
| 021 29 | Protected |
| 021 30 | Protected |
| 021 31 | Protected |
| 021 32 | Protected |
| 021 33 | Protected |
| 021 34 | Protected |
| 021 35 | Protected |
| 021 36 | Protected |
| 021 37 | Protected |
| 021 38 | Protected |
| 021 39 | Protected |
| 021 40 | Protected |
| 021 41 | Protected |
| 021 42 | Protected |
| 021 43 | Protected |
| 021 44 | Protected |
| 021 45 | Protected |
| 021 46 | Protected |
| 021 47 | Protected |
| 021 48 | Protected |
| 021 49 | Protected |
| 021 50 | Protected |
| 021 51 | Protected |
| 021 52 | Protected |
| 021 53 | Protected |
| 021 54 | Protected |
| 021 55 | Protected |
| 021 56 | Protected |
| 021 57 | Protected |
| 021 58 | Protected |
| 021 59 | Protected |
| 021 60 | Protected |
| 021 61 | Protected |
| 021 62 | Protected |
| 021 63 | Protected |
| 021 64 | Protected |
| 021 65 | Protected |
| 021 66 | Protected |
| 021 67 | Protected |
| 021 68 | Protected |
| 021 69 | Protected |
| 021 70 | Protected |
| 021 71 | Protected |
| 021 72 | Protected |
| 021 73 | Protected |
| 021 74 | Protected |
| 021 75 | Protected |
| 021 76 | Protected |
| 021 77 | Protected |
| 021 78 | Protected |
| 021 79 | Protected |
| 021 80 | Protected |
| 021 81 | Protected |
| 021 82 | Protected |
| 021 83 | Protected |
| 021 84 | Protected |
| 021 85 | Protected |
| 021 86 | Protected |
| 021 87 | Protected |
| 021 88 | Protected |
| 021 89 | Protected |
| 021 90 | Protected |
| 021 91 | Protected |
| 021 92 | Protected |
| 021 93 | Protected |
| 021 94 | Protected |
| 021 95 | Protected |
| 021 96 | Protected |
| 021 97 | Protected |
| 021 98 | Protected |
| 021 99 | Protected |