Since the introduction of Mobile number portability in 2002, the prefix (here 01577) is no longer a indicator for the mobile radio network.
Originally, the phone code 01577 was assigned to O2 (ehemals E-Plus). Currently, however, this can be used or be active in a different german network.
The same applies to the provider. Originally to O2 (ehemals E-Plus) assigned can this number theoretically be in use at every other german mobile provider.
| 01577 | Phone Code: Classic spelling |
|---|---|
| +491577 | With german country code +49 |
| +49(0)1577 | With country code +49 and optional 0 |
| 00491577 | With country code 0049 |
| (01577) | Telephone code in brackets |
| 01577- | With hyphen as separator to the phone number |
| 01577/ | With slash as a separator to the phone number |
To call a mobile number with the prefix 01577 from abroad, you must dial the area code for Germany (+49 and 0049) at the front. In addition, you have to remove the 0 from mobile phone code. The final phone number then has the following form: +491577...