All Level 3 Communications support phone numbers are listed below, including support phone number(s), support phone number(s), support phone number(s), etc. You can also get Level 3 Communications support via email, social networks, help center, or directly check all the customer service contacts of Level 3 Communications.
| Support phone number | +1 720 888 1000 |
| Support phone number | +1 877 253 8353 |
| Support phone number | +1 303 566 1319 |