Phone numbers in Cicero, Illinois
Cicero has 34 phone prefixes in area codes 464, 708.
Biggest holders: Verizon Wireless, AT&T (local phone), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 15%
- Internet / business phone carrier 50%
- Phone company 6%
Every prefix in Cicero
Search the first six digits of a number in this list. If it's here, the number started in Cicero with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 464-204 | Verizon Wireless | Mobile carrier | 2022 |
| 464-206 | Verizon Wireless | Mobile carrier | 2022 |
| 464-219 | Onvoy | Internet / business phone carrier | 2023 |
| 464-245 | Onvoy | Internet / business phone carrier | 2024 |
| 464-258 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 464-259 | Onvoy | Internet / business phone carrier | 2025 |
| 464-266 | Onvoy | Internet / business phone carrier | 2023 |
| 464-300 | Fractel | Internet / business phone carrier | 2021 |
| 464-927 | TON80 Communications | Internet / business phone carrier | 2022 |
| 708-219 | Verizon Wireless | Mobile carrier | 2021 |
| 708-222 | AT&T (local phone) | Local phone company | – |
| 708-298 | Comcast | Internet / business phone carrier | – |
| 708-329 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 708-348 | Bandwidth | Internet / business phone carrier | 2022 |
| 708-391 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 708-413 | Bandwidth | Internet / business phone carrier | 2022 |
| 708-416 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 708-464 | Eon Telecom | Phone company | 2024 |
| 708-477 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 708-490 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 708-500 | Verizon Wireless | Mobile carrier | 2023 |
| 708-553 | Exiant Communications | Phone company | 2018 |
| 708-621 | Verizon Wireless | Mobile carrier | 2020 |
| 708-652 | AT&T (local phone) | Local phone company | – |
| 708-656 | AT&T (local phone) | Local phone company | – |
| 708-683 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 708-723 | Verizon Wireless | Mobile carrier | 2021 |
| 708-735 | Teleport Communications America | Internet / business phone carrier | – |
| 708-780 | AT&T (local phone) | Local phone company | – |
| 708-815 | Verizon Wireless | Mobile carrier | 2021 |
| 708-850 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 708-863 | AT&T (local phone) | Local phone company | – |
| 708-943 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 708-982 | MetroPCS (T-Mobile) | Mobile carrier | 2014 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.