Phone numbers in Downers Grove, Illinois
Downers Grove has 77 phone prefixes in area codes 331, 630.
Biggest holders: AT&T (local phone), Verizon Wireless, Teleport Communications America. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 19%
- Local phone company 38%
- Internet / business phone carrier 39%
- Phone company 4%
Every prefix in Downers Grove
Search the first six digits of a number in this list. If it's here, the number started in Downers Grove with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 331-201 | Verizon Wireless | Mobile carrier | 2012 |
| 331-214 | Verizon Wireless | Mobile carrier | 2012 |
| 331-233 | Telnyx | Internet / business phone carrier | 2017 |
| 331-238 | Teleport Communications America | Internet / business phone carrier | 2017 |
| 331-251 | Verizon Wireless | Mobile carrier | 2012 |
| 331-260 | Teleport Communications America | Internet / business phone carrier | 2019 |
| 331-280 | Verizon Wireless | Mobile carrier | 2021 |
| 331-291 | Verizon Wireless | Mobile carrier | 2022 |
| 331-292 | Onvoy | Internet / business phone carrier | 2022 |
| 331-306 | Onvoy | Internet / business phone carrier | 2023 |
| 331-326 | Onvoy | Internet / business phone carrier | 2024 |
| 331-343 | Onvoy | Internet / business phone carrier | 2023 |
| 331-399 | Fractel | Internet / business phone carrier | 2021 |
| 331-481 | Verizon Wireless | Mobile carrier | 2008 |
| 331-625 | Verizon Wireless | Mobile carrier | 2009 |
| 331-631 | Onvoy | Internet / business phone carrier | 2022 |
| 331-775 | Comcast | Internet / business phone carrier | 2016 |
| 331-777 | Verizon Wireless | Mobile carrier | 2010 |
| 331-801 | Teleport Communications America | Internet / business phone carrier | 2014 |
| 331-903 | AT&T Enterprises | Phone company | 2014 |
| 331-998 | Verizon Wireless | Mobile carrier | 2015 |
| 630-241 | AT&T (local phone) | Local phone company | – |
| 630-271 | AT&T (local phone) | Local phone company | – |
| 630-275 | AT&T (local phone) | Local phone company | – |
| 630-297 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-310 | Rcn Telecom Services Of Illinios | Phone company | – |
| 630-322 | AT&T (local phone) | Local phone company | – |
| 630-324 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-353 | AT&T (local phone) | Local phone company | – |
| 630-390 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-395 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-427 | AT&T (local phone) | Local phone company | – |
| 630-432 | Verizon Wireless | Mobile carrier | 2008 |
| 630-434 | AT&T (local phone) | Local phone company | – |
| 630-435 | AT&T (local phone) | Local phone company | – |
| 630-437 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 630-441 | Teleport Communications America | Internet / business phone carrier | – |
| 630-442 | Teleport Communications America | Internet / business phone carrier | – |
| 630-487 | Verizon Wireless | Mobile carrier | 2007 |
| 630-493 | AT&T (local phone) | Local phone company | – |
| 630-512 | AT&T (local phone) | Local phone company | – |
| 630-515 | AT&T (local phone) | Local phone company | – |
| 630-541 | Teleport Communications America | Internet / business phone carrier | – |
| 630-598 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-663 | AT&T (local phone) | Local phone company | – |
| 630-695 | AT&T Mobility | Mobile carrier | 2026 |
| 630-719 | AT&T (local phone) | Local phone company | – |
| 630-724 | AT&T (local phone) | Local phone company | – |
| 630-725 | AT&T (local phone) | Local phone company | – |
| 630-729 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-737 | AT&T (local phone) | Local phone company | – |
| 630-743 | Teleport Communications America | Internet / business phone carrier | – |
| 630-769 | AT&T (local phone) | Local phone company | – |
| 630-786 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-795 | AT&T (local phone) | Local phone company | – |
| 630-796 | Bandwidth | Internet / business phone carrier | 2010 |
| 630-810 | AT&T (local phone) | Local phone company | – |
| 630-824 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 630-829 | AT&T (local phone) | Local phone company | – |
| 630-852 | AT&T (local phone) | Local phone company | – |
| 630-869 | Peerless Network Of Illinois | Internet / business phone carrier | 2008 |
| 630-874 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-895 | Verizon Wireless | Mobile carrier | 2023 |
| 630-910 | AT&T (local phone) | Local phone company | – |
| 630-929 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-944 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-960 | AT&T (local phone) | Local phone company | – |
| 630-963 | AT&T (local phone) | Local phone company | – |
| 630-964 | AT&T (local phone) | Local phone company | – |
| 630-967 | First Communications | Phone company | 2004 |
| 630-968 | AT&T (local phone) | Local phone company | – |
| 630-969 | AT&T (local phone) | Local phone company | – |
| 630-971 | AT&T (local phone) | Local phone company | – |
| 630-981 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-985 | AT&T (local phone) | Local phone company | – |
| 630-991 | AT&T Mobility | Mobile carrier | 2004 |
| 630-996 | AT&T Mobility | Mobile carrier | 2025 |
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.