Phone numbers in Hinsdale, Illinois
Hinsdale has 120 phone prefixes in area codes 312, 331, 630, 708, 847.
Biggest holders: AT&T Mobility, AT&T (local phone), Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 47%
- Local phone company 28%
- Internet / business phone carrier 24%
- Phone company 2%
Every prefix in Hinsdale
Search the first six digits of a number in this list. If it's here, the number started in Hinsdale with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 312-301 | AT&T Mobility | Mobile carrier | – |
| 312-304 | AT&T Mobility | Mobile carrier | – |
| 312-314 | AT&T Mobility | Mobile carrier | – |
| 312-352 | AT&T Mobility | Mobile carrier | – |
| 312-510 | AT&T Mobility | Mobile carrier | – |
| 312-531 | AT&T Mobility | Mobile carrier | – |
| 312-699 | AT&T Mobility | Mobile carrier | – |
| 312-749 | AT&T Mobility | Mobile carrier | – |
| 312-816 | AT&T Mobility | Mobile carrier | – |
| 312-844 | AT&T Mobility | Mobile carrier | – |
| 312-990 | AT&T Mobility | Mobile carrier | – |
| 331-264 | Level 3 (Lumen) | Internet / business phone carrier | 2020 |
| 331-271 | Onvoy | Internet / business phone carrier | 2020 |
| 331-282 | Onvoy | Internet / business phone carrier | 2021 |
| 331-289 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 331-299 | Fractel | Internet / business phone carrier | 2021 |
| 331-317 | Commio | Internet / business phone carrier | 2024 |
| 630-203 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-207 | AT&T Mobility | Mobile carrier | – |
| 630-209 | AT&T Mobility | Mobile carrier | – |
| 630-214 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-218 | AT&T (local phone) | Local phone company | – |
| 630-230 | AT&T (local phone) | Local phone company | – |
| 630-242 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-247 | AT&T Mobility | Mobile carrier | – |
| 630-272 | AT&T Mobility | Mobile carrier | – |
| 630-280 | AT&T Mobility | Mobile carrier | – |
| 630-286 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-288 | Teleport Communications America | Internet / business phone carrier | – |
| 630-320 | Teleport Communications America | Internet / business phone carrier | – |
| 630-321 | AT&T (local phone) | Local phone company | – |
| 630-323 | AT&T (local phone) | Local phone company | – |
| 630-325 | AT&T (local phone) | Local phone company | – |
| 630-366 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-368 | AT&T (local phone) | Local phone company | – |
| 630-371 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-382 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-408 | AT&T Mobility | Mobile carrier | – |
| 630-413 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-418 | AT&T Mobility | Mobile carrier | – |
| 630-455 | AT&T (local phone) | Local phone company | – |
| 630-468 | Rcn Telecom Services Of Illinios | Phone company | – |
| 630-472 | AT&T (local phone) | Local phone company | – |
| 630-481 | Teleport Communications America | Internet / business phone carrier | – |
| 630-484 | AT&T Mobility | Mobile carrier | – |
| 630-522 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-528 | First Communications | Phone company | – |
| 630-537 | AT&T (local phone) | Local phone company | 2010 |
| 630-560 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-568 | Teleport Communications America | Internet / business phone carrier | – |
| 630-570 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 630-571 | AT&T (local phone) | Local phone company | – |
| 630-572 | AT&T (local phone) | Local phone company | – |
| 630-573 | AT&T (local phone) | Local phone company | – |
| 630-574 | AT&T (local phone) | Local phone company | – |
| 630-575 | AT&T (local phone) | Local phone company | – |
| 630-581 | Teleport Communications America | Internet / business phone carrier | – |
| 630-586 | AT&T (local phone) | Local phone company | – |
| 630-590 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-601 | AT&T Mobility | Mobile carrier | – |
| 630-623 | AT&T (local phone) | Local phone company | – |
| 630-632 | AT&T Mobility | Mobile carrier | – |
| 630-642 | AT&T Mobility | Mobile carrier | – |
| 630-645 | AT&T (local phone) | Local phone company | – |
| 630-654 | AT&T (local phone) | Local phone company | – |
| 630-655 | AT&T (local phone) | Local phone company | – |
| 630-684 | AT&T (local phone) | Local phone company | – |
| 630-686 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-703 | AT&T Mobility | Mobile carrier | – |
| 630-706 | AT&T (local phone) | Local phone company | – |
| 630-716 | Teleport Communications America | Internet / business phone carrier | – |
| 630-722 | AT&T (local phone) | Local phone company | – |
| 630-734 | AT&T (local phone) | Local phone company | – |
| 630-756 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-789 | AT&T (local phone) | Local phone company | – |
| 630-794 | AT&T (local phone) | Local phone company | – |
| 630-819 | AT&T Mobility | Mobile carrier | – |
| 630-822 | AT&T Mobility | Mobile carrier | – |
| 630-828 | Teleport Communications America | Internet / business phone carrier | – |
| 630-850 | AT&T (local phone) | Local phone company | – |
| 630-856 | AT&T (local phone) | Local phone company | – |
| 630-861 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-887 | AT&T (local phone) | Local phone company | – |
| 630-891 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 630-908 | AT&T Mobility | Mobile carrier | – |
| 630-915 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 630-920 | AT&T (local phone) | Local phone company | – |
| 630-928 | AT&T (local phone) | Local phone company | – |
| 630-954 | AT&T (local phone) | Local phone company | – |
| 630-974 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-986 | AT&T (local phone) | Local phone company | – |
| 630-990 | AT&T (local phone) | Local phone company | – |
| 708-207 | AT&T Mobility | Mobile carrier | – |
| 708-214 | AT&T Mobility | Mobile carrier | – |
| 708-256 | AT&T Mobility | Mobile carrier | – |
| 708-280 | AT&T Mobility | Mobile carrier | – |
| 708-285 | AT&T Mobility | Mobile carrier | – |
| 708-408 | AT&T Mobility | Mobile carrier | – |
| 708-519 | AT&T Mobility | Mobile carrier | – |
| 708-528 | AT&T Mobility | Mobile carrier | – |
| 708-601 | AT&T Mobility | Mobile carrier | – |
| 708-642 | AT&T Mobility | Mobile carrier | – |
| 708-703 | AT&T Mobility | Mobile carrier | – |
| 708-819 | AT&T Mobility | Mobile carrier | – |
| 708-822 | AT&T Mobility | Mobile carrier | – |
| 708-828 | AT&T Mobility | Mobile carrier | – |
| 708-908 | AT&T Mobility | Mobile carrier | – |
| 708-912 | AT&T Mobility | Mobile carrier | – |
| 847-207 | AT&T Mobility | Mobile carrier | – |
| 847-209 | AT&T Mobility | Mobile carrier | – |
| 847-280 | AT&T Mobility | Mobile carrier | – |
| 847-408 | AT&T Mobility | Mobile carrier | – |
| 847-528 | AT&T Mobility | Mobile carrier | – |
| 847-560 | AT&T Mobility | Mobile carrier | – |
| 847-601 | AT&T Mobility | Mobile carrier | – |
| 847-642 | AT&T Mobility | Mobile carrier | – |
| 847-703 | AT&T Mobility | Mobile carrier | – |
| 847-819 | AT&T Mobility | Mobile carrier | – |
| 847-822 | AT&T Mobility | Mobile carrier | – |
| 847-828 | AT&T Mobility | Mobile carrier | – |
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.