Phone numbers in Georgetown, Texas
Georgetown has 50 phone prefixes in area codes 512, 737.
Biggest holders: Frontier, T-Mobile (including Sprint), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 36%
- Local phone company 22%
- Internet / business phone carrier 38%
- Phone company 4%
Every prefix in Georgetown
Search the first six digits of a number in this list. If it's here, the number started in Georgetown with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 512-240 | Grande Communications Networks | Phone company | – |
| 512-316 | AT&T Mobility | Mobile carrier | 2022 |
| 512-508 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-509 | Teleport Communications America | Internet / business phone carrier | – |
| 512-591 | Teleport Communications America | Internet / business phone carrier | – |
| 512-630 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 512-635 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-639 | Verizon Wireless | Mobile carrier | – |
| 512-677 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-686 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-688 | Csc Voice | Internet / business phone carrier | 2013 |
| 512-713 | Level 3 (Lumen) | Internet / business phone carrier | 2015 |
| 512-763 | Frontier | Local phone company | – |
| 512-818 | AT&T Mobility | Mobile carrier | – |
| 512-819 | Frontier | Local phone company | – |
| 512-843 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-863 | Frontier | Local phone company | – |
| 512-864 | Frontier | Local phone company | – |
| 512-868 | Frontier | Local phone company | – |
| 512-869 | Frontier | Local phone company | – |
| 512-876 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 512-882 | Onvoy | Internet / business phone carrier | 2022 |
| 512-887 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 512-930 | Frontier | Local phone company | – |
| 512-931 | Frontier | Local phone company | – |
| 512-942 | Frontier | Local phone company | – |
| 512-943 | Frontier | Local phone company | – |
| 512-948 | Frontier | Local phone company | – |
| 512-966 | AT&T Mobility | Mobile carrier | – |
| 737-215 | Verizon Wireless | Mobile carrier | 2016 |
| 737-240 | Verizon Wireless | Mobile carrier | 2016 |
| 737-245 | Onvoy | Internet / business phone carrier | 2018 |
| 737-253 | Vonage America | Internet / business phone carrier | 2018 |
| 737-275 | Bandwidth | Internet / business phone carrier | 2020 |
| 737-290 | Bandwidth | Internet / business phone carrier | 2021 |
| 737-314 | Verizon Wireless | Mobile carrier | 2022 |
| 737-340 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 737-349 | Verizon Wireless | Mobile carrier | 2022 |
| 737-356 | Fractel | Internet / business phone carrier | 2019 |
| 737-371 | Commio | Internet / business phone carrier | 2023 |
| 737-383 | Onvoy | Internet / business phone carrier | 2024 |
| 737-403 | Verizon Wireless | Mobile carrier | 2024 |
| 737-425 | AT&T Mobility | Mobile carrier | 2025 |
| 737-441 | Onvoy | Internet / business phone carrier | 2026 |
| 737-444 | Foremost Telecommunications | Phone company | 2013 |
| 737-445 | Teleport Communications America | Internet / business phone carrier | 2026 |
| 737-667 | Fractel | Internet / business phone carrier | 2020 |
| 737-738 | Onvoy | Internet / business phone carrier | 2021 |
| 737-775 | Onvoy | Internet / business phone carrier | 2024 |
| 737-808 | Bandwidth | Internet / business phone carrier | 2015 |
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.