Phone numbers in Agana, Guam
Agana has 95 phone prefixes in area code 671.
Biggest holders: Teleguam Holdings, Pti Pacifica, Guam Wireless Telephone. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 15%
- Phone company 85%
Every prefix in Agana
Search the first six digits of a number in this list. If it's here, the number started in Agana with the carrier shown. If it isn't, check the Guam page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 671-201 | Teleguam Holdings | Phone company | 2023 |
| 671-300 | Pacific Data Systems | Phone company | 2007 |
| 671-333 | Teleguam Holdings | Phone company | – |
| 671-339 | Teleguam Holdings | Phone company | – |
| 671-343 | Teleguam Holdings | Phone company | – |
| 671-344 | Teleguam Holdings | Phone company | – |
| 671-349 | Teleguam Holdings | Phone company | – |
| 671-355 | Teleguam Holdings | Phone company | – |
| 671-362 | Teleguam Holdings | Phone company | – |
| 671-366 | Teleguam Holdings | Phone company | – |
| 671-400 | Pacific Data Systems | Phone company | 2010 |
| 671-456 | Pti Pacifica | Phone company | – |
| 671-471 | Teleguam Holdings | Phone company | – |
| 671-472 | Teleguam Holdings | Phone company | – |
| 671-473 | Teleguam Holdings | Phone company | – |
| 671-474 | Teleguam Holdings | Phone company | – |
| 671-475 | Teleguam Holdings | Phone company | – |
| 671-477 | Teleguam Holdings | Phone company | – |
| 671-478 | Teleguam Holdings | Phone company | – |
| 671-479 | Teleguam Holdings | Phone company | – |
| 671-480 | Teleguam Holdings | Phone company | 2015 |
| 671-482 | Teleguam Holdings | Phone company | – |
| 671-483 | Teleguam Holdings | Phone company | – |
| 671-484 | Teleguam Holdings | Phone company | 2022 |
| 671-485 | Teleguam Holdings | Phone company | 2023 |
| 671-486 | Teleguam Holdings | Phone company | – |
| 671-487 | Teleguam Holdings | Phone company | 2009 |
| 671-488 | Teleguam Holdings | Phone company | 2002 |
| 671-489 | Teleguam Holdings | Phone company | 2011 |
| 671-562 | Teleguam Holdings | Phone company | – |
| 671-563 | Teleguam Holdings | Phone company | – |
| 671-564 | Teleguam Holdings | Phone company | – |
| 671-565 | Teleguam Holdings | Phone company | – |
| 671-588 | Teleguam Holdings | Phone company | 2009 |
| 671-632 | Teleguam Holdings | Phone company | – |
| 671-633 | Teleguam Holdings | Phone company | – |
| 671-634 | Teleguam Holdings | Phone company | – |
| 671-635 | Teleguam Holdings | Phone company | – |
| 671-637 | Teleguam Holdings | Phone company | – |
| 671-638 | Teleguam Holdings | Phone company | – |
| 671-642 | Teleguam Holdings | Phone company | – |
| 671-644 | Teleguam Holdings | Phone company | – |
| 671-645 | Teleguam Holdings | Phone company | – |
| 671-646 | Teleguam Holdings | Phone company | – |
| 671-647 | Teleguam Holdings | Phone company | – |
| 671-648 | Teleguam Holdings | Phone company | – |
| 671-649 | Teleguam Holdings | Phone company | – |
| 671-653 | Teleguam Holdings | Phone company | – |
| 671-654 | Teleguam Holdings | Phone company | – |
| 671-678 | Pti Pacifica | Phone company | 2002 |
| 671-682 | Guam Wireless Telephone | Mobile carrier | 2016 |
| 671-683 | Guam Wireless Telephone | Mobile carrier | 2016 |
| 671-685 | Guam Wireless Telephone | Mobile carrier | 2009 |
| 671-686 | Guam Wireless Telephone | Mobile carrier | 2001 |
| 671-687 | Guam Wireless Telephone | Mobile carrier | – |
| 671-688 | Guam Wireless Telephone | Mobile carrier | – |
| 671-689 | Guam Wireless Telephone | Mobile carrier | – |
| 671-707 | Pti Pacifica | Phone company | 2009 |
| 671-726 | IT&E | Phone company | – |
| 671-727 | Pti Pacifica | Phone company | – |
| 671-734 | Teleguam Holdings | Phone company | – |
| 671-735 | Teleguam Holdings | Phone company | – |
| 671-747 | Pti Pacifica | Phone company | 2012 |
| 671-777 | Pti Pacifica | Phone company | 2001 |
| 671-787 | Guam Wireless Telephone | Mobile carrier | 2002 |
| 671-788 | Guam Wireless Telephone | Mobile carrier | – |
| 671-789 | Teleguam Holdings | Phone company | – |
| 671-797 | Pti Pacifica | Phone company | 2009 |
| 671-828 | Teleguam Holdings | Phone company | – |
| 671-838 | Pti Pacifica | Phone company | 2004 |
| 671-848 | Pti Pacifica | Phone company | 2008 |
| 671-858 | Pti Pacifica | Phone company | 2008 |
| 671-864 | Teleguam Holdings | Phone company | – |
| 671-865 | Teleguam Holdings | Phone company | 2025 |
| 671-867 | Teleguam Holdings | Phone company | 2024 |
| 671-868 | Pti Pacifica | Phone company | 2003 |
| 671-878 | Pti Pacifica | Phone company | 2005 |
| 671-888 | Iconn | Phone company | – |
| 671-898 | Iconn | Phone company | 2004 |
| 671-922 | IT&E | Phone company | 2003 |
| 671-929 | Guam Wireless Telephone | Mobile carrier | 2008 |
| 671-967 | Pti Pacifica | Phone company | 2009 |
| 671-969 | Docomo Pacific | Phone company | 2007 |
| 671-971 | Pti Pacifica | Phone company | 2011 |
| 671-972 | Pti Pacifica | Phone company | 2012 |
| 671-977 | Pti Pacifica | Phone company | 2009 |
| 671-979 | IT&E | Phone company | 2009 |
| 671-987 | Pti Pacifica | Phone company | 2005 |
| 671-988 | Guam Wireless Telephone | Mobile carrier | 2003 |
| 671-989 | Docomo Pacific | Phone company | 2010 |
| 671-991 | Guam Wireless Telephone | Mobile carrier | 2025 |
| 671-996 | Guam Wireless Telephone | Mobile carrier | 2025 |
| 671-997 | Pti Pacifica | Phone company | 2010 |
| 671-998 | Pti Pacifica | Phone company | 2010 |
| 671-999 | Guam Wireless Telephone | 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.