NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 671-645 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-646 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-647 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-648 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-649 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-653 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-654 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-671 | not yet reported which blocks → | GU | |||
| — | 671-687 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 3945 | AGANA | GU |
| — | 671-688 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 3945 | AGANA | GU |
| — | 671-689 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 3945 | AGANA | GU |
| — | 671-700 | not yet reported which blocks → | GU | |||
| — | 671-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | GU |
| — | 671-726 | not yet reported which blocks → | PTI PACIFICA INC. DBA IT&E | 599E | AGANA | GU |
| — | 671-727 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | AGANA | GU |
| — | 671-734 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-735 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-788 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 3945 | AGANA | GU |
| — | 671-789 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | GU |
| — | 671-828 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3800 | AGANA | GU |
| — | 671-864 | not yet reported which blocks → | TELEGUAM HOLDINGS, LLC | 3922 | AGANA | GU |
| — | 671-888 | not yet reported which blocks → | CHOICE PHONE, LLC DBA ICONN | 1085 | AGANA | GU |
| — | 671-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | GU |
| — | 671-950 | not yet reported which blocks → | GU | |||
| — | 671-958 | not yet reported which blocks → | GU | |||
| — | 671-959 | not yet reported which blocks → | GU | |||
| — | 671-976 | not yet reported which blocks → | GU |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.