NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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.
Most active assignees, all time — NPA 670
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2018-04-20 | 670-284 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2013-01-31 | 670-783 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2010-07-02 | 670-785 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2008-10-10 | 670-848 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2008-10-10 | 670-858 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2007-02-26 | 670-789 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2005-06-01 | 670-237 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| 2005-04-05 | 670-989 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 4974 | SAIPAN | — |
| 2005-01-25 | 670-285 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2005-01-13 | 670-878 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2004-09-20 | 670-488 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 4974 | TINIAN | — |
| 2004-09-17 | 670-588 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 4974 | ROTA | — |
| 2004-08-25 | 670-838 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2004-08-24 | 670-898 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2003-03-10 | 670-868 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2002-07-30 | 670-888 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2002-05-17 | 670-484 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 4974 | SAIPAN | — |
| — | 670-211 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-233 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-234 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-235 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-236 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-256 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-286 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| — | 670-287 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| — | 670-288 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-311 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-321 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-322 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-323 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-328 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-411 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-433 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | TINIAN | — |
| — | 670-483 | not yet reported which blocks → | GUAM WIRELESS TELEPHONE COMPANY, LLC | 4974 | SAIPAN | — |
| — | 670-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-532 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | ROTA | — |
| — | 670-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | — |
| — | 670-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-664 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-670 | not yet reported which blocks → | — | |||
| — | 670-682 | not yet reported which blocks → | MICRONESIAN TELECOMMUNICATIONS CORPORATION | 3700 | SAIPAN | — |
| — | 670-700 | not yet reported which blocks → | — | |||
| — | 670-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-788 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| — | 670-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | — |
| — | 670-950 | not yet reported which blocks → | — | |||
| — | 670-958 | not yet reported which blocks → | — | |||
| — | 670-959 | not yet reported which blocks → | — | |||
| — | 670-976 | not yet reported which blocks → | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.