NumberResearchRecent prefix assignments
341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
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, last 30 days
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 808-543 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-544 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-545 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-546 | 0XXX9XXX which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-547 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-548 | 1XXX8XXX9XXX which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-549 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-550 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-551 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HONOLULU | HI |
| — | 808-552 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | KAUNAKAKAI | HI |
| — | 808-553 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | KAUNAKAKAI | HI |
| — | 808-554 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HONOLULU | HI |
| — | 808-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | HI |
| — | 808-557 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | HILO | HI |
| — | 808-558 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | KAUNAKAKAI | HI |
| — | 808-559 | 1XXX2XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → | ONVOY, LLC - HI | 210H | LANAI CITY | HI |
| — | 808-560 | not yet reported which blocks → | SANDWICH ISLES COMMUNICATIONS, INC. | 3021 | KAUNAKAKAI | HI |
| — | 808-561 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| — | 808-563 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - HI | 6516 | LANAI CITY | HI |
| — | 808-564 | not yet reported which blocks → | LEVEL 3 TELECOM OF HAWAII, LP - HI | 8297 | HONOLULU | HI |
| — | 808-565 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | LANAI CITY | HI |
| — | 808-566 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-567 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | KAUNAKAKAI | HI |
| — | 808-568 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | LANAI CITY | HI |
| — | 808-569 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-571 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-572 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | WAILUKU | HI |
| — | 808-573 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | WAILUKU | HI |
| — | 808-574 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-575 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | WAILUKU | HI |
| — | 808-576 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-577 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-578 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-579 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | WAILUKU | HI |
| — | 808-581 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-584 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
| — | 808-585 | 1XXX which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-586 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-587 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-588 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-589 | 6XXX7XXX8XXX9XXX · 2 holders which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-590 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-591 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-592 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-593 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-594 | 2XXX3XXX6XXX7XXX8XXX9XXX which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-595 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-596 | not yet reported which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-597 | 0XXX4XXX6XXX7XXX · 2 holders which blocks → | HAWAIIAN TELCOM, INC. - HI | 3100 | HONOLULU | HI |
| — | 808-598 | not yet reported which blocks → | SPOK, INC. | 6630 | HONOLULU | HI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.