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 907
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 907-221 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | BIRCHCREEK | AK |
| — | 907-237 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | NEWTOK | AK |
| — | 907-238 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | ALAKANUK | AK |
| — | 907-256 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TUNTUTULIK | AK |
| — | 907-293 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | NIKOLAI | AK |
| — | 907-295 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | LIVENGOOD | AK |
| — | 907-298 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TAKOTNA | AK |
| — | 907-358 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | RAMPART | AK |
| — | 907-427 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TOKSOOKBAY | AK |
| — | 907-438 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | ST MARYS | AK |
| — | 907-467 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CHUATHBALK | AK |
| — | 907-477 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | KASIGLUK | AK |
| — | 907-478 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | STEVENSVLG | AK |
| — | 907-493 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TOGIAK | AK |
| — | 907-498 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | SHELDON PT | AK |
| — | 907-520 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CENTRAL | AK |
| — | 907-525 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TWIN HILLS | AK |
| — | 907-526 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | LIME VLG | AK |
| — | 907-527 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | NUNAPTCHUK | AK |
| — | 907-536 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | EEK | AK |
| — | 907-549 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | PILOT STA | AK |
| — | 907-553 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | ATMAUTLUAK | AK |
| — | 907-556 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | QUINHAGAK | AK |
| — | 907-557 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | KONGIGANAK | AK |
| — | 907-558 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | SCAMMONBAY | AK |
| — | 907-573 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CHENEGABAY | AK |
| — | 907-584 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | RUSSINMSSN | AK |
| — | 907-587 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | ARCTIC VLG | AK |
| — | 907-588 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | KWIGILLNGK | AK |
| — | 907-589 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | NAPAKIAK | AK |
| — | 907-591 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | MOUNTANVLG | AK |
| — | 907-628 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | BEAVER | AK |
| — | 907-647 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | NIGHTMUTE | AK |
| — | 907-652 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TUNUNAK | AK |
| — | 907-672 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | MANLYHTSPG | AK |
| — | 907-674 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | MINCHUMINA | AK |
| — | 907-679 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | MARSHALL | AK |
| — | 907-695 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TULUKSAK | AK |
| — | 907-737 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | NAPASKIAK | AK |
| — | 907-757 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | KWETHLUK | AK |
| — | 907-758 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | HOOPER BAY | AK |
| — | 907-765 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | AKIAK | AK |
| — | 907-798 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | MINTO | AK |
| — | 907-825 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | AKIACHAK | AK |
| — | 907-827 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | MEKORYUK | AK |
| — | 907-848 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CHALKYITSK | AK |
| — | 907-849 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | VENETIE | AK |
| — | 907-858 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CHEVAK | AK |
| — | 907-867 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CHEFORNAK | AK |
| — | 907-896 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | KIPNUK | AK |
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.