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.
Most active assignees, all time — NPA 208
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 208-628 | 1XXX5XXX6XXX7XXX · 2 holders which blocks → | ZIPLY FIBER IDAHO, LLC DBA ZIPLY FIBER | 4427 | RIGGINS | ID |
| — | 208-630 | 1XXX6XXX · 2 holders which blocks → | ZIPLY FIBER IDAHO, LLC DBA ZIPLY FIBER | 4427 | MCCALL | ID |
| — | 208-631 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | BOISE | ID |
| — | 208-632 | not yet reported which blocks → | MIDVALE TELEPHONE EXCHANGE, INC. | 2226 | WARM LAKE | ID |
| — | 208-633 | not yet reported which blocks → | MIDVALE TELEPHONE EXCHANGE, INC. | 2226 | YELLOWPINE | ID |
| — | 208-634 | not yet reported which blocks → | ZIPLY FIBER IDAHO, LLC DBA ZIPLY FIBER | 4427 | MCCALL | ID |
| — | 208-635 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ID | 7558 | HAYDENLAKE | ID |
| — | 208-636 | not yet reported which blocks → | MIDVALE TELEPHONE EXCHANGE, INC. | 2226 | WARREN | ID |
| — | 208-637 | 3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-638 | none assigned yet which blocks → | ALBION TELEPHONE CO. DBA ATC COMMUNICATIONS | 2213 | ELBA | ID |
| — | 208-640 | 2XXX7XXX8XXX which blocks → | T-MOBILE USA, INC. | 6529 | COERDALENE | ID |
| — | 208-641 | 1XXX5XXX6XXX7XXX · 2 holders which blocks → | TERRA NOVA TELECOM INC. | 145J | COERDALENE | ID |
| — | 208-642 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PAYETTE | ID |
| — | 208-644 | 0XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-645 | 8XXX which blocks → | ALBION TELEPHONE CO. DBA ATC COMMUNICATIONS | 2213 | MALTA | ID |
| — | 208-646 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-647 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ID | 7558 | BURLEY | ID |
| — | 208-648 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-650 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | BURLEY | ID |
| — | 208-651 | 2XXX4XXX5XXX7XXX8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | COERDALENE | ID |
| — | 208-652 | not yet reported which blocks → | FREMONT TELCOM CO. | 2222 | ASHTON | ID |
| — | 208-653 | not yet reported which blocks → | RURAL TEL CO | 2233 | BOISERIVER | ID |
| — | 208-654 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | BURLEY | ID |
| — | 208-655 | not yet reported which blocks → | FILER MUTUAL TEL CO | 2220 | HOLLISTER | ID |
| — | 208-656 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-657 | not yet reported which blocks → | MUD LAKE TELEPHONE COOPERATIVE ASSOCIATION, INC. | 2227 | MONTEVIEW | ID |
| — | 208-658 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-659 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | COERDALENE | ID |
| — | 208-660 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | COERDALENE | ID |
| — | 208-661 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | COERDALENE | ID |
| — | 208-662 | not yet reported which blocks → | MUD LAKE TELEPHONE COOPERATIVE ASSOCIATION, INC. | 2227 | HAMER | ID |
| — | 208-663 | not yet reported which blocks → | MUD LAKE TELEPHONE COOPERATIVE ASSOCIATION, INC. | 2227 | TERRETON | ID |
| — | 208-664 | not yet reported which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | COERDALENE | ID |
| — | 208-665 | not yet reported which blocks → | ZIPLY FIBER PACIFIC, LLC DBA ZIPLY FIBER | 015L | COERDALENE | ID |
| — | 208-666 | not yet reported which blocks → | ZIPLY FIBER PACIFIC, LLC DBA ZIPLY FIBER | 015L | COERDALENE | ID |
| — | 208-667 | not yet reported which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | COERDALENE | ID |
| — | 208-668 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4324 | CORA | ID |
| — | 208-670 | 6XXX7XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | BURLEY | ID |
| — | 208-672 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-673 | none assigned yet which blocks → | ALBION TELEPHONE CO. DBA ATC COMMUNICATIONS | 2213 | ALBION | ID |
| — | 208-674 | not yet reported which blocks → | FARMERS MUTUAL TEL. CO. | 2221 | NU ACRES | ID |
| — | 208-676 | 5XXX6XXX · 2 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | COERDALENE | ID |
| — | 208-677 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BURLEY | ID |
| — | 208-678 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BURLEY | ID |
| — | 208-679 | 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PROJECT MUTUAL TEL. COOP. ASSN., INC. - ID | 3816 | BURLEY | ID |
| — | 208-680 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | BLACKFOOT | ID |
| — | 208-681 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | BLACKFOOT | ID |
| — | 208-682 | 0XXX1XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | KELLOGG | ID |
| — | 208-683 | 7XXX8XXX · 2 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | BAYVIEW | ID |
| — | 208-684 | 0XXX1XXX2XXX6XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | BLACKFOOT | ID |
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.