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
Sep 2026
Aug 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2005-01-19 | 231-774 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | ACD TELECOM, INC. - MI | 3535 | INTERLOCHN | MI |
| 2005-01-19 | 231-805 | 1XXX7XXX · 2 holders which blocks → | ACD TELECOM, INC. - MI | 3535 | KALEVA | MI |
| 2005-01-19 | 231-994 | 0–9 XXXall 10 · 6 holders which blocks → | ACD TELECOM, INC. - MI | 3535 | LKLEELANAU | MI |
| 2005-01-19 | 905-200 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Castlemore | — |
| 2005-01-19 | 905-255 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Malton | — |
| 2005-01-19 | 905-400 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Gormley | — |
| 2005-01-19 | 905-402 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Cooksville | — |
| 2005-01-19 | 905-500 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brampton | — |
| 2005-01-19 | 905-585 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Maple | — |
| 2005-01-19 | 905-663 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Woodbridge | — |
| 2005-01-19 | 905-700 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Keswick | — |
| 2005-01-18 | 229-303 | 0–9 XXXall 10 · 2 holders which blocks → | MCC TELEPHONY LLC | 593K | ALAPAHA | GA |
| 2005-01-18 | 320-464 | 4XXX6XXX which blocks → | ONVOY, LLC - MN | 184D | COSMOS | MN |
| 2005-01-18 | 519-280 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2005-01-18 | 607-472 | 2XXX4XXX5XXX6XXX · 2 holders which blocks → | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | BINGHAMTON | NY |
| 2005-01-18 | 678-703 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NW | GA |
| 2005-01-18 | 678-955 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NE | GA |
| 2005-01-18 | 678-970 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NE | GA |
| 2005-01-18 | 706-815 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | COLUMBUS | GA |
| 2005-01-18 | 816-949 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 TELECOM OF KANSAS CITY, LLC - MO | 7589 | KANSASCITY | MO |
| 2005-01-18 | 845-772 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PINEISLAND | NY |
| 2005-01-18 | 905-292 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Richmond Hill | — |
| 2005-01-18 | 905-300 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Unionville | — |
| 2005-01-18 | 905-350 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Markham | — |
| 2005-01-18 | 905-395 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Aurora | — |
| 2005-01-18 | 905-398 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oak Ridges | — |
| 2005-01-18 | 905-710 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Newmarket | — |
| 2005-01-18 | 913-273 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 TELECOM OF KANSAS CITY, LLC - KS | 7014 | KANSASCITY | KS |
| 2005-01-17 | 909-354 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ONTARIO | CA |
| 2005-01-14 | 228-456 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | BILOXI | MS |
| 2005-01-14 | 228-567 | 2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PASCAGOULA | MS |
| 2005-01-14 | 228-678 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | GULFPORT | MS |
| 2005-01-14 | 250-859 | not yet reported which blocks → | Bell Mobility | 6574 | Kelowna | — |
| 2005-01-14 | 256-400 | 0–9 XXXall 10 · 3 holders which blocks → | POWERTEL BIRMINGHAM LICENSES, INC. | 7475 | ALBERTVL | AL |
| 2005-01-14 | 418-930 | not yet reported which blocks → | Bell Mobility | 6574 | Quebec | — |
| 2005-01-14 | 514-754 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2005-01-14 | 778-233 | not yet reported which blocks → | Bell Mobility | 6574 | Vancouver | — |
| 2005-01-14 | 780-228 | not yet reported which blocks → | Bell Mobility | 6574 | Grande Prairie | — |
| 2005-01-14 | 780-952 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Edmonton | — |
| 2005-01-14 | 786-291 | 0–9 XXXall 10 · 2 holders which blocks → | FUSION CLOUD SERVICES, LLC | 206A | PERRINE | FL |
| 2005-01-14 | 812-655 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AURORA | IN |
| 2005-01-14 | 817-584 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-01-14 | 912-315 | not yet reported which blocks → | BRIGHTSPEED OF GEORGIA, LLC | 0356 | RICHMONDHL | GA |
| 2005-01-14 | 912-435 | not yet reported which blocks → | BRIGHTSPEED OF GEORGIA, LLC | 0356 | HINESVILLE | GA |
| 2005-01-13 | 541-215 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PENDLETON | OR |
| 2005-01-13 | 670-878 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | SAIPAN | — |
| 2005-01-13 | 671-878 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | AGANA | GU |
| 2005-01-13 | 715-680 | 0–9 XXXall 10 · 7 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARATHON | WI |
| 2005-01-13 | 864-372 | 0–9 XXXall 10 · 7 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | LIBERTY | SC |
| 2005-01-13 | 864-402 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | PELZER | SC |
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.