NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
8X8, INC. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 27
ONVOY, LLC - NJ 20
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2004-03-18 403-451 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 8377 Calgary —
2004-03-18 407-329 0–9 XXXall 10 · 5 holders which blocks → SMART CITY SOLUTIONS II, LLC DBA SMART CITY METRO 8105 WKISSIMMEE FL
2004-03-18 450-203 not yet reported which blocks → TELUS Mobility 8303 Bedford —
2004-03-18 605-214 8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 HARISBGTEA SD
2004-03-18 806-977 6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOOKER TX
2004-03-17 205-643 0–9 XXXwhole prefix which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 BIRMINGHAM AL
2004-03-17 229-327 2XXX3XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CAIRO GA
2004-03-17 408-851 0–9 XXXwhole prefix which blocks → PACIFIC BELL 9740 SNJS WEST CA
2004-03-17 740-241 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BYESVILLE OH
2004-03-17 740-565 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DRESDEN OH
2004-03-17 870-796 3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 PRESCOTT AR
2004-03-17 920-383 1XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → NET LEC, INC. 6183 NEENAH WI
2004-03-16 304-307 0–9 XXXall 10 · 9 holders which blocks → FIBERNET, LLC - WV 4095 MADISON WV
2004-03-16 304-616 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MARTINSBG WV
2004-03-16 304-777 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHEAT LAKE WV
2004-03-16 318-316 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JENA LA
2004-03-16 318-363 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HEBRON LA
2004-03-16 318-477 7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MANGHAM LA
2004-03-16 318-622 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OAK RIDGE LA
2004-03-16 318-837 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WISNER LA
2004-03-16 330-246 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CORTLAND OH
2004-03-16 336-258 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ELKIN NC
2004-03-16 337-200 2XXX4XXX5XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BASILE LA
2004-03-16 337-227 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 CHURCH PT LA
2004-03-16 337-301 1XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 ELTON LA
2004-03-16 337-317 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE QUINCY LA
2004-03-16 337-336 4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 VL PLATTE LA
2004-03-16 337-358 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 IOWA LA
2004-03-16 337-930 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 WELSH LA
2004-03-16 337-977 7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 OBERLIN LA
2004-03-16 337-998 2XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 KINDER LA
2004-03-16 662-998 3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 YAZOO CITY MS
2004-03-16 715-596 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PESHTIGO WI
2004-03-16 715-621 1XXX2XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRESQUE IS WI
2004-03-16 803-520 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J LEXINGTON SC
2004-03-16 919-346 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J FUQUAYVRIN NC
2004-03-16 919-435 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J WAKEFOREST NC
2004-03-15 214-705 0–9 XXXall 10 · 3 holders which blocks → SOUTHWESTERN BELL 9533 FRISCO TX
2004-03-15 219-472 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MERRILLVL IN
2004-03-15 228-337 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2004-03-15 229-325 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FITZGERALD GA
2004-03-15 404-468 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2004-03-15 416-901 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2004-03-15 517-200 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD MI
2004-03-15 615-471 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J LAVERGNE TN
2004-03-15 615-553 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J MT JULIET TN
2004-03-15 724-636 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SLIPPERYRK PA
2004-03-15 724-886 5XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOBTOWN PA
2004-03-15 803-528 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2004-03-15 845-636 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MAYBROOK NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.