NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2019-03-08 332-209 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2019-03-08 405-504 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H MINCO OK
2019-03-08 434-666 0XXX1XXX2XXX6XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H CHARLOTSVL VA
2019-03-08 620-871 0XXX1XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → S & T COMMUNICATIONS, LLC - KS 5910 SCOTT CITY KS
2019-03-08 639-838 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Regina —
2019-03-08 984-247 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 RALEIGH NC
2019-03-08 986-201 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ID 808G CALDWELL ID
2019-03-07 206-867 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H SEATTLE WA
2019-03-07 385-296 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J MIDVALE UT
2019-03-07 434-500 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 BOYDTON VA
2019-03-07 434-686 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 BLACKSTONE VA
2019-03-07 434-837 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 KEYSVILLE VA
2019-03-07 442-305 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C PALMDESERT CA
2019-03-07 531-331 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - NE 549E MARTELL NE
2019-03-07 531-351 3XXX5XXX6XXX which blocks → ONVOY, LLC - NE 549E TABLE ROCK NE
2019-03-07 531-535 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - NE 549E KENESAW NE
2019-03-07 540-500 0–9 XXXall 10 · 7 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 LOUISA VA
2019-03-07 657-657 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C ANAHEIM CA
2019-03-07 786-658 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2019-03-06 202-788 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J WSHNGTNZN1 DC
2019-03-06 224-666 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J ARLIGTNHTS IL
2019-03-06 240-664 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF MARYLAND, LLC 568G CUMBERLAND MD
2019-03-06 318-333 0–9 XXXwhole prefix which blocks → ONVOY, LLC - LA 749E MANGHAM LA
2019-03-06 365-558 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Milton —
2019-03-06 432-252 2XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EUNICE WST TX
2019-03-06 435-296 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF UTAH, LLC - UT 526H GLNCNYONCY UT
2019-03-06 531-231 0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → ONVOY, LLC - NE 549E CLAYCENTER NE
2019-03-06 531-251 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NE 549E DAWSON NE
2019-03-06 531-521 0XXX3XXX4XXX5XXX · 2 holders which blocks → ONVOY, LLC - NE 549E DAVEY NE
2019-03-06 531-533 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NE 549E GUIDE ROCK NE
2019-03-06 636-330 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F DE SOTO MO
2019-03-06 681-266 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 KEYSER WV
2019-03-06 873-625 not yet reported which blocks → Cooptel 818D L'Avenir —
2019-03-06 873-626 not yet reported which blocks → Cooptel 818D Wickham —
2019-03-06 873-627 not yet reported which blocks → Cooptel 818D St-Guillaume —
2019-03-05 236-968 not yet reported which blocks → TELUS Mobility 8301 Trail —
2019-03-05 435-271 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF UTAH, LLC - UT 526H SALINA UT
2019-03-05 435-289 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF UTAH, LLC - UT 526H RICHFIELD UT
2019-03-05 475-739 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WOLCOTT CT
2019-03-05 540-766 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 NATURALBDG VA
2019-03-05 804-606 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G BOWLNGGREN VA
2019-03-05 825-989 not yet reported which blocks → TELUS Mobility 8301 Red Deer —
2019-03-05 850-772 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 PANAMACITY FL
2019-03-05 850-782 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TALLAHASSE FL
2019-03-05 914-369 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WSCHSTZN01 NY
2019-03-05 984-477 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F CARY NC
2019-03-04 208-213 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ID 808G ALBENI ID
2019-03-04 225-825 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E NO CORNOR LA
2019-03-04 229-829 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D MOULTRIE GA
2019-03-04 236-970 not yet reported which blocks → TELUS Mobility 8301 Kelowna —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.