NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

3 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 943
TELEPORT COMMUNICATIONS AMERICA, LLC - GA 1
INTRADO COMMUNICATIONS, LLC 1
8X8, INC. 1
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2023-12-14 943-228 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA GA
2023-11-17 943-227 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COVINGTON GA
2023-11-15 943-226 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J ATLANTA SO GA
2023-10-31 943-225 0–9 XXXall 10 · 3 holders which blocks → EON TELECOM, INC. 839J ATLANTA NW GA
2023-10-26 943-224 0–9 XXXall 10 · 3 holders which blocks → CALLWORKS CORPORATION 475J ATLANTA GA
2023-08-09 943-567 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA GA
2023-08-09 943-568 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA GA
2023-05-01 943-400 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CANTON GA
2023-05-01 943-500 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H GRIFFIN GA
2023-04-03 943-219 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H ATLANTA SO GA
2023-04-03 943-220 1XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BREMEN GA
2023-04-03 943-221 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CUMMING GA
2023-03-28 943-404 0XXX1XXX4XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D ZEBULON GA
2023-03-28 943-470 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - GA 067D VILLA RICA GA
2023-03-28 943-678 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D ADAIRSVL GA
2023-03-28 943-770 0XXX1XXX2XXX7XXX8XXX which blocks → ONVOY, LLC - GA 067D BOGARTSTHM GA
2023-03-22 943-218 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA NE GA
2023-02-21 943-217 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 BUFORD GA
2023-01-12 943-215 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA NE GA
2023-01-12 943-216 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CONYERS GA
2023-01-12 943-249 0XXX1XXX4XXX · 3 holders which blocks → ONVOY, LLC - GA 067D ROOPVILLE GA
2023-01-11 943-214 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2023-01-03 943-212 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 WINDER GA
2023-01-03 943-213 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 WINDER GA
2022-12-21 943-210 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWNAN GA
2022-12-19 943-209 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA SO GA
2022-12-16 943-207 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NW GA
2022-12-15 943-234 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D MONROE GA
2022-12-06 943-473 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D GAINESVL GA
2022-12-01 943-206 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COVINGTON GA
2022-11-18 943-223 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D CARTERSVL GA
2022-11-17 943-243 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D WINDER GA
2022-11-03 943-343 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H GAINESVL GA
2022-10-24 943-204 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 CUMMING GA
2022-10-18 943-456 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA NE GA
2022-10-18 943-457 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA NE GA
2022-09-27 943-943 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D GAINESVL GA
2022-09-06 943-200 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA GA
2022-09-01 943-469 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - GA 067D SENOIA GA
2022-08-08 943-203 0–9 XXXall 10 · 7 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ATLANTA GA
2022-07-20 943-208 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 BUFORD GA
2022-07-07 943-201 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CUMMING GA
2022-07-07 943-300 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H ATLANTA NW GA
2022-06-24 943-202 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 BUFORD GA
2022-06-24 943-222 0–9 XXXall 10 · 7 holders which blocks → TERRA NOVA TELECOM INC. 145J JACKSON GA
2022-06-24 943-333 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → TERRA NOVA TELECOM INC. 145J LULA GA
2022-06-24 943-444 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J NEWNAN GA
2022-06-24 943-666 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J ROCKMART GA
2022-06-24 943-777 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J ATLANTA NE GA
2022-06-24 943-888 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J ATLANTA NW GA

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.