NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

3 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 839
ONVOY, LLC - SC 2
NEW CINGULAR WIRELESS PCS, LLC - GA 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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2022-01-04 839-212 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWBERRY SC
2022-01-04 839-837 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ORANGEBURG SC
2021-12-14 839-209 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BATH SC
2021-12-14 839-210 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BAMBERG SC
2021-12-10 839-208 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BARNWELL SC
2021-11-08 839-207 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINNSBORO SC
2021-09-10 839-399 0–9 XXXall 10 · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J COLUMBIA SC
2021-09-03 839-206 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 NEWBERRY SC
2021-08-25 839-278 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CAMDEN SC
2021-07-20 839-205 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 LEXINGTON SC
2021-05-25 839-204 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J FAIRFAX SC
2021-04-17 839-203 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BATESBURG SC
2021-04-02 839-272 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BLACKVILLE SC
2021-03-16 839-766 1XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H GREATFALLS SC
2021-02-09 839-810 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H COLUMBIA SC
2021-01-25 839-202 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 COLUMBIA SC
2020-12-10 839-432 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - SC 548E CAMDEN SC
2020-12-10 839-854 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E ORANGEBURG SC
2020-08-21 839-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J COLUMBIA SC
2020-08-05 839-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ROCK HILL SC
2020-07-28 839-400 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H FORT MILL SC
2020-06-16 839-201 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J COLUMBIA SC
2020-06-10 839-356 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ORANGEBURG SC
2020-03-27 839-200 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WHITMIRE SC
2020-03-27 839-222 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BATH SC
2020-03-27 839-300 0XXX1XXX3XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H SHAWAFBHTS SC
2020-03-27 839-333 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SUMTER SC
2020-03-27 839-444 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H EHRHARDT SC
2020-03-27 839-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H AIKEN SC
2020-03-27 839-529 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BAMBERG SC
2020-03-27 839-600 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H HOLLY HILL SC
2020-03-27 839-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ESTILL SC
2020-03-27 839-777 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H EDGEFIELD SC
2020-03-27 839-800 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NEWELLENTN SC
2020-03-27 839-888 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DENMARK SC
2020-03-27 839-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H JOHNSTON SC
2020-03-27 839-999 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CHPNLTLMTN SC
— 839-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-214 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROCK HILL SC
— 839-225 0XXX1XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → ONVOY, LLC - SC 548E NORTH SC
— 839-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST SC
— 839-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-700 not yet reported which blocks → SC
— 839-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 839-950 not yet reported which blocks → SC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.