NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

2 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 854
WIDE VOICE, LLC - SC 1
ONVOY, LLC - SC 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
2020-02-24 854-977 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WILLIAMS SC
2020-02-14 854-234 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PATRICK SC
2019-12-05 854-300 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SUMMERVL SC
2019-12-04 854-766 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H EDISTO IS SC
2019-12-03 854-204 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H FLORENCE SC
2019-10-10 854-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHARLESTON SC
2019-10-10 854-544 0XXX1XXX4XXX5XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BENNETTSVL SC
2019-10-10 854-600 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MYRTLE BCH SC
2019-10-10 854-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LAKE CITY SC
2019-10-10 854-758 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H DARLINGTON SC
2019-10-02 854-220 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E SUMMERVL SC
2019-10-02 854-843 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E LAMAR SC
2019-03-01 854-203 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C KINGSTREE SC
2019-02-20 854-900 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J CHARLESTON SC
2019-01-03 854-201 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C WALTERBORO SC
2018-08-29 854-458 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - SC 548E LAKE VIEW SC
2018-06-11 854-850 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E MULLINS SC
2018-03-14 854-854 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - SC 548E MYRTLE BCH SC
2018-03-09 854-227 0–9 XXXall 10 · 4 holders which blocks → SOUTH CAROLINA NET, INC. - SC 1784 MTPLEASANT SC
2018-03-02 854-400 0–9 XXXwhole prefix which blocks → ONVOY, LLC - SC 548E FLORENCE SC
2017-09-01 854-800 0–9 XXXwhole prefix which blocks → ONVOY, LLC - SC 548E CHARLESTON SC
2017-08-17 854-429 0–9 XXXall 10 · 5 holders which blocks → SOUTH CAROLINA NET, INC. - SC 1784 CHARLESTON SC
2017-03-08 854-333 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H WALTERBORO SC
2017-02-28 854-222 0–9 XXXall 10 · 7 holders which blocks → TELNYX LLC 073H CHARLESTON SC
2016-09-08 854-202 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2015-11-23 854-444 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - SC 548E CHARLESTON SC
2015-11-13 854-529 0–9 XXXall 10 · 4 holders which blocks → SOUTH CAROLINA NET, INC. - SC 1784 CHARLESTON SC
2015-09-28 854-777 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E ISLE PALMS SC
2015-09-28 854-888 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - SC 548E SUMMERVL SC
2015-09-15 854-999 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - SC 548E CHARLESTON SC
— 854-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-218 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 EASTCONWAY SC
— 854-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST SC
— 854-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-700 not yet reported which blocks → SC
— 854-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX SC
— 854-950 not yet reported which blocks → SC
— 854-958 not yet reported which blocks → SC
— 854-959 not yet reported which blocks → SC
— 854-976 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.