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 959
ONVOY, LLC - CT 1
OMNIPOINT COMMUNICATIONS, INC. - CT 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
2022-01-25 959-266 0XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PAWCATUCK CT
2022-01-25 959-922 0XXX1XXX2XXX3XXX4XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J E HAMPTON CT
2022-01-25 959-995 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WILLIMNTIC CT
2022-01-24 959-936 0XXX4XXX5XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LYME CT
2022-01-17 959-426 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COVENTRY CT
2022-01-17 959-516 0XXX1XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KENT CT
2022-01-17 959-912 0XXX1XXX2XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CANTERBURY CT
2022-01-14 959-241 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ENFIELD CT
2022-01-14 959-269 0XXX1XXX8XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F NOTHOMPSON CT
2022-01-14 959-763 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DANIELSON CT
2022-01-14 959-788 5XXX7XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NOTHOMPSON CT
2022-01-13 959-466 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WASHINGTON CT
2022-01-13 959-675 3XXX5XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NORFOLK CT
2022-01-13 959-866 0XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CANTON CT
2022-01-13 959-966 0XXX4XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAKEVILLE CT
2022-01-10 959-244 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CT 639C FARMINGTON CT
2022-01-10 959-588 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NIANTIC CT
2022-01-10 959-625 0XXX1XXX2XXX5XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLINTON CT
2022-01-10 959-746 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OLD SAYBRK CT
2022-01-10 959-916 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J THOMASTON CT
2022-01-10 959-933 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WINSTED CT
2022-01-07 959-832 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWBRITAIN CT
2021-12-09 959-236 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J HARTFORD CT
2021-12-03 959-237 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 GLASTONBY CT
2021-10-05 959-228 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CT 639C CORNWALL CT
2021-10-05 959-229 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 TORRINGTON CT
2021-10-05 959-231 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 DEEP RIVER CT
2021-09-27 959-261 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 SOUTHINGTN CT
2021-09-14 959-599 0–9 XXXall 10 · 5 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J HARTFORD CT
2021-07-13 959-235 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CT 639C BRISTOL CT
2021-07-13 959-243 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C ROCKVILLE CT
2021-07-02 959-227 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CT 639C CANAAN CT
2021-06-30 959-226 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEWBRITAIN CT
2021-06-24 959-225 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CT 639C NEWBRITAIN CT
2021-06-24 959-232 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C WILLIMNTIC CT
2021-04-18 959-239 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 OLD SAYBRK CT
2021-04-14 959-837 0–9 XXXall 10 · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NORWICH CT
2021-04-06 959-223 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J HARTFORD CT
2021-04-01 959-218 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J STORRS CT
2021-04-01 959-219 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J STORRS CT
2021-04-01 959-221 0–9 XXXall 10 · 4 holders which blocks → IP HORIZON LLC 515J HARTFORD CT
2021-03-16 959-465 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H WATERTOWN CT
2021-03-16 959-758 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PLAINFIELD CT
2021-02-16 959-310 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BRISTOL CT
2021-02-16 959-410 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H COLCHESTER CT
2021-02-16 959-510 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H COLUMBIA CT
2021-02-16 959-610 0XXX1XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H HARWINTON CT
2021-02-16 959-810 0XXX1XXX2XXX3XXX5XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MOODUS CT
2021-02-16 959-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MYSTIC CT
2021-02-16 959-951 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H NEW LONDON CT

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.