NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2022-01-17 864-792 0XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LIBERTY SC
2022-01-17 873-260 not yet reported which blocks → ISP Telecom Inc. 4727 Bouchette —
2022-01-17 873-529 not yet reported which blocks → ISP Telecom Inc. 4727 Gracefield —
2022-01-17 873-801 not yet reported which blocks → ISP Telecom Inc. 4727 Grand-Remous —
2022-01-17 945-239 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
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
2022-01-14 223-276 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RED LION PA
2022-01-14 223-639 5XXX6XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MARYSVILLE PA
2022-01-14 223-832 0XXX1XXX4XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KIRKWOOD PA
2022-01-14 254-763 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J SIDNEY TX
2022-01-14 260-298 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J FORT WAYNE IN
2022-01-14 269-522 2XXX5XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PULLMAN MI
2022-01-14 269-752 0XXX1XXX2XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DOWAGIAC MI
2022-01-14 269-786 6XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FENNVILLE MI
2022-01-14 269-868 0XXX6XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OLIVET MI
2022-01-14 272-289 0–9 XXXall 10 · 5 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J WILLIAMSPT PA
2022-01-14 272-383 0XXX1XXX3XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LOGANTON PA
2022-01-14 272-637 0XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LEROY PA
2022-01-14 272-746 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KULPMONT PA
2022-01-14 272-763 0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAKE COMO PA
2022-01-14 276-264 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 RICHLANDS VA
2022-01-14 319-441 0XXX1XXX2XXX7XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E CENTER PT IA
2022-01-14 341-441 0–9 XXXall 10 · 4 holders which blocks → SONIC TELECOM, LLC - CA 433E OKLD MN-PD CA
2022-01-14 346-541 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2022-01-14 346-543 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2022-01-14 346-624 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LANGHAMCRK TX
2022-01-14 346-637 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KATY TX
2022-01-14 346-647 4XXX5XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MISSOURICY TX
2022-01-14 346-782 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PORTER TX
2022-01-14 417-990 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMMIO, LLC 939H SPRINGFLD MO
2022-01-14 424-467 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 W ANGELES CA
2022-01-14 430-289 1XXX which blocks → TWC IP ENABLED SERVICES, LLC 793K CUMBY TX
2022-01-14 442-373 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BRAWLEY CA
2022-01-14 442-637 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J INDIO CA
2022-01-14 442-733 0XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PINYON CA
2022-01-14 470-917 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2022-01-14 470-919 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2022-01-14 470-923 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2022-01-14 470-929 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2022-01-14 475-316 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2022-01-14 475-351 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2022-01-14 475-544 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NORWALK CT
2022-01-14 502-575 0–9 XXXall 10 · 9 holders which blocks → BANDWIDTH.COM CLEC, LLC - KY 987E PORT ROYAL KY
2022-01-14 502-726 0XXX1XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEW HAVEN KY
2022-01-14 502-954 0XXX1XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - KY 987E CAMPBELSBG KY
2022-01-14 515-377 0XXX1XXX2XXX3XXX5XXX8XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E EARLHAM IA
2022-01-14 515-716 0XXX1XXX7XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E PRAIRIE CY IA
2022-01-14 515-784 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E DAWSON IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.