NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
2020-09-18 779-346 0XXX1XXX2XXX3XXX · 4 holders which blocks → FRACTEL, LLC 965H CAPRON IL
2020-09-18 779-722 0XXX2XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → FRACTEL, LLC 965H ASHTON IL
2020-09-18 929-688 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN05 NY
2020-09-18 929-699 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NWYRCYZN06 NY
2020-09-18 929-722 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NWYRCYZN07 NY
2020-09-18 929-733 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H NWYRCYZN08 NY
2020-09-18 929-744 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H NWYRCYZN09 NY
2020-09-18 929-755 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H NWYRCYZN10 NY
2020-09-18 929-786 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN04 NY
2020-09-18 929-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN12 NY
2020-09-18 929-799 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H NWYRCYZN13 NY
2020-09-18 929-822 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NWYRCYZN14 NY
2020-09-18 929-833 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN15 NY
2020-09-18 929-946 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NWYRCYZN03 NY
2020-09-18 934-234 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H AMITYVILLE NY
2020-09-18 934-345 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BABYLON NY
2020-09-18 971-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J PORTLAND OR
2020-09-17 209-773 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MOKELUMNHL CA
2020-09-17 223-241 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LEBANON PA
2020-09-17 228-262 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J BILOXI MS
2020-09-17 279-346 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SCRM NORTH CA
2020-09-17 279-348 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SCRM MAIN CA
2020-09-17 279-759 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H RIO LINDA CA
2020-09-17 279-946 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H MEADOWVIEW CA
2020-09-17 307-304 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 JEFFREY CY WY
2020-09-17 307-319 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SHOSHONI WY
2020-09-17 309-804 1XXX4XXX · 2 holders which blocks → STRATUS NETWORKS 495J SEATON IL
2020-09-17 309-805 1XXX5XXX · 2 holders which blocks → STRATUS NETWORKS 495J RIO IL
2020-09-17 309-806 0XXX1XXX3XXX9XXX · 3 holders which blocks → STRATUS NETWORKS 495J LITTLEYORK IL
2020-09-17 309-812 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → STRATUS NETWORKS 495J CARLOCK IL
2020-09-17 309-813 1XXX7XXX8XXX · 3 holders which blocks → STRATUS NETWORKS 495J BELLFLOWER IL
2020-09-17 325-287 1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → IP HORIZON LLC 515J SAN ANGELO TX
2020-09-17 341-300 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H RICHMOND CA
2020-09-17 412-813 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ELIZABETH PA
2020-09-17 442-346 0XXX2XXX4XXX5XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H BENTON CA
2020-09-17 442-388 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DESERT CTR CA
2020-09-17 442-399 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H EL MIRAGE CA
2020-09-17 442-432 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CALEXICO CA
2020-09-17 442-488 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ESCONDIDO CA
2020-09-17 442-499 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FORT IRWIN CA
2020-09-17 442-588 0XXX1XXX5XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H HOMESTDVLY CA
2020-09-17 442-599 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIO CA
2020-09-17 442-786 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BLYTHE CA
2020-09-17 501-441 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J LITTLEROCK AR
2020-09-17 628-432 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNFC MT-EV CA
2020-09-17 628-946 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SNFC CNTRL CA
2020-09-17 657-454 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-09-17 659-208 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J BIRMINGHAM AL
2020-09-17 661-514 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MCFARLAND CA
2020-09-17 669-465 3XXX4XXX5XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H SANANTONIO CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.