NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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
2020-07-13 659-732 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H THORSBY AL
2020-07-13 659-758 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H LIVINGSTON AL
2020-07-13 659-842 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H GRAYSVILLE AL
2020-07-13 659-977 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PINSON AL
2020-07-13 720-706 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CO 026D DENVER CO
2020-07-13 725-237 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NV 075F MTCHARLETN NV
2020-07-13 757-733 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NWPTNWSZN4 VA
2020-07-13 763-335 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E PRINCETON MN
2020-07-13 804-766 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PETERSBURG VA
2020-07-13 804-946 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H CHESTER VA
2020-07-13 938-356 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H SECTION AL
2020-07-13 938-388 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H DELTA AL
2020-07-13 938-732 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H RANBURNE AL
2020-07-13 938-758 0XXX1XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H CEDARBLUFF AL
2020-07-13 938-842 0XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → FRACTEL, LLC 965H WHORTON AL
2020-07-13 938-946 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H CHULAFINNE AL
2020-07-13 952-600 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2020-07-13 985-363 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 HAMMOND LA
2020-07-13 986-336 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H FAIRFIELD ID
2020-07-13 986-356 0XXX1XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SPRINGFLD ID
2020-07-13 986-386 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H WILDER ID
2020-07-13 986-529 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H RICHFIELD ID
2020-07-13 986-766 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H RIGGINS ID
2020-07-13 986-946 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H HOPE ID
2020-07-10 213-544 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LSAN DA 01 CA
2020-07-10 213-644 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LSAN DA 14 CA
2020-07-10 213-678 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H MONTEBELLO CA
2020-07-10 224-499 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ARLIGTNHTS IL
2020-07-10 224-599 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BARRINGTON IL
2020-07-10 309-632 0–9 XXXall 10 · 7 holders which blocks → STRATUS NETWORKS 495J DELAVAN IL
2020-07-10 309-638 1XXX8XXX · 2 holders which blocks → STRATUS NETWORKS 495J GALVA IL
2020-07-10 309-656 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → STRATUS NETWORKS 495J SOUTHPEKIN IL
2020-07-10 309-701 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → STRATUS NETWORKS 495J SPRING BAY IL
2020-07-10 309-704 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → STRATUS NETWORKS 495J TRIVOLI IL
2020-07-10 325-577 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H ELDORADO TX
2020-07-10 361-377 0XXX1XXX2XXX3XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SKIDMORE TX
2020-07-10 361-477 0XXX1XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H YORKTOWN TX
2020-07-10 424-842 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H W ANGELES CA
2020-07-10 431-408 not yet reported which blocks → LES.NET (1996) Inc. 141F St. Adolphe —
2020-07-10 442-688 0XXX4XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H PALO VERDE CA
2020-07-10 458-250 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J EUGENE OR
2020-07-10 479-389 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2020-07-10 513-689 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LEBANON OH
2020-07-10 559-699 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VISALIA CA
2020-07-10 559-955 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H TIVYVALLEY CA
2020-07-10 562-844 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ALAMITOS CA
2020-07-10 562-955 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H DOWNEY CA
2020-07-10 571-544 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WSNGTNZN19 VA
2020-07-10 571-677 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H DALE CITY VA
2020-07-10 571-755 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HAYMARKET VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.