NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
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
2020-07-02 951-644 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BANNING CA
2020-07-02 951-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HEMT SNJC CA
2020-07-02 954-758 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HOLLYWOOD FL
2020-07-02 979-766 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H E BERNARD TX
2020-07-02 989-346 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 MIO MI
2020-07-01 220-300 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H WILKESVL OH
2020-07-01 252-800 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PINEYWOODS NC
2020-07-01 252-900 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ROCKYMOUNT NC
2020-07-01 405-901 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ANADARKO OK
2020-07-01 463-234 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FISHERS IN
2020-07-01 469-849 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2020-07-01 505-413 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2020-07-01 505-430 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GALLUP NM
2020-07-01 513-676 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2020-07-01 539-348 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H SO CHETOPA OK
2020-07-01 719-501 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F PUEBLO CO
2020-07-01 726-200 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2020-07-01 743-529 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H HAYS NC
2020-07-01 913-386 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J KANSASCITY KS
2020-07-01 980-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MONROE NC
2020-07-01 980-766 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CHARLOTTE NC
2020-07-01 980-946 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MOORESVL NC
2020-06-30 220-600 0XXX1XXX6XXX which blocks → FRACTEL, LLC 965H SCIO OH
2020-06-30 314-847 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 LADUE MO
2020-06-30 316-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WICHITA KS
2020-06-30 334-729 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F PINE HILL AL
2020-06-30 437-324 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-06-30 470-614 0–9 XXXall 10 · 2 holders which blocks → ASSURANCE TELECOM, LLC 518J ATLANTA GA
2020-06-30 507-737 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANKATO MN
2020-06-30 579-564 not yet reported which blocks → 9164-3122 Quebec inc 843D St-Zephirin —
2020-06-30 620-677 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → FRACTEL, LLC 965H PLAINS KS
2020-06-30 620-788 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H MOLINE KS
2020-06-30 620-833 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 8 holders which blocks → FRACTEL, LLC 965H HUTCHINSON KS
2020-06-30 620-844 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H HAMILTON KS
2020-06-30 620-977 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H MINNEOLA KS
2020-06-30 657-446 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2020-06-30 747-295 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NO HOLLYWD CA
2020-06-30 913-500 0XXX1XXX3XXX5XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H MOUND CITY KS
2020-06-30 913-600 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OLATHE KS
2020-06-30 913-842 5XXX6XXX · 2 holders which blocks → FRACTEL, LLC 965H WINCHESTER KS
2020-06-30 959-216 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F SOUTHINGTN CT
2020-06-29 202-428 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSHNGTNZN1 DC
2020-06-29 442-320 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D ENCINITAS CA
2020-06-29 470-613 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D TEMPLE GA
2020-06-29 531-247 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J OMAHA NE
2020-06-29 561-519 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-06-29 659-658 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E PELL CITY AL
2020-06-29 682-842 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SPRINGTOWN TX
2020-06-29 785-758 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H BELLEVILLE KS
2020-06-29 785-788 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → FRACTEL, LLC 965H SCANDIA KS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.