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
2020-08-25 219-955 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PORTAGE IN
2020-08-25 219-966 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HIGHLAND IN
2020-08-25 260-345 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H ANDREWS IN
2020-08-25 269-289 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BATTLE CRK MI
2020-08-25 308-330 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 NO PLATTE NE
2020-08-25 341-600 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ELSBR-PINL CA
2020-08-25 414-726 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MILWAUKZN1 WI
2020-08-25 438-509 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2020-08-25 463-345 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CARMEL IN
2020-08-25 463-500 0XXX1XXX2XXX3XXX5XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H NINEVEH IN
2020-08-25 470-637 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2020-08-25 505-439 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 AZTEC NM
2020-08-25 540-821 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BERRYVILLE VA
2020-08-25 628-345 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H POINTREYES CA
2020-08-25 628-842 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CORTEMADRA CA
2020-08-25 629-244 0–9 XXXwhole prefix which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 FRANKLIN TN
2020-08-25 629-245 0–9 XXXall 10 · 3 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 FRANKLIN TN
2020-08-25 636-339 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 OFALLON MO
2020-08-25 650-744 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MT VIEW CA
2020-08-25 650-844 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SAN MATEO CA
2020-08-25 672-513 not yet reported which blocks → Videotron Ltd. 787G Vancouver —
2020-08-25 689-529 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H KENANSVL FL
2020-08-25 747-724 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNFN GRHL CA
2020-08-25 757-981 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NRFOLKZON2 VA
2020-08-25 779-280 0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → STRATUS NETWORKS 495J DONOVAN IL
2020-08-25 779-282 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → STRATUS NETWORKS 495J MARTINTON IL
2020-08-25 779-283 0XXX1XXX2XXX3XXX4XXX · 3 holders which blocks → STRATUS NETWORKS 495J RICHMOND IL
2020-08-25 779-284 0XXX1XXX8XXX · 3 holders which blocks → STRATUS NETWORKS 495J SHELDON IL
2020-08-25 779-285 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → STRATUS NETWORKS 495J SHERIDAN IL
2020-08-25 779-286 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks → STRATUS NETWORKS 495J SPRING GRV IL
2020-08-25 782-886 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Amherst —
2020-08-25 782-887 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Amherst —
2020-08-25 782-889 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Amherst —
2020-08-25 804-636 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F HOPEWELL VA
2020-08-25 813-596 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D TAMPANTH FL
2020-08-25 825-431 not yet reported which blocks → Videotron Ltd. 787G Calgary —
2020-08-25 825-436 not yet reported which blocks → Videotron Ltd. 787G Edmonton —
2020-08-25 910-768 0XXX8XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ELLERBE NC
2020-08-25 916-510 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 FOLSOM CA
2020-08-25 916-820 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 928-307 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - AZ 630E PAGE AZ
2020-08-25 930-234 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H W HARRISON IN
2020-08-25 947-881 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 984-259 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DURHAM NC
2020-08-25 984-261 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHAPELHILL NC
2020-08-24 720-714 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CO 026D LONGMONT CO
2020-08-24 743-219 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2020-08-24 757-972 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 NRFOLKZON3 VA
2020-08-24 782-883 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Amherst —
2020-08-24 782-885 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Amherst —

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.