NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
2019-05-23 225-432 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H BATONROUGE LA
2019-05-23 229-466 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E GEORGETOWN GA
2019-05-23 229-488 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VALDOSTA GA
2019-05-23 307-666 0XXX4XXX6XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H CHEYENNE WY
2019-05-23 361-251 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 C CHRISTI TX
2019-05-23 385-330 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F PLEASATGRV UT
2019-05-23 432-348 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BIG SPRING TX
2019-05-23 432-356 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ALPINE TX
2019-05-23 432-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MONAHANS TX
2019-05-23 432-600 0XXX4XXX6XXX · 2 holders which blocks → FRACTEL, LLC 965H MIDLAND TX
2019-05-23 432-900 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H TERMINAL TX
2019-05-23 438-254 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-05-23 438-692 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-05-23 475-262 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F HUNTINGTON CT
2019-05-23 647-432 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-23 681-688 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WEST UNION WV
2019-05-23 734-492 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2019-05-23 762-275 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBUS GA
2019-05-23 802-400 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - VT 451F BRADFORD VT
2019-05-23 845-844 0XXX4XXX · 2 holders which blocks → TERRA NOVA TELECOM INC. 145J POUGHKEPSI NY
2019-05-23 872-248 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-23 915-529 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EL PASO TX
2019-05-23 915-900 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H FT HANCOCK TX
2019-05-23 920-678 4XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ST CLOUD WI
2019-05-23 929-977 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H NWYRCYZN14 NY
2019-05-23 940-290 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F AUBREY TX
2019-05-23 940-291 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F GAINESVL TX
2019-05-22 208-207 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J BOISE ID
2019-05-22 423-597 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F BENTON TN
2019-05-22 438-251 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-05-22 469-653 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F ROCKWALL TX
2019-05-22 470-531 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NW GA
2019-05-22 561-476 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2019-05-22 561-725 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WPALMBEACH FL
2019-05-22 562-504 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 WHITTIER CA
2019-05-22 620-882 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - KS 8995 COLDWATER KS
2019-05-22 720-797 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F KEENESBURG CO
2019-05-22 754-732 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H FTLAUDERDL FL
2019-05-22 772-348 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PTST LUCIE FL
2019-05-22 772-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H FORTPIERCE FL
2019-05-22 772-837 0–9 XXXall 10 · 6 holders which blocks → CORETEL FLORIDA, INC. - FL 481F PTST LUCIE FL
2019-05-22 786-988 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MIAMI FL
2019-05-22 804-877 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RICHMOND VA
2019-05-22 929-526 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN03 NY
2019-05-21 213-371 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 03 CA
2019-05-21 254-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TEMPLE TX
2019-05-21 254-529 3XXX9XXX which blocks → FRACTEL, LLC 965H WACO TX
2019-05-21 318-788 0XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H HOSSTON LA
2019-05-21 318-877 0XXX2XXX3XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H BELCHER LA
2019-05-21 318-977 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H MONROE LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.