NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
— 270-959 not yet reported which blocks → KY
— 270-960 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → COMMIO, LLC 939H SO HARDIN KY
— 270-964 not yet reported which blocks → ONVOY, LLC - KY 896E MAYFIELD KY
— 270-965 7XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MARION KY
— 270-967 1XXX9XXX · 2 holders which blocks → ONVOY, LLC - KY 896E MARION KY
— 270-968 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BROWNSVL KY
— 270-976 not yet reported which blocks → KY
— 270-984 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - KY 987E OAK GROVE KY
— 270-988 none assigned yet which blocks → SALEM TEL. CO. 0417 SALEM KY
— 270-991 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOWLNGGREN KY
— 270-993 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OWENSBORO KY
— 270-994 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PADUCAH KY
— 270-996 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C BOWLNGGREN KY
— 272-200 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E STROUDSBG PA
— 272-205 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H MANTZVILLE PA
— 272-210 not yet reported which blocks → PA
— 272-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-213 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 SAYLORSBG PA
— 272-221 0–9 XXXall 10 · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
— 272-222 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E BEAVER SPG PA
— 272-236 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E WILLIAMSPT PA
— 272-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-312 0XXX1XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - PA 547E GALILEE PA
— 272-333 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E FRACKVILLE PA
— 272-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-435 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 HAZLETON PA
— 272-444 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E SELINSGRV PA
— 272-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT PA
— 272-570 not yet reported which blocks → PA
— 272-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-666 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E TAMAQUA PA
— 272-700 not yet reported which blocks → PA
— 272-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-777 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E GALILEE PA
— 272-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-888 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E HAMLIN PA
— 272-890 not yet reported which blocks → PA
— 272-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 272-936 not yet reported which blocks → PA
— 272-950 not yet reported which blocks → PA
— 272-958 not yet reported which blocks → PA
— 272-959 not yet reported which blocks → PA
— 272-976 not yet reported which blocks → PA
— 272-999 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E BEACH LAKE PA
— 274-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 274-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 274-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 274-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 274-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.