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
2020-05-28 585-699 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → ONVOY, LLC- NY 384C DANSVILLE NY
2020-05-28 607-318 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C GREENWOOD NY
2020-05-28 631-646 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C SAYVILLE NY
2020-05-28 667-282 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MD 876D TILGHMAN MD
2020-05-28 716-993 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC- NY 384C CHERRY CRK NY
2020-05-28 769-768 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J JACKSON MS
2020-05-28 770-746 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA SO GA
2020-05-28 779-273 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC 224C DANFORTH IL
2020-05-28 779-778 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC 224C WINNEBAGO IL
2020-05-28 838-204 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C HAMPTON NY
2020-05-28 845-385 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C CALLICOON NY
2020-05-28 857-837 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D CHARLESTN MA
2020-05-28 872-873 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC 224C CHICGOZN11 IL
2020-05-28 937-932 0XXX1XXX2XXX3XXX · 2 holders which blocks → ONVOY, LLC - OH 464C HUNTSVILLE OH
2020-05-28 937-984 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MILFORDCTR OH
2020-05-28 937-989 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C YORKCENTER OH
2020-05-28 959-224 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C LITCHFIELD CT
2020-05-28 959-301 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CT 639C COVENTRY CT
2020-05-28 959-949 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CT 639C JEWETTCITY CT
2020-05-27 213-946 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H LSAN DA 12 CA
2020-05-27 223-336 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CARLISLE PA
2020-05-27 223-348 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DOVER PA
2020-05-27 223-465 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H GREENCASTL PA
2020-05-27 223-529 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LANCASTER PA
2020-05-27 223-677 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H REEDSVILLE PA
2020-05-27 223-732 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H PALMYRA PA
2020-05-27 223-758 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H MECHANCSBG PA
2020-05-27 223-786 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H STEWARTSTN PA
2020-05-27 223-842 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H NEWVILLE PA
2020-05-27 223-877 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H YORK PA
2020-05-27 223-946 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MYERSTOWN PA
2020-05-27 223-977 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H PORT ROYAL PA
2020-05-27 279-234 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SCRM MAIN CA
2020-05-27 279-345 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SCRM NORTH CA
2020-05-27 341-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RICHMOND CA
2020-05-27 424-424 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CMTN GRDN CA
2020-05-27 438-480 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-05-27 445-455 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PLUMSTEDVL PA
2020-05-27 484-966 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BETHLEHEM PA
2020-05-27 539-877 0XXX1XXX2XXX5XXX6XXX7XXX · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J HARTSHORNE OK
2020-05-27 562-488 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ALAMITOS CA
2020-05-27 562-855 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LONG BEACH CA
2020-05-27 562-966 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DOWNEY CA
2020-05-27 610-610 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H MORGANTOWN PA
2020-05-27 661-502 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D SNCA NHCS CA
2020-05-27 878-348 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BEAVER FLS PA
2020-05-27 878-377 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SHARPSVL PA
2020-05-27 878-677 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H NEWWLMNGTN PA
2020-05-27 878-688 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H HOMER CITY PA
2020-05-27 949-822 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H IRVINE CA

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.