NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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
2019-09-18 825-455 not yet reported which blocks → Bell Mobility 6574 Calgary —
2019-09-18 904-539 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C JACKSONVL FL
2019-09-18 954-932 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D HOLLYWOOD FL
2019-09-18 956-394 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2019-09-18 971-359 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVER CRK OR
2019-09-18 971-362 0–9 XXXall 10 · 3 holders which blocks → EXIANT COMMUNICATIONS LLC 114J PORTLAND OR
2019-09-17 216-294 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2019-09-17 216-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CLEVELAND OH
2019-09-17 236-802 not yet reported which blocks → Iristel Inc. 154E Williams Lake —
2019-09-17 236-803 not yet reported which blocks → Iristel Inc. 154E Revelstoke —
2019-09-17 325-900 0XXX9XXX which blocks → FRACTEL, LLC 965H MERKEL TX
2019-09-17 501-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H LITTLEROCK AR
2019-09-17 505-364 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J ALBUQURQUE NM
2019-09-17 506-308 not yet reported which blocks → Iristel Inc. 154E Miramichi —
2019-09-17 574-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2019-09-17 612-445 0–9 XXXall 10 · 3 holders which blocks → EXIANT COMMUNICATIONS LLC 114J TWINCITIES MN
2019-09-17 779-900 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H FRANKFORT IL
2019-09-17 786-722 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2019-09-17 808-758 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H WAILUKU HI
2019-09-17 808-900 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H HONOLULU HI
2019-09-17 812-990 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D TERREHAUTE IN
2019-09-17 825-505 not yet reported which blocks → Iristel Inc. 154E St. Paul —
2019-09-17 825-506 not yet reported which blocks → Iristel Inc. 154E Wainwright —
2019-09-17 825-507 not yet reported which blocks → Iristel Inc. 154E Wetaskiwin —
2019-09-17 872-710 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2019-09-17 938-500 0XXX5XXX which blocks → FRACTEL, LLC 965H FLAT ROCK AL
2019-09-17 938-600 0XXX1XXX2XXX3XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H LECTA AL
2019-09-17 959-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H HARTFORD CT
2019-09-16 215-388 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2019-09-16 236-709 not yet reported which blocks → Iristel Inc. 154E Quesnel —
2019-09-16 236-710 not yet reported which blocks → Iristel Inc. 154E Sparwood —
2019-09-16 313-464 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J DETROITZN6 MI
2019-09-16 364-201 0–9 XXXall 10 · 7 holders which blocks → EXIANT COMMUNICATIONS LLC 114J BOWLNGGREN KY
2019-09-16 470-772 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 WINDER GA
2019-09-16 502-546 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J LOUISVILLE KY
2019-09-16 515-858 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J DES MOINES IA
2019-09-16 520-416 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J TUCSON AZ
2019-09-16 581-506 not yet reported which blocks → Iristel Inc. 154E Rimouski —
2019-09-16 616-306 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J GRAND RPDS MI
2019-09-16 631-819 0–9 XXXwhole prefix which blocks → CSC WIRELESS, LLC 425J BAY SHORE NY
2019-09-16 701-977 0–9 XXXall 10 · 6 holders which blocks → EXIANT COMMUNICATIONS LLC 114J FARGO ND
2019-09-16 848-280 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DUNELLEN NJ
2019-09-16 859-413 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J LEXINGTON KY
2019-09-16 949-755 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CAPITRNVLY CA
2019-09-13 234-255 0–9 XXXall 10 · 3 holders which blocks → EXIANT COMMUNICATIONS LLC 114J AKRON OH
2019-09-13 308-271 0XXX2XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 SPALDING NE
2019-09-13 308-273 0XXX1XXX2XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BRULE NE
2019-09-13 308-274 0XXX2XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CHAPMAN NE
2019-09-13 308-301 0XXX2XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CEDAR RPDS NE
2019-09-13 314-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H ST LOUIS MO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.