NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

372 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 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2019-03-20 786-692 0–9 XXXall 10 · 3 holders which blocks → CORETEL FLORIDA, INC. - FL 481F NORTH DADE FL
2019-03-20 786-733 0–9 XXXall 10 · 4 holders which blocks → CORETEL FLORIDA, INC. - FL 481F PERRINE FL
2019-03-20 831-208 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SALINAS CA
2019-03-20 831-348 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WATSONVL CA
2019-03-20 831-877 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CARMEL CA
2019-03-20 925-655 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CONCORD CA
2019-03-20 925-758 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LIVERMORE CA
2019-03-20 925-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PITTSBURG CA
2019-03-20 925-877 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ANTIOCH CA
2019-03-19 213-459 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2019-03-19 213-577 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LSAN DA 04 CA
2019-03-19 216-877 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J CLEVELAND OH
2019-03-19 254-900 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J WACO TX
2019-03-19 323-949 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-03-19 346-500 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J HOUSTON TX
2019-03-19 361-206 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 C CHRISTI TX
2019-03-19 430-900 0–9 XXXall 10 · 7 holders which blocks → TERRA NOVA TELECOM INC. 145J PARIS TX
2019-03-19 434-800 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM INC. 145J LAWRENCEVL VA
2019-03-19 437-354 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2019-03-19 437-355 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2019-03-19 437-356 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2019-03-19 442-306 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 INDIO CA
2019-03-19 510-977 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H OKLD BKLY CA
2019-03-19 513-866 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J CINCINNATI OH
2019-03-19 561-468 0–9 XXXall 10 · 5 holders which blocks → CORETEL FLORIDA, INC. - FL 481F JUPITER FL
2019-03-19 561-639 0–9 XXXall 10 · 4 holders which blocks → CORETEL FLORIDA, INC. - FL 481F DELRAY BCH FL
2019-03-19 567-600 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J TOLEDO OH
2019-03-19 619-877 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNDG MRMS CA
2019-03-19 619-932 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CHULAVISTA CA
2019-03-19 626-567 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PSDN PSDN CA
2019-03-19 628-288 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MILLVALLEY CA
2019-03-19 628-336 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SAN RAFAEL CA
2019-03-19 628-628 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNFC CNTRL CA
2019-03-19 628-758 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNFC MT-EV CA
2019-03-19 650-699 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H SAN MATEO CA
2019-03-19 650-788 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PALO ALTO CA
2019-03-19 661-566 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 PLDL PLDL CA
2019-03-19 669-699 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNJS SOUTH CA
2019-03-19 705-289 not yet reported which blocks → Videotron Ltd. 383F Lindsay —
2019-03-19 726-900 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J SANANTONIO TX
2019-03-19 737-900 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J AUSTIN TX
2019-03-19 754-837 0–9 XXXall 10 · 6 holders which blocks → CORETEL FLORIDA, INC. - FL 481F HOLLYWOOD FL
2019-03-19 830-932 0XXX which blocks → TWC IP ENABLED SERVICES, LLC 793K KNIPPA TX
2019-03-19 838-208 0XXX2XXX9XXX · 2 holders which blocks → CSC WIRELESS, LLC 425J COPAKE NY
2019-03-19 858-388 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EL CAJON CA
2019-03-19 858-585 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LA MESA CA
2019-03-19 858-788 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LA JOLLA CA
2019-03-19 858-988 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNDG SNDG CA
2019-03-19 937-800 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J DAYTON OH
2019-03-19 980-900 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J CHARLOTTE NC

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.