NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 920
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
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
2021-12-10 920-812 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J FONDDU LAC WI
2021-12-02 920-873 0–9 XXXall 10 · 8 holders which blocks → TWILIO INTERNATIONAL, INC. 506J GREEN BAY WI
2021-11-03 920-817 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - WI 6274 FTATKINSON WI
2021-10-19 920-414 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - WI 225C NEENAH WI
2021-10-19 920-534 0XXX1XXX2XXX8XXX · 3 holders which blocks → PENINSULA FIBER NETWORK, LLC - WI 841H ABRAMS WI
2021-08-12 920-549 0XXX4XXX8XXX · 3 holders which blocks → UNITED STATES CELLULAR - WI 6274 RANDOLPH WI
2021-08-04 920-701 1XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 LOMIRA WI
2021-07-27 920-679 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C WATERTOWN WI
2021-07-26 920-673 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks → ONVOY, LLC - WI 225C SISTER BAY WI
2021-07-15 920-641 0–9 XXXall 10 · 8 holders which blocks → PENINSULA FIBER NETWORK, LLC - WI 841H GREEN BAY WI
2021-07-14 920-514 1XXX4XXX8XXX · 3 holders which blocks → ONVOY, LLC - WI 225C COLEMAN WI
2021-07-14 920-537 2XXX7XXX · 2 holders which blocks → ONVOY, LLC - WI 225C HORICON WI
2021-07-14 920-546 4XXX6XXX · 2 holders which blocks → ONVOY, LLC - WI 225C HUSTISFORD WI
2021-07-14 920-575 0XXX5XXX7XXX · 3 holders which blocks → ONVOY, LLC - WI 225C JUNEAU WI
2021-07-14 920-612 0XXX2XXX3XXX · 3 holders which blocks → ONVOY, LLC - WI 225C REESEVILLE WI
2021-07-06 920-506 0XXX7XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H GREENBUSH WI
2021-07-02 920-270 0XXX1XXX2XXX6XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H EDEN WI
2021-06-23 920-307 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - WI 225C WAUPUN WI
2021-05-27 920-607 0XXX1XXX4XXX5XXX7XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CAMPBELSPT WI
2021-05-26 920-790 0XXX1XXX2XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NEWFRANKEN WI
2021-05-03 920-480 0–9 XXXall 10 · 5 holders which blocks → IP HORIZON LLC 515J GREEN BAY WI
2021-03-02 920-357 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 DE PERE WI
2020-12-21 920-314 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - WI 225C COLLINS WI
2020-10-20 920-518 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 DE PERE WI
2020-10-15 920-512 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 APPLETON WI
2020-10-02 920-384 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J GREEN BAY WI
2020-09-30 920-417 0–9 XXXall 10 · 2 holders which blocks → AIRESPRING, INC. 996H GREEN BAY WI
2020-08-31 920-416 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J APPLETON WI
2020-08-05 920-932 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H GREEN BAY WI
2020-07-21 920-201 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J APPLETON WI
2020-04-27 920-669 0XXX1XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MAYVILLE WI
2019-10-23 920-510 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H GREEN BAY WI
2019-10-15 920-990 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C RIPON WI
2019-10-10 920-690 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C LTL CHUTE WI
2019-10-10 920-890 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - WI 225C EGG HARBOR WI
2019-09-05 920-601 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F WRIGHTSTN WI
2019-05-23 920-678 4XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ST CLOUD WI
2019-04-18 920-930 0–9 XXXall 10 · 6 holders which blocks → COMMIO, LLC 939H GREEN BAY WI
2019-04-15 920-501 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2019-03-14 920-802 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C SHEBOGNFLS WI
2018-12-13 920-977 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GREEN BAY WI
2018-12-03 920-895 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 KEWAUNEE WI
2018-10-30 920-502 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NEENAH WI
2018-10-09 920-808 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F OSHKOSH WI
2018-08-22 920-937 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → UNITED STATES CELLULAR - WI 6274 OAKFIELD WI
2018-08-09 920-413 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 DE PERE WI
2018-08-06 920-441 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K APPLETON WI
2018-06-22 920-401 0–9 XXXall 10 · 5 holders which blocks → INTEGRATED PATH COMMUNICATIONS, LLC - WI 766H GREEN BAY WI
2018-01-25 920-442 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2017-12-20 920-677 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWFRANKEN WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.