NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 920
ONVOY, LLC - WI 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 2
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
T-MOBILE USA, INC. 1
INTRADO COMMUNICATIONS, LLC 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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-02-13 920-599-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F LENA WI
2019-02-11 920-335-6XXX 6000–6999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F SHEBOGNFLS WI
2019-02-07 920-404-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2019-01-23 920-404-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 APPLETON WI
2019-01-22 920-516-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 OCONTO WI
2019-01-18 920-977-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2019-01-18 920-977-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2019-01-03 920-977-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2019-01-03 920-977-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2018-12-19 920-598-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 GILLETT WI
2018-12-17 920-977-9XXX 9000–9999Assigned METROPCS, INC. 5562 GREEN BAY WI
2018-12-12 920-374-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MANITOWOC WI
2018-12-11 920-228-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SEYMOUR WI
2018-12-04 920-895-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 KEWAUNEE WI
2018-11-29 920-505-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WEYAUWEGA WI
2018-11-29 920-557-4XXX 4000–4999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F BEAVER DAM WI
2018-11-27 920-401-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2018-11-27 920-401-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2018-11-27 920-401-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2018-11-27 920-888-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2018-11-09 920-389-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F NEW LONDON WI
2018-10-31 920-502-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K NEENAH WI
2018-10-26 920-413-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DE PERE WI
2018-10-25 920-401-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K GREEN BAY WI
2018-10-25 920-441-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 APPLETON WI
2018-10-10 920-808-9XXX 9000–9999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F OSHKOSH WI
2018-10-04 920-677-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWFRANKEN WI
2018-10-03 920-335-5XXX 5000–5999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F SHEBOGNFLS WI
2018-10-03 920-463-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F RANDOLPH WI
2018-10-02 920-389-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F NEW LONDON WI
2018-10-02 920-396-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2018-10-02 920-401-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2018-10-02 920-486-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEENAH WI
2018-10-01 920-290-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BERLIN WI
2018-09-27 920-228-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C SEYMOUR WI
2018-09-27 920-399-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C OCONTO FLS WI
2018-09-27 920-481-1XXX 1000–1999Assigned ONVOY, LLC - WI 225C PRINCETON WI
2018-09-27 920-516-1XXX 1000–1999Assigned ONVOY, LLC - WI 225C OCONTO WI
2018-09-27 920-525-1XXX 1000–1999Assigned ONVOY, LLC - WI 225C NICHOLS WI
2018-09-27 920-566-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C REDGRANITE WI
2018-09-27 920-667-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C READFIELD WI
2018-09-27 920-677-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C NEWFRANKEN WI
2018-09-27 920-896-9XXX 9000–9999Assigned ONVOY, LLC - WI 225C RIPON WI
2018-09-26 920-247-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GREEN BAY WI
2018-09-26 920-401-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GREEN BAY WI
2018-09-25 920-294-1XXX 1000–1999Assigned ONVOY, LLC - WI 225C GREEN LAKE WI
2018-09-25 920-367-1XXX 1000–1999Assigned ONVOY, LLC - WI 225C DENMARK WI
2018-09-25 920-536-9XXX 9000–9999Assigned ONVOY, LLC - WI 225C LUXEMBURG WI
2018-09-25 920-591-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C COLEMAN WI
2018-09-25 920-594-9XXX 9000–9999Assigned ONVOY, LLC - WI 225C LARSEN WI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.