NumberResearch Membership · Data 09/27/2026

Recent thousands-block assignments

4,019 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/27/2026

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
NEW CINGULAR WIRELESS PCS, LLC - DC 300
NEW CINGULAR WIRELESS PCS, LLC - IL 255
EXIANT COMMUNICATIONS LLC 245
ONVOY, LLC - CA 146
NEW CINGULAR WIRELESS PCS, LLC 135
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
2026-01-16 983-277-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-01-16 983-277-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-01-16 989-279-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUGHTONLK MI
2026-01-16 989-899-4XXX 4000–4999Assigned HD CARRIER LLC 321J SAGINAW MI
2026-01-16 989-899-5XXX 5000–5999Assigned HD CARRIER LLC 321J SAGINAW MI
2026-01-16 989-899-6XXX 6000–6999Assigned HD CARRIER LLC 321J SAGINAW MI
2026-01-15 217-919-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 QUINCY IL
2026-01-15 228-279-2XXX 2000–2999Assigned HD CARRIER LLC 321J GULFPORT MS
2026-01-15 228-279-3XXX 3000–3999Assigned HD CARRIER LLC 321J GULFPORT MS
2026-01-15 228-279-4XXX 4000–4999Assigned HD CARRIER LLC 321J GULFPORT MS
2026-01-15 309-984-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLOOMINGTN IL
2026-01-15 312-452-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-01-15 312-452-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-01-15 314-278-1XXX 1000–1999Assigned HD CARRIER LLC 321J KIRKWOOD MO
2026-01-15 314-278-2XXX 2000–2999Assigned HD CARRIER LLC 321J KIRKWOOD MO
2026-01-15 324-222-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2026-01-15 324-222-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2026-01-15 324-222-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2026-01-15 324-222-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2026-01-15 324-222-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2026-01-15 324-222-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2026-01-15 329-226-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C KINGSTON NY
2026-01-15 329-237-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C MONTICELLO NY
2026-01-15 332-316-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C NWYRCYZN01 NY
2026-01-15 332-316-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C NWYRCYZN01 NY
2026-01-15 332-316-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C NWYRCYZN01 NY
2026-01-15 332-316-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C NWYRCYZN01 NY
2026-01-15 332-316-7XXX 7000–7999Assigned ONVOY, LLC- NY 384C NWYRCYZN01 NY
2026-01-15 332-316-8XXX 8000–8999Assigned ONVOY, LLC- NY 384C NWYRCYZN01 NY
2026-01-15 332-316-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C NWYRCYZN01 NY
2026-01-15 380-290-2XXX 2000–2999Assigned HD CARRIER LLC 321J REYNOLDSBG OH
2026-01-15 380-290-3XXX 3000–3999Assigned HD CARRIER LLC 321J REYNOLDSBG OH
2026-01-15 406-918-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIBBY MT
2026-01-15 413-807-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J PALMER MA
2026-01-15 423-786-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F BLUFF CITY TN
2026-01-15 475-739-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WOLCOTT CT
2026-01-15 501-389-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J SEARCY AR
2026-01-15 501-444-4XXX 4000–4999Assigned EXIANT COMMUNICATIONS LLC 114J LITTLEROCK AR
2026-01-15 501-444-9XXX 9000–9999Assigned EXIANT COMMUNICATIONS LLC 114J LITTLEROCK AR
2026-01-15 501-504-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J CONWAY AR
2026-01-15 501-587-8XXX 8000–8999Assigned EXIANT COMMUNICATIONS LLC 114J LITTLEROCK AR
2026-01-15 509-587-8XXX 8000–8999Assigned EXIANT COMMUNICATIONS LLC 114J BREWSTER WA
2026-01-15 518-363-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C BALLSTNSPA NY
2026-01-15 557-238-2XXX 2000–2999Assigned HD CARRIER LLC 321J KIRKWOOD MO
2026-01-15 561-606-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DELRAY BCH FL
2026-01-15 571-740-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2026-01-15 571-740-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2026-01-15 571-740-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2026-01-15 571-740-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2026-01-15 586-735-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MT CLEMENS MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.