NumberResearch Membership · Data 09/29/2026

Recent thousands-block assignments

4,094 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/29/2026

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 325
NEW CINGULAR WIRELESS PCS, LLC - IL 261
EXIANT COMMUNICATIONS LLC 245
ONVOY, LLC - CA 144
NEW CINGULAR WIRELESS PCS, LLC - GA 136
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
2025-09-09 401-381-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W WARWICK RI
2025-09-09 413-490-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 GREENFIELD MA
2025-09-09 423-659-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K COPPERBSIN TN
2025-09-09 423-671-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2025-09-09 423-671-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2025-09-09 423-671-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2025-09-09 423-671-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2025-09-09 424-790-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J INGLEWOOD CA
2025-09-09 424-790-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J INGLEWOOD CA
2025-09-09 440-869-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HILLCREST OH
2025-09-09 440-869-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HILLCREST OH
2025-09-09 458-319-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 JUNCTIONCY OR
2025-09-09 458-349-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BAKER OR
2025-09-09 501-755-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 QUITMAN AR
2025-09-09 502-820-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LA GRANGE KY
2025-09-09 502-820-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LA GRANGE KY
2025-09-09 502-820-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LA GRANGE KY
2025-09-09 567-466-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K COONEY OH
2025-09-09 567-490-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2025-09-09 567-490-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2025-09-09 567-490-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2025-09-09 620-968-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WELLINGTON KS
2025-09-09 626-745-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SIERRAMADR CA
2025-09-09 626-745-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SIERRAMADR CA
2025-09-09 636-393-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PACIFIC MO
2025-09-09 719-514-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 BUENAVISTA CO
2025-09-09 734-885-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LIVONIA MI
2025-09-09 806-607-9XXX 9000–9999Assigned AT&T - LOCAL 7421 ABERNATHY TX
2025-09-09 806-909-9XXX 9000–9999Assigned AT&T - LOCAL 7421 GRUVER TX
2025-09-09 816-962-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 BLUE SPG MO
2025-09-09 821-777-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2025-09-09 864-781-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 PIEDMONT SC
2025-09-09 904-850-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J JACKSONVL FL
2025-09-09 904-850-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J JACKSONVL FL
2025-09-09 904-869-1XXX 1000–1999Assigned BOOST SUBSCRIBERCO L.L.C. 490J JACKSONVL FL
2025-09-09 914-691-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WSCHSTZN01 NY
2025-09-09 915-456-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 FABENS TX
2025-09-09 920-963-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2025-09-09 920-963-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2025-09-09 937-924-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 MARYSVILLE OH
2025-09-08 207-508-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRUNSWICK ME
2025-09-08 207-508-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRUNSWICK ME
2025-09-08 207-739-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORWAY ME
2025-09-08 208-483-6XXX 6000–6999Assigned COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 2214 IRWIN ID
2025-09-08 239-492-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J FORT MYERS FL
2025-09-08 308-408-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LEXINGTON NE
2025-09-08 321-513-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TITUSVILLE FL
2025-09-08 332-299-0XXX 0000–0999Assigned BOOST SUBSCRIBERCO L.L.C. 490J NWYRCYZN01 NY
2025-09-08 336-280-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 REIDSVILLE NC
2025-09-08 414-451-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MILWAUKZN1 WI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.