NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

4,019 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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
2026-02-25 413-524-1XXX 1000–1999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F SPRINGFLD MA
2026-02-25 413-524-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2026-02-25 417-488-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOLIVAR MO
2026-02-25 417-594-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON MO
2026-02-25 430-272-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATHENS TX
2026-02-25 432-205-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDLAND TX
2026-02-25 432-205-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDLAND TX
2026-02-25 432-205-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDLAND TX
2026-02-25 432-205-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDLAND TX
2026-02-25 432-205-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDLAND TX
2026-02-25 435-278-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 ENTERPRISE UT
2026-02-25 435-366-3XXX 3000–3999Assigned WIDE VOICE, LLC - UT 659H ST GEORGE UT
2026-02-25 435-366-4XXX 4000–4999Assigned WIDE VOICE, LLC - UT 659H ST GEORGE UT
2026-02-25 478-455-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SWAINSBORO GA
2026-02-25 484-839-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J KUTZTOWN PA
2026-02-25 484-857-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J KEMPTON PA
2026-02-25 501-549-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PALARM AR
2026-02-25 504-981-0XXX 0000–0999Assigned WAVENATION, LLC 700J NEWORLEANS LA
2026-02-25 510-310-0XXX 0000–0999Assigned SEQUOIA WIRELESS, LLC 385L HAYWARD CA
2026-02-25 510-310-1XXX 1000–1999Assigned SEQUOIA WIRELESS, LLC 385L HAYWARD CA
2026-02-25 510-310-5XXX 5000–5999Assigned SEQUOIA WIRELESS, LLC 385L HAYWARD CA
2026-02-25 510-310-9XXX 9000–9999Assigned SEQUOIA WIRELESS, LLC 385L HAYWARD CA
2026-02-25 540-450-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WINCHESTER VA
2026-02-25 563-822-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER IA
2026-02-25 571-708-6XXX 6000–6999Assigned TELNYX LLC 073H DALE CITY VA
2026-02-25 572-278-1XXX 1000–1999Assigned BOOST SUBSCRIBERCO L.L.C. 490J OKLA CITY OK
2026-02-25 572-278-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J OKLA CITY OK
2026-02-25 573-890-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 FULTON MO
2026-02-25 603-327-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 SALEM NH
2026-02-25 603-351-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 GOFFSTOWN NH
2026-02-25 603-472-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 BEDFORD NH
2026-02-25 603-916-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 MEREDITH NH
2026-02-25 610-605-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J PHPHSBZN13 PA
2026-02-25 610-641-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TOPTON PA
2026-02-25 610-946-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J PHPHSBZN13 PA
2026-02-25 641-200-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLES CY IA
2026-02-25 660-684-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 JAMESPORT MO
2026-02-25 662-817-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW ALBANY MS
2026-02-25 681-558-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-558-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-558-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-558-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-559-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-559-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-559-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-579-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-579-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-994-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-994-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2026-02-25 681-994-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.