NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 508
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 4
PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 1
OMNIPOINT MIAMI E LICENSE, LLC 1
AHOI 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
2004-07-07 508-439-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTBORO MA
2004-07-07 508-505-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALPOLE MA
2004-07-07 508-717-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWBEDFORD MA
2004-07-02 508-558-6XXX 6000–6999Assigned METROPCS, INC. 5562 FALL RIVER MA
2004-07-02 508-558-8XXX 8000–8999Assigned METROPCS, INC. 5562 FALL RIVER MA
2004-07-02 508-815-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 HYANNIS MA
2004-06-23 508-966-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BELLINGHAM MA
2004-06-10 508-449-2XXX 2000–2999Assigned TC SYSTEMS, INC. 7135 MARLBORO MA
2004-06-10 508-683-4XXX 4000–4999Assigned TC SYSTEMS, INC. 7135 MARLBORO MA
2004-06-10 508-683-5XXX 5000–5999Assigned TC SYSTEMS, INC. 7135 MARLBORO MA
2004-06-10 508-683-6XXX 6000–6999Assigned TC SYSTEMS, INC. 7135 MARLBORO MA
2004-06-10 508-743-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BUZZARDSBY MA
2004-06-04 508-779-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K UXBRIDGE MA
2004-06-02 508-439-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTBORO MA
2004-05-19 508-266-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WHITINSVL MA
2004-05-19 508-304-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WORCESTER MA
2004-05-19 508-407-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K AUBURN MA
2004-05-19 508-434-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CHARLTON MA
2004-05-19 508-461-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WEBSTER MA
2004-05-19 508-476-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K E DOUGLAS MA
2004-05-19 508-637-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NOBROOKFLD MA
2004-05-19 508-892-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LEICESTER MA
2004-05-19 508-917-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MILLBURY MA
2004-05-14 508-250-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 FRAMINGHAM MA
2004-05-12 508-503-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 PLYMOUTH MA
2004-05-12 508-731-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OXFORD MA
2004-05-12 508-731-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OXFORD MA
2004-05-04 508-717-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWBEDFORD MA
2004-04-26 508-558-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FALL RIVER MA
2004-04-23 508-738-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J TAUNTON MA
2004-04-16 508-772-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J FOXBORO MA
2004-04-15 508-717-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWBEDFORD MA
2004-04-14 508-299-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J FALMOUTH MA
2004-04-14 508-802-2XXX 2000–2999Assigned METROPCS, INC. 5562 TAUNTON MA
2004-04-14 508-802-3XXX 3000–3999Assigned METROPCS, INC. 5562 TAUNTON MA
2004-04-06 508-207-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBEDFORD MA
2004-04-06 508-436-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J BROCKTON MA
2004-03-11 508-938-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WESTPORT MA
2004-03-08 508-809-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J NO ATTLEBO MA
2004-02-12 508-743-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BUZZARDSBY MA
2004-02-11 508-503-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J PLYMOUTH MA
2004-02-10 508-463-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ATTLEBORO MA
2004-02-10 508-463-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ATTLEBORO MA
2004-02-10 508-463-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ATTLEBORO MA
2004-02-10 508-463-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ATTLEBORO MA
2004-02-10 508-468-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2004-02-10 508-468-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2004-02-10 508-468-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2004-02-10 508-692-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TAUNTON MA
2004-02-10 508-692-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TAUNTON MA

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.