NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2006-01-05 508-983-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTBORO MA
2006-01-03 508-938-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WESTPORT MA
2005-12-28 508-644-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ASSONET MA
2005-12-28 508-714-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WHITINSVL MA
2005-12-28 508-809-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NO ATTLEBO MA
2005-12-22 508-304-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WORCESTER MA
2005-12-13 508-916-9XXX 9000–9999Assigned METROPCS, INC. 5562 FALL RIVER MA
2005-12-12 508-658-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MARLBORO MA
2005-12-09 508-332-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NANTUCKET MA
2005-12-09 508-332-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NANTUCKET MA
2005-12-09 508-342-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ATTLEBORO MA
2005-12-09 508-342-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ATTLEBORO MA
2005-12-08 508-567-7XXX 7000–7999Assigned METROPCS, INC. 5562 FALL RIVER MA
2005-12-07 508-404-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALPOLE MA
2005-12-01 508-562-8XXX 8000–8999Assigned METROPCS, INC. 5562 BROCKTON MA
2005-11-29 508-466-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J NORTHBORO MA
2005-11-17 508-377-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 MILFORD MA
2005-11-16 508-617-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FALL RIVER MA
2005-11-11 508-205-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTON MA
2005-11-11 508-205-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTON MA
2005-11-11 508-258-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DENNIS MA
2005-11-07 508-459-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J WORCESTER MA
2005-11-03 508-468-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROCKTON MA
2005-11-01 508-348-4XXX 4000–4999Assigned METROPCS, INC. 5562 CHATHAM MA
2005-10-31 508-298-2XXX 2000–2999Assigned METROPCS, INC. 5562 FRANKLIN MA
2005-10-31 508-413-0XXX 0000–0999Assigned METROPCS, INC. 5562 PROVINCETN MA
2005-10-28 508-202-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J FRAMINGHAM MA
2005-10-20 508-392-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J CATAUMET MA
2005-10-19 508-304-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WORCESTER MA
2005-10-13 508-281-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J MARLBORO MA
2005-09-30 508-232-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BROCKTON MA
2005-09-30 508-232-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BROCKTON MA
2005-09-27 508-213-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WEBSTER MA
2005-09-27 508-386-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 TAUNTON MA
2005-09-27 508-425-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WORCESTER MA
2005-09-27 508-503-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 PLYMOUTH MA
2005-09-27 508-692-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 TAUNTON MA
2005-09-23 508-441-7XXX 7000–7999Assigned METROPCS, INC. 5562 NEWBEDFORD MA
2005-09-22 508-452-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MANSFIELD MA
2005-09-22 508-452-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MANSFIELD MA
2005-09-19 508-544-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOPKINTON MA
2005-09-16 508-691-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORTHBORO MA
2005-09-13 508-215-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 FRAMINGHAM MA
2005-09-13 508-250-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 FRAMINGHAM MA
2005-09-02 508-657-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BELLINGHAM MA
2005-09-02 508-686-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HOPKINTON MA
2005-09-02 508-844-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TAUNTON MA
2005-08-30 508-232-5XXX 5000–5999Assigned METROPCS, INC. 5562 BROCKTON MA
2005-08-30 508-441-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBEDFORD MA
2005-08-29 508-809-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J NO ATTLEBO MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.