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
2005-04-22 508-283-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FRAMINGHAM MA
2005-04-22 508-441-8XXX 8000–8999Assigned METROPCS, INC. 5562 NEWBEDFORD MA
2005-04-22 508-441-9XXX 9000–9999Assigned METROPCS, INC. 5562 NEWBEDFORD MA
2005-04-21 508-348-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHATHAM MA
2005-04-21 508-403-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CATAUMET MA
2005-04-21 508-593-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHATHAM MA
2005-04-14 508-322-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WAREHAM MA
2005-04-13 508-844-7XXX 7000–7999Assigned METROPCS, INC. 5562 TAUNTON MA
2005-04-13 508-844-8XXX 8000–8999Assigned METROPCS, INC. 5562 TAUNTON MA
2005-04-11 508-214-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J WELLFLEET MA
2005-04-11 508-257-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SIASCONSET MA
2005-04-11 508-258-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J DENNIS MA
2005-04-11 508-348-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CHATHAM MA
2005-04-11 508-413-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PROVINCETN MA
2005-04-11 508-419-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J OSTERVILLE MA
2005-04-11 508-534-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HYANNIS MA
2005-04-11 508-680-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J NANTUCKET MA
2005-04-11 508-744-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BARNSTABLE MA
2005-04-06 508-907-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NATICK MA
2005-04-04 508-322-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WAREHAM MA
2005-03-29 508-210-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HOLDEN MA
2005-03-29 508-306-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HOLLISTON MA
2005-03-29 508-306-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HOLLISTON MA
2005-03-29 508-570-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FRANKLIN MA
2005-03-29 508-714-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WHITINSVL MA
2005-03-29 508-718-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FOXBORO MA
2005-03-29 508-718-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FOXBORO MA
2005-03-29 508-779-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J UXBRIDGE MA
2005-03-28 508-980-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHARLTON MA
2005-03-22 508-921-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WALPOLE MA
2005-03-22 508-921-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WALPOLE MA
2005-03-21 508-618-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 MANSFIELD MA
2005-03-21 508-618-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 MANSFIELD MA
2005-03-15 508-440-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FRANKLIN MA
2005-03-14 508-409-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ATTLEBORO MA
2005-03-14 508-409-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ATTLEBORO MA
2005-03-08 508-315-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J NATICK MA
2005-03-08 508-573-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MARLBORO MA
2005-03-08 508-589-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HOPKINTON MA
2005-03-08 508-589-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HOPKINTON MA
2005-03-08 508-599-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WESTBORO MA
2005-03-08 508-919-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J NORTHBORO MA
2005-03-07 508-340-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WORCESTER MA
2005-02-28 508-304-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WORCESTER MA
2005-02-28 508-510-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROCKTON MA
2005-02-18 508-214-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WELLFLEET MA
2005-02-18 508-214-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WELLFLEET MA
2005-02-18 508-332-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NANTUCKET MA
2005-02-18 508-332-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NANTUCKET MA
2005-02-18 508-709-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NORTHBORO 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.