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
2010-09-03 508-557-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SEEKONK MA
2010-09-03 508-681-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J OSTERVILLE MA
2010-08-31 508-807-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BRIDGEWTR MA
2010-08-19 508-298-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRANKLIN MA
2010-08-11 508-202-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E FRAMINGHAM MA
2010-08-11 508-281-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARLBORO MA
2010-08-11 508-319-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NATICK MA
2010-08-11 508-422-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MILFORD MA
2010-08-11 508-506-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E OXFORD MA
2010-08-11 508-507-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E FRANKLIN MA
2010-08-11 508-534-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HYANNIS MA
2010-08-11 508-591-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E PLYMOUTH MA
2010-08-11 508-859-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LEICESTER MA
2010-08-09 508-663-6XXX 6000–6999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-08-09 508-663-7XXX 7000–7999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-08-09 508-663-8XXX 8000–8999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-08-09 508-663-9XXX 9000–9999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-08-05 508-815-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J HYANNIS MA
2010-08-03 508-948-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTBORO MA
2010-07-28 508-458-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MILFORD MA
2010-07-28 508-571-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NORTHBORO MA
2010-07-28 508-731-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E OXFORD MA
2010-07-28 508-812-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NO SWANSEA MA
2010-07-28 508-851-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MANSFIELD MA
2010-07-26 508-639-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOUTHGATE MA
2010-07-26 508-738-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E TAUNTON MA
2010-07-26 508-986-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WESTBORO MA
2010-07-21 508-266-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WHITINSVL MA
2010-07-16 508-719-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SHREWSBURY MA
2010-07-13 508-343-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SEEKONK MA
2010-07-12 508-456-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J EBRIDGEWTR MA
2010-07-02 508-209-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PLYMOUTH MA
2010-06-24 508-840-4XXX 4000–4999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2010-05-25 508-213-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WEBSTER MA
2010-05-25 508-455-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ATTLEBORO MA
2010-05-25 508-928-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BLACKSTONE MA
2010-05-25 508-933-3XXX 3000–3999Assigned METROPCS, INC. 5562 ROCHESTER MA
2010-05-25 508-933-9XXX 9000–9999Assigned METROPCS, INC. 5562 ROCHESTER MA
2010-05-17 508-973-0XXX 0000–0999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-1XXX 1000–1999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-2XXX 2000–2999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-3XXX 3000–3999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-4XXX 4000–4999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-5XXX 5000–5999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-6XXX 6000–6999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-7XXX 7000–7999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-8XXX 8000–8999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-17 508-973-9XXX 9000–9999Assigned VERIZON NEW ENGLAND INC. 9102 FALL RIVER MA
2010-05-07 508-901-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 NANTUCKET MA
2010-05-05 508-782-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J FRAMINGHAM 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.