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
2011-05-23 508-244-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MILFORD MA
2011-05-23 508-948-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTBORO MA
2011-05-20 508-827-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J HYANNIS MA
2011-05-18 508-681-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 OSTERVILLE MA
2011-05-16 508-282-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD MA
2011-05-16 508-282-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD MA
2011-05-09 508-545-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NATICK MA
2011-05-09 508-969-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E FRAMINGHAM MA
2011-05-05 508-209-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PLYMOUTH MA
2011-05-05 508-782-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2011-04-04 508-988-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2011-03-14 508-296-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CATAUMET MA
2011-03-14 508-474-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HOLLISTON MA
2011-03-14 508-622-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NORTON MA
2011-03-03 508-599-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WESTBORO MA
2011-03-03 508-861-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FRAMINGHAM MA
2011-02-14 508-416-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D FRAMINGHAM MA
2011-02-14 508-441-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWBEDFORD MA
2011-02-14 508-916-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E FALL RIVER MA
2011-02-11 508-296-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CATAUMET MA
2011-02-11 508-669-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DIGHTON MA
2011-02-11 508-938-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WESTPORT MA
2011-02-10 508-622-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NORTON MA
2011-01-17 508-381-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MILFORD MA
2011-01-13 508-918-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRANKLIN MA
2011-01-12 508-321-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MEDWAY MA
2011-01-12 508-731-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MA 316E OXFORD MA
2011-01-07 508-970-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARLBORO MA
2011-01-05 508-661-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2011-01-05 508-808-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2010-12-20 508-581-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MILLBURY MA
2010-12-13 508-919-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NORTHBORO MA
2010-12-13 508-986-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WESTBORO MA
2010-12-03 508-474-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HOLLISTON MA
2010-11-09 508-859-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEICESTER MA
2010-11-02 508-244-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MILFORD MA
2010-11-02 508-988-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2010-10-26 508-232-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BROCKTON MA
2010-10-14 508-329-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WESTBORO MA
2010-10-12 508-623-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D FOXBORO MA
2010-10-12 508-623-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D FOXBORO MA
2010-10-12 508-623-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D FOXBORO MA
2010-10-12 508-623-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D FOXBORO MA
2010-10-12 508-623-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D FOXBORO MA
2010-10-12 508-772-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FOXBORO MA
2010-09-22 508-417-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HOPKINTON MA
2010-09-22 508-444-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E FALMOUTH MA
2010-09-20 508-689-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J FALL RIVER MA
2010-09-15 508-244-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD MA
2010-09-14 508-513-9XXX 9000–9999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 BROCKTON 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.