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
2013-03-18 508-792-8XXX 8000–8999Assigned IP HORIZON LLC 515J WORCESTER MA
2013-03-15 508-306-7XXX 7000–7999Assigned IP HORIZON LLC 515J HOLLISTON MA
2013-03-15 508-690-3XXX 3000–3999Assigned IP HORIZON LLC 515J EBRIDGEWTR MA
2013-03-06 508-861-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2013-03-04 508-637-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NOBROOKFLD MA
2013-02-21 508-506-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OXFORD MA
2013-02-20 508-530-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRANKLIN MA
2013-02-19 508-231-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D FRAMINGHAM MA
2013-02-19 508-271-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D FRAMINGHAM MA
2013-01-30 508-538-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARION MA
2013-01-30 508-745-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NATICK MA
2013-01-18 508-903-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NATICK MA
2013-01-15 508-416-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2013-01-15 508-416-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2013-01-15 508-416-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2013-01-15 508-782-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2013-01-02 508-329-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WESTBORO MA
2013-01-02 508-861-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2013-01-02 508-861-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2013-01-02 508-861-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2012-12-18 508-570-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J FRANKLIN MA
2012-12-13 508-639-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D SOUTHGATE MA
2012-12-13 508-684-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D VINEYRDHVN MA
2012-12-13 508-841-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D SHREWSBURY MA
2012-12-12 508-433-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D NATICK MA
2012-12-12 508-500-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D MARION MA
2012-12-12 508-557-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D SEEKONK MA
2012-12-12 508-812-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D NO SWANSEA MA
2012-12-11 508-456-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D EBRIDGEWTR MA
2012-12-11 508-544-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D HOPKINTON MA
2012-12-11 508-568-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D HYANNIS MA
2012-12-11 508-859-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D LEICESTER MA
2012-12-06 508-630-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MARLBORO MA
2012-12-06 508-745-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NATICK MA
2012-12-06 508-861-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FRAMINGHAM MA
2012-12-06 508-884-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 TAUNTON MA
2012-12-05 508-848-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2012-12-05 508-848-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2012-11-30 508-209-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E PLYMOUTH MA
2012-11-16 508-903-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NATICK MA
2012-11-02 508-745-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NATICK MA
2012-11-02 508-745-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NATICK MA
2012-11-02 508-745-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NATICK MA
2012-11-02 508-918-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRANKLIN MA
2012-11-02 508-918-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRANKLIN MA
2012-10-26 508-434-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLTON MA
2012-10-26 508-535-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EASTON MA
2012-10-26 508-591-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J PLYMOUTH MA
2012-10-24 508-502-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WORCESTER MA
2012-10-18 508-321-8XXX 8000–8999Assigned TC SYSTEMS, INC. 7135 MEDWAY 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.