NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 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 413
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6
BANDWIDTH.COM CLEC, LLC - MA 5
NEW CINGULAR WIRELESS PCS, LLC - DC 1
MCIMETRO ACCESS TRANSMISSION SERVICES 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
2014-09-19 413-444-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D BERNARDSTN MA
2014-09-19 413-444-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D BERNARDSTN MA
2014-09-18 413-449-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D PITTSFIELD MA
2014-09-18 413-449-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D PITTSFIELD MA
2014-09-17 413-322-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J HOLYOKE MA
2014-09-17 413-406-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D AMHERST MA
2014-09-17 413-406-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D AMHERST MA
2014-09-17 413-717-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GREATBNGTN MA
2014-09-17 413-935-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D LONGMEADOW MA
2014-09-17 413-935-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D LONGMEADOW MA
2014-09-16 413-512-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D GREENFIELD MA
2014-09-16 413-512-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D GREENFIELD MA
2014-09-16 413-998-8XXX 8000–8999Assigned IP HORIZON LLC 515J SOUTHWICK MA
2014-09-12 413-676-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 7103 TURNERSFLS MA
2014-09-11 413-378-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2014-09-05 413-378-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHICOPEE MA
2014-08-29 413-370-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PALMER MA
2014-08-29 413-370-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PALMER MA
2014-08-29 413-370-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PALMER MA
2014-08-28 413-570-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHAMPTN MA
2014-08-14 413-570-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NORTHAMPTN MA
2014-08-13 413-727-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NORTHAMPTN MA
2014-08-07 413-770-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PITTSFIELD MA
2014-08-05 413-275-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLYOKE MA
2014-08-05 413-302-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-316-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2014-08-05 413-664-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHADAMS MA
2014-07-31 413-993-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SO DEERFLD MA
2014-07-29 413-825-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E AMHRSTFKLN MA
2014-07-21 413-444-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BERNARDSTN MA
2014-07-18 413-666-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D GRANVILLE MA
2014-07-15 413-385-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D LUDLOW MA
2014-07-15 413-449-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D PITTSFIELD MA
2014-07-15 413-474-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D CHICOPEE MA
2014-07-15 413-759-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D ELONGMEDOW MA
2014-07-15 413-865-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D LEE MA
2014-07-10 413-333-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2014-06-27 413-223-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J GREENFIELD MA
2014-06-25 413-662-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NORTHADAMS MA
2014-06-24 413-394-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J LEE MA
2014-06-18 413-406-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2014-06-18 413-923-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 7103 NORTHAMPTN MA
2014-06-13 413-404-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST 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.