NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 978
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 2
EXIANT COMMUNICATIONS LLC 1
BANDWIDTH.COM CLEC, LLC - MA 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
2015-12-02 978-541-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H ATHOL MA
2015-12-02 978-543-6XXX 6000–6999Assigned BARR TELL USA, INC. - MA 732H NO READING MA
2015-12-02 978-580-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H CONCORD MA
2015-12-02 978-593-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H ATHOLFKLN MA
2015-12-02 978-599-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H SALEM MA
2015-12-02 978-625-8XXX 8000–8999Assigned BARR TELL USA, INC. - MA 732H BILLERICA MA
2015-12-02 978-626-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HAMILTON MA
2015-12-02 978-699-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H ANDOVER MA
2015-12-02 978-708-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H GROTON MA
2015-12-02 978-722-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H LAWRENCE MA
2015-12-02 978-754-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H GARDNER MA
2015-12-02 978-757-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H AYER MA
2015-12-02 978-795-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H ACTON MA
2015-12-02 978-879-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H GLOUCESTER MA
2015-12-02 978-881-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ACTON MA
2015-12-02 978-904-9XXX 9000–9999Assigned BARR TELL USA, INC. - MA 732H NEWBURYPT MA
2015-12-02 978-906-7XXX 7000–7999Assigned BARR TELL USA, INC. - MA 732H FITCHBURG MA
2015-12-02 978-907-7XXX 7000–7999Assigned BARR TELL USA, INC. - MA 732H DANVERS MA
2015-12-02 978-954-9XXX 9000–9999Assigned BARR TELL USA, INC. - MA 732H LOWELL MA
2015-12-02 978-971-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H HAVERHILL MA
2015-12-02 978-990-9XXX 9000–9999Assigned BARR TELL USA, INC. - MA 732H LEOMINSTER MA
2015-11-12 978-854-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2015-11-11 978-972-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D DANVERS MA
2015-11-09 978-754-5XXX 5000–5999Assigned METROPCS, INC. 5562 GARDNER MA
2015-11-09 978-972-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DANVERS MA
2015-11-06 978-954-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOWELL MA
2015-11-06 978-990-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEOMINSTER MA
2015-11-05 978-954-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LOWELL MA
2015-10-22 978-971-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAVERHILL MA
2015-10-22 978-971-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAVERHILL MA
2015-10-22 978-971-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAVERHILL MA
2015-10-21 978-883-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ASHBURNHAM MA
2015-10-14 978-429-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ACTON MA
2015-10-14 978-489-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ACTON MA
2015-10-14 978-491-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J GLOUCESTER MA
2015-10-05 978-536-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PEABODY MA
2015-10-01 978-277-4XXX 4000–4999Assigned IP HORIZON LLC 515J TEMPLETON MA
2015-10-01 978-321-1XXX 1000–1999Assigned IP HORIZON LLC 515J WINCHENDON MA
2015-10-01 978-419-8XXX 8000–8999Assigned IP HORIZON LLC 515J TYNGSBORO MA
2015-10-01 978-481-9XXX 9000–9999Assigned IP HORIZON LLC 515J PRINCETON MA
2015-10-01 978-510-8XXX 8000–8999Assigned IP HORIZON LLC 515J W NEWBURY MA
2015-10-01 978-523-1XXX 1000–1999Assigned IP HORIZON LLC 515J TOWNSEND MA
2015-10-01 978-647-8XXX 8000–8999Assigned IP HORIZON LLC 515J TOPSFIELD MA
2015-10-01 978-668-9XXX 9000–9999Assigned IP HORIZON LLC 515J WESTMINSTR MA
2015-10-01 978-793-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MAYNARD MA
2015-10-01 978-813-0XXX 0000–0999Assigned IP HORIZON LLC 515J SHIRLEY MA
2015-10-01 978-843-6XXX 6000–6999Assigned IP HORIZON LLC 515J STERLING MA
2015-10-01 978-903-8XXX 8000–8999Assigned IP HORIZON LLC 515J ROWLEY MA
2015-10-01 978-917-1XXX 1000–1999Assigned IP HORIZON LLC 515J SUDBURY MA
2015-09-28 978-252-9XXX 9000–9999Assigned IP HORIZON LLC 515J ASHBURNHAM 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.