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
2015-09-28 978-312-0XXX 0000–0999Assigned IP HORIZON LLC 515J IPSWICH MA
2015-09-28 978-344-9XXX 9000–9999Assigned IP HORIZON LLC 515J MAYNARD MA
2015-09-28 978-403-1XXX 1000–1999Assigned IP HORIZON LLC 515J LUNENBURG MA
2015-09-28 978-504-8XXX 8000–8999Assigned IP HORIZON LLC 515J AMESBURY MA
2015-09-28 978-541-0XXX 0000–0999Assigned IP HORIZON LLC 515J ATHOL MA
2015-09-28 978-544-4XXX 4000–4999Assigned IP HORIZON LLC 515J ORANGE MA
2015-09-28 978-586-8XXX 8000–8999Assigned IP HORIZON LLC 515J BOLTON MA
2015-09-28 978-636-2XXX 2000–2999Assigned IP HORIZON LLC 515J BARRE MA
2015-09-28 978-653-9XXX 9000–9999Assigned IP HORIZON LLC 515J HAMILTON MA
2015-09-28 978-756-8XXX 8000–8999Assigned IP HORIZON LLC 515J PETERSHAM MA
2015-09-28 978-796-8XXX 8000–8999Assigned IP HORIZON LLC 515J AYER MA
2015-09-28 978-801-6XXX 6000–6999Assigned IP HORIZON LLC 515J ESSEX MA
2015-09-28 978-904-8XXX 8000–8999Assigned IP HORIZON LLC 515J NEWBURYPT MA
2015-09-28 978-913-5XXX 5000–5999Assigned IP HORIZON LLC 515J ASHBY MA
2015-09-24 978-409-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ANDOVER MA
2015-09-24 978-573-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2015-09-24 978-573-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2015-09-24 978-717-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2015-09-22 978-650-0XXX 0000–0999Assigned IP HORIZON LLC 515J PEPPERELL MA
2015-09-22 978-999-4XXX 4000–4999Assigned IP HORIZON LLC 515J ROCKPORT MA
2015-09-16 978-437-8XXX 8000–8999Assigned IP HORIZON LLC 515J BILLERICA MA
2015-09-15 978-965-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAWRENCE MA
2015-09-14 978-227-7XXX 7000–7999Assigned METROPCS, INC. 5562 LEOMINSTER MA
2015-09-10 978-903-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ROWLEY MA
2015-09-03 978-447-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WILMINGTON MA
2015-09-03 978-816-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BEVERLY MA
2015-08-28 978-954-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOWELL MA
2015-08-28 978-990-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEOMINSTER MA
2015-08-27 978-558-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOLTON MA
2015-08-25 978-248-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ATHOL MA
2015-08-25 978-312-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E IPSWICH MA
2015-08-25 978-419-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E TYNGSBORO MA
2015-08-25 978-668-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WESTMINSTR MA
2015-08-25 978-763-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HUDSON MA
2015-08-25 978-872-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HAVERHILL MA
2015-08-19 978-708-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 GROTON MA
2015-08-17 978-326-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2015-08-17 978-717-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2015-08-12 978-990-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LEOMINSTER MA
2015-08-03 978-890-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ESSEX MA
2015-07-22 978-493-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MAYNARD MA
2015-07-21 978-243-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MAYNARD MA
2015-07-21 978-986-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J TOPSFIELD MA
2015-07-17 978-999-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D ROCKPORT MA
2015-07-16 978-510-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J W NEWBURY MA
2015-07-16 978-813-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SHIRLEY MA
2015-07-14 978-668-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WESTMINSTR MA
2015-07-10 978-572-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J NEWBURYPT MA
2015-07-09 978-830-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K ATHOL MA
2015-06-30 978-641-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HAVERHILL 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.