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
2016-08-10 978-438-4XXX 4000–4999Assigned HD CARRIER LLC 321J PEABODY MA
2016-08-10 978-438-5XXX 5000–5999Assigned HD CARRIER LLC 321J PEABODY MA
2016-08-10 978-966-5XXX 5000–5999Assigned HD CARRIER LLC 321J DANVERS MA
2016-08-10 978-966-6XXX 6000–6999Assigned HD CARRIER LLC 321J DANVERS MA
2016-08-10 978-966-7XXX 7000–7999Assigned HD CARRIER LLC 321J DANVERS MA
2016-08-10 978-966-9XXX 9000–9999Assigned HD CARRIER LLC 321J DANVERS MA
2016-07-22 978-224-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SALEM MA
2016-07-22 978-243-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MAYNARD MA
2016-07-07 978-493-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MAYNARD MA
2016-07-05 978-588-3XXX 3000–3999Assigned VERIZON NEW ENGLAND INC. 9102 AYER MA
2016-07-05 978-588-4XXX 4000–4999Assigned VERIZON NEW ENGLAND INC. 9102 AYER MA
2016-07-05 978-588-5XXX 5000–5999Assigned VERIZON NEW ENGLAND INC. 9102 AYER MA
2016-07-05 978-588-6XXX 6000–6999Assigned VERIZON NEW ENGLAND INC. 9102 AYER MA
2016-07-05 978-588-7XXX 7000–7999Assigned VERIZON NEW ENGLAND INC. 9102 AYER MA
2016-06-27 978-847-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEOMINSTER MA
2016-06-20 978-802-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LAWRENCE MA
2016-06-09 978-594-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
2016-06-09 978-594-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
2016-06-06 978-321-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WINCHENDON MA
2016-06-06 978-721-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ATHOL MA
2016-06-03 978-438-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2016-06-03 978-438-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2016-06-03 978-438-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PEABODY MA
2016-06-03 978-908-3XXX 3000–3999Assigned IP HORIZON LLC 515J ACTON MA
2016-06-01 978-212-7XXX 7000–7999Assigned IP HORIZON LLC 515J HUDSON MA
2016-06-01 978-227-9XXX 9000–9999Assigned IP HORIZON LLC 515J LEOMINSTER MA
2016-06-01 978-233-5XXX 5000–5999Assigned IP HORIZON LLC 515J HAMILTON MA
2016-06-01 978-321-8XXX 8000–8999Assigned IP HORIZON LLC 515J WINCHENDON MA
2016-06-01 978-350-8XXX 8000–8999Assigned IP HORIZON LLC 515J TEMPLETON MA
2016-06-01 978-381-6XXX 6000–6999Assigned IP HORIZON LLC 515J GLOUCESTER MA
2016-06-01 978-451-8XXX 8000–8999Assigned IP HORIZON LLC 515J CONCORD MA
2016-06-01 978-493-8XXX 8000–8999Assigned IP HORIZON LLC 515J MAYNARD MA
2016-06-01 978-510-9XXX 9000–9999Assigned IP HORIZON LLC 515J W NEWBURY MA
2016-06-01 978-515-1XXX 1000–1999Assigned IP HORIZON LLC 515J GLOUCESTER MA
2016-06-01 978-517-9XXX 9000–9999Assigned IP HORIZON LLC 515J AMESBURY MA
2016-06-01 978-520-8XXX 8000–8999Assigned IP HORIZON LLC 515J WILMINGTON MA
2016-06-01 978-523-8XXX 8000–8999Assigned IP HORIZON LLC 515J TOWNSEND MA
2016-06-01 978-581-4XXX 4000–4999Assigned IP HORIZON LLC 515J ORANGE MA
2016-06-01 978-582-2XXX 2000–2999Assigned IP HORIZON LLC 515J LUNENBURG MA
2016-06-01 978-584-1XXX 1000–1999Assigned IP HORIZON LLC 515J BILLERICA MA
2016-06-01 978-607-8XXX 8000–8999Assigned IP HORIZON LLC 515J SALEM MA
2016-06-01 978-607-9XXX 9000–9999Assigned IP HORIZON LLC 515J SALEM MA
2016-06-01 978-610-8XXX 8000–8999Assigned IP HORIZON LLC 515J CONCORD MA
2016-06-01 978-634-8XXX 8000–8999Assigned IP HORIZON LLC 515J BOLTON MA
2016-06-01 978-647-9XXX 9000–9999Assigned IP HORIZON LLC 515J TOPSFIELD MA
2016-06-01 978-650-8XXX 8000–8999Assigned IP HORIZON LLC 515J PEPPERELL MA
2016-06-01 978-665-1XXX 1000–1999Assigned IP HORIZON LLC 515J FITCHBURG MA
2016-06-01 978-672-1XXX 1000–1999Assigned IP HORIZON LLC 515J PRINCETON MA
2016-06-01 978-706-9XXX 9000–9999Assigned IP HORIZON LLC 515J CLINTON MA
2016-06-01 978-719-2XXX 2000–2999Assigned IP HORIZON LLC 515J ANDOVER 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.