NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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, all time — NPA 910
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 123
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
2021-04-06 910-806-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2019-11-08 910-656-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2018-11-30 910-605-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2018-05-11 910-507-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 HOLLYRIDGE NC
2017-07-28 910-390-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 MAXTON NC
2016-03-17 910-613-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 BLADENBORO NC
2015-10-28 910-748-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2015-10-14 910-683-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 RAEFORD NC
2014-11-25 910-598-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-598-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-11-25 910-771-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2014-02-28 910-430-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 RICHLANDS NC
2013-06-28 910-606-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 TROY NC
2013-03-27 910-335-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 KENANSVL NC
2012-01-04 910-473-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WILMINGTON NC
2011-10-17 910-853-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 FAYETTEVL NC
2011-08-18 910-838-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 ROSEBORO NC
2011-08-15 910-236-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 NEWTON GRV NC
2011-08-15 910-356-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 LKWACCAMAW NC
2011-02-11 910-506-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 LAURINBURG NC
2010-10-20 910-682-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 CLINTON NC
2009-11-24 910-473-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WILMINGTON NC
2009-10-29 910-830-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 ACME NC
2009-09-29 910-226-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WARSAW NC

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.