NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

13 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 724
ONVOY, LLC - PA 10
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2
NEW CINGULAR WIRELESS PCS, LLC - IL 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
2019-02-04 724-999-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 JAMESTOWN PA
2019-01-17 724-508-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDLAND PA
2018-12-26 724-597-1XXX 1000–1999Assigned CITYNET PENNSYLVANIA, LLC - PA 657B CANONSBURG PA
2018-12-13 724-596-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APOLLO PA
2018-12-13 724-930-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLEVRNON PA
2018-12-12 724-636-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SLIPPERYRK PA
2018-11-29 724-395-1XXX 1000–1999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E CHARLEROI PA
2018-11-07 724-556-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SLIPPERYRK PA
2018-10-29 724-401-8XXX 8000–8999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E NEWFLORNCE PA
2018-10-29 724-936-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEW CASTLE PA
2018-10-17 724-351-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SPRINGDALE PA
2018-10-17 724-418-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-568-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-10-17 724-574-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-10-17 724-574-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-10-17 724-574-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-10-17 724-685-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-685-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-685-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-685-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-685-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-727-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-10-17 724-727-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-10-17 724-767-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-767-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-767-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-767-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-767-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-767-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-767-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHARON PA
2018-10-17 724-826-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SPRINGDALE PA
2018-10-16 724-286-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARCHAND PA
2018-10-16 724-497-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PERRYOPOLS PA
2018-10-16 724-521-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PARIS PA
2018-10-16 724-521-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PARIS PA
2018-10-16 724-521-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PARIS PA
2018-10-16 724-606-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NOWASHIGTN PA
2018-10-16 724-606-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NOWASHIGTN PA
2018-10-16 724-606-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NOWASHIGTN PA
2018-10-16 724-606-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NOWASHIGTN PA
2018-10-16 724-645-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PERRYOPOLS PA
2018-10-16 724-660-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MIDLAND PA
2018-10-16 724-660-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MIDLAND PA
2018-10-16 724-660-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MIDLAND PA
2018-10-16 724-660-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MIDLAND PA
2018-10-16 724-729-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PARIS PA
2018-10-16 724-729-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PARIS PA
2018-10-16 724-736-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PERRYOPOLS PA
2018-10-16 724-736-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PERRYOPOLS PA
2018-10-16 724-894-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NOWASHIGTN PA

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.