NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 484
ONVOY, LLC - PA 7
NEW CINGULAR WIRELESS PCS, LLC - DC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 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
2019-03-08 484-277-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEESPORT PA
2019-03-08 484-277-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEESPORT PA
2019-03-08 484-826-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-08 484-826-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-08 484-826-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-08 484-826-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-07 484-228-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GLENMOORE PA
2019-03-07 484-228-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GLENMOORE PA
2019-03-07 484-237-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-07 484-372-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KEMBLESVL PA
2019-03-07 484-372-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KEMBLESVL PA
2019-03-07 484-376-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KEMBLESVL PA
2019-03-07 484-376-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KEMBLESVL PA
2019-03-07 484-662-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAMBURG PA
2019-03-07 484-668-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAMBURG PA
2019-03-07 484-692-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-06 484-360-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BIRDSBORO PA
2019-03-06 484-521-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN17 PA
2019-03-06 484-783-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOYERTOWN PA
2019-03-06 484-783-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOYERTOWN PA
2019-03-06 484-783-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOYERTOWN PA
2019-03-06 484-783-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOYERTOWN PA
2019-03-06 484-783-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOYERTOWN PA
2019-03-06 484-783-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOYERTOWN PA
2019-03-06 484-973-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLLEGEVL PA
2019-03-06 484-994-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CENTER PT PA
2019-03-06 484-994-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CENTER PT PA
2019-03-05 484-630-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F W CHESTER PA
2019-03-05 484-630-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F W CHESTER PA
2019-03-05 484-630-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F W CHESTER PA
2019-02-13 484-242-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BETHLEHEM PA
2019-02-13 484-262-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SLATINGTON PA
2019-02-13 484-768-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN11 PA
2019-02-04 484-468-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN12 PA
2019-02-04 484-829-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-01-08 484-662-0XXX 0000–0999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 HAMBURG PA
2018-12-31 484-521-4XXX 4000–4999Assigned METROPCS, INC. 5562 PHPHSBZN17 PA
2018-12-06 484-312-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F UPBLCKEDDY PA
2018-12-06 484-514-6XXX 6000–6999Assigned METROPCS, INC. 5562 HONEYBROOK PA
2018-12-03 484-284-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F BATH PA
2018-11-27 484-917-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F BERNVILLE PA
2018-11-20 484-783-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BOYERTOWN PA
2018-11-08 484-445-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN12 PA
2018-10-30 484-543-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E ROBESONIA PA
2018-10-22 484-940-3XXX 3000–3999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E POTTSTOWN PA
2018-10-22 484-965-3XXX 3000–3999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E PHPHSBZN30 PA
2018-10-18 484-878-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E READING PA
2018-10-18 484-878-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E READING PA
2018-10-18 484-878-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E READING PA
2018-10-17 484-263-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SLATINGTON 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.