NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 717
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2
TELEPORT COMMUNICATIONS AMERICA, LLC - PA 1
ONVOY, LLC - PA 1
HD CARRIER 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
2018-05-15 717-966-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NEWVILLE PA
2018-05-14 717-276-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ANNVILLE PA
2018-05-14 717-349-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DRY RUN PA
2018-05-14 717-366-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ELIZABTHTN PA
2018-05-14 717-366-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ELIZABTHTN PA
2018-05-14 717-402-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVILLE PA
2018-05-14 717-402-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVILLE PA
2018-05-14 717-402-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVILLE PA
2018-05-14 717-403-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALLENSVL PA
2018-05-14 717-403-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALLENSVL PA
2018-05-14 717-403-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALLENSVL PA
2018-05-14 717-536-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLAIN PA
2018-05-14 717-927-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BROGUE PA
2018-05-10 717-908-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2018-05-10 717-908-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2018-05-10 717-908-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2018-05-08 717-407-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 GAP PA
2018-05-08 717-601-7XXX 7000–7999Assigned METROPCS, INC. 5562 CARLISLE PA
2018-05-04 717-323-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MTHOLLYSPG PA
2018-05-04 717-345-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F LITTLESTN PA
2018-05-04 717-373-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F BROGUE PA
2018-05-04 717-402-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F BELLEVILLE PA
2018-05-04 717-403-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F ALLENSVL PA
2018-05-04 717-438-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F ICKESBURG PA
2018-05-04 717-931-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F DOVER PA
2018-05-04 717-978-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MANCHESTER PA
2018-05-02 717-452-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MERCERSBG PA
2018-04-26 717-251-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHAMBERSBG PA
2018-04-25 717-568-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LITITZ PA
2018-04-20 717-325-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MCONELLSBG PA
2018-04-20 717-401-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F FAYETTEVL PA
2018-04-18 717-436-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MIFFLINTN PA
2018-04-18 717-804-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F RED LION PA
2018-04-11 717-740-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LANCASTER PA
2018-03-29 717-708-5XXX 5000–5999Assigned METROPCS, INC. 5562 LEBANON PA
2018-03-29 717-708-7XXX 7000–7999Assigned METROPCS, INC. 5562 LEBANON PA
2018-03-29 717-788-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WAYNESBORO PA
2018-03-26 717-550-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 MECHANCSBG PA
2018-03-22 717-680-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 NEW OXFORD PA
2018-03-15 717-862-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E AIRVILLE PA
2018-03-14 717-708-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LEBANON PA
2018-03-09 717-287-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F ELIZABTHTN PA
2018-03-05 717-677-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BIGLERVL PA
2018-03-05 717-804-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RED LION PA
2018-03-05 717-990-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANDISVL PA
2018-02-28 717-797-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J HANOVER PA
2018-02-21 717-297-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 MT GRETNA PA
2018-02-13 717-638-7XXX 7000–7999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E DILLSBURG PA
2018-02-13 717-842-5XXX 5000–5999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E MILLERSVL PA
2018-02-13 717-890-2XXX 2000–2999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E MIDDLETOWN 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.