NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

8 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, last 30 days — NPA 570
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7
ONVOY, LLC - PA 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
2018-11-01 570-984-5XXX 5000–5999Assigned TELNYX LLC 073H MINERSVL PA
2018-10-31 570-382-9XXX 9000–9999Assigned TELNYX LLC 073H OLYPHANT PA
2018-10-31 570-936-8XXX 8000–8999Assigned TELNYX LLC 073H CARBONDALE PA
2018-10-29 570-237-3XXX 3000–3999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E PITTSTON PA
2018-10-29 570-307-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E OLYPHANT PA
2018-10-29 570-800-6XXX 6000–6999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E SCRANTON PA
2018-10-22 570-559-6XXX 6000–6999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E SHOHOLA PA
2018-10-17 570-201-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-10-17 570-201-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-10-17 570-201-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-10-17 570-201-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-10-17 570-303-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 THOMPSON PA
2018-10-17 570-303-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 THOMPSON PA
2018-10-17 570-303-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 THOMPSON PA
2018-10-17 570-303-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 THOMPSON PA
2018-10-17 570-548-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ST JOSEPH PA
2018-10-17 570-548-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ST JOSEPH PA
2018-10-17 570-548-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ST JOSEPH PA
2018-10-17 570-548-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ST JOSEPH PA
2018-10-17 570-564-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-564-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-564-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-564-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-564-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-564-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-625-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-625-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA PA
2018-10-17 570-653-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VALLEYVIEW PA
2018-10-17 570-653-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VALLEYVIEW PA
2018-10-17 570-653-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VALLEYVIEW PA
2018-10-17 570-705-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RINGTOWN PA
2018-10-17 570-705-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RINGTOWN PA
2018-10-17 570-705-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RINGTOWN PA
2018-10-17 570-838-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WATSONTOWN PA
2018-10-17 570-838-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WATSONTOWN PA
2018-10-17 570-838-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WATSONTOWN PA
2018-10-17 570-838-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WATSONTOWN PA
2018-10-17 570-838-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WATSONTOWN PA
2018-10-17 570-838-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WATSONTOWN PA
2018-10-17 570-870-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TROY PA
2018-10-17 570-870-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TROY PA
2018-10-17 570-870-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TROY PA
2018-10-17 570-870-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TROY PA
2018-10-17 570-934-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-10-16 570-258-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NANTICOKE PA
2018-10-16 570-264-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MONTGOMERY PA
2018-10-16 570-264-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MONTGOMERY PA
2018-10-16 570-264-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MONTGOMERY PA
2018-10-16 570-264-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MONTGOMERY PA
2018-10-16 570-414-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MOOSIC PA

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.