NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

18 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 878
ONVOY, LLC - PA 10
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 4
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 3
BANDWIDTH.COM CLEC, 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
2021-02-08 878-235-0XXX 0000–0999Assigned TELNYX LLC 073H ROCHESTER PA
2021-02-08 878-243-0XXX 0000–0999Assigned TELNYX LLC 073H WASHINGTON PA
2021-02-05 878-251-0XXX 0000–0999Assigned TELNYX LLC 073H BLACK LICK PA
2021-02-05 878-881-0XXX 0000–0999Assigned TELNYX LLC 073H BROWNSVL PA
2021-02-02 878-879-2XXX 2000–2999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E NEWKNSNGTN PA
2021-02-02 878-884-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E GREENSBURG PA
2021-02-01 878-232-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E ELLWOOD CY PA
2021-02-01 878-232-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E ELLWOOD CY PA
2021-02-01 878-232-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E ELLWOOD CY PA
2021-02-01 878-233-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F PRINCETON PA
2021-01-30 878-227-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E BEAVER FLS PA
2021-01-30 878-227-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E BEAVER FLS PA
2021-01-30 878-227-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E BEAVER FLS PA
2021-01-30 878-877-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E BUTLER PA
2021-01-30 878-877-2XXX 2000–2999Assigned ONVOY, LLC - PA 547E BUTLER PA
2021-01-30 878-877-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E BUTLER PA
2021-01-28 878-226-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E WASHINGTON PA
2021-01-28 878-226-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E WASHINGTON PA
2021-01-26 878-789-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E PETROLIA PA
2021-01-26 878-789-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E PETROLIA PA
2021-01-26 878-789-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E PETROLIA PA
2021-01-26 878-837-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 BENTLEYVL PA
2021-01-25 878-229-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E WASHINGTON PA
2021-01-25 878-229-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E WASHINGTON PA
2021-01-25 878-768-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E VOLANT PA
2021-01-25 878-768-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E VOLANT PA
2021-01-25 878-768-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E VOLANT PA
2021-01-25 878-881-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E BROWNSVL PA
2021-01-25 878-881-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E BROWNSVL PA
2021-01-25 878-881-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E BROWNSVL PA
2021-01-25 878-881-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E BROWNSVL PA
2020-12-22 878-884-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E GREENSBURG PA
2020-12-22 878-884-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E GREENSBURG PA
2020-11-23 878-439-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E ROCHESTER PA
2020-11-23 878-847-6XXX 6000–6999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E NEWKNSNGTN PA
2020-11-19 878-895-8XXX 8000–8999Assigned TWILIO INTERNATIONAL, INC. 506J UNIONTOWN PA
2020-11-18 878-220-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F EXPORT PA
2020-11-18 878-220-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F EXPORT PA
2020-11-13 878-217-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CRIDERSCOR PA
2020-10-30 878-231-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WEXFORD PA
2020-10-28 878-229-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WASHINGTON PA
2020-10-09 878-887-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E PARIS PA
2020-10-09 878-887-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E PARIS PA
2020-10-06 878-225-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E ELLWOOD CY PA
2020-10-06 878-225-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E ELLWOOD CY PA
2020-10-06 878-425-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E SAXONBURG PA
2020-10-06 878-425-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E SAXONBURG PA
2020-10-06 878-728-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E GIBSONIA PA
2020-10-06 878-728-2XXX 2000–2999Assigned ONVOY, LLC - PA 547E GIBSONIA PA
2020-10-02 878-278-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E DARLINGTON 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.