NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

21 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 223
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 4
ONVOY, LLC - PA 3
NEW CINGULAR WIRELESS PCS, LLC - DC 3
BOOST SUBSCRIBERCO L.L.C. 2
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
2023-06-06 223-323-9XXX 9000–9999Assigned ONVOY, LLC - PA 547E TERRE HILL PA
2023-06-06 223-338-2XXX 2000–2999Assigned ONVOY, LLC - PA 547E LEOLA PA
2023-06-06 223-377-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E WARFORDSBG PA
2023-06-06 223-403-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E LANDISVL PA
2023-06-06 223-426-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E WAYNESBORO PA
2023-06-06 223-432-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E FAYETTEVL PA
2023-06-06 223-667-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E COLUMBIA PA
2023-06-06 223-867-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E HANOVER PA
2023-06-06 223-895-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E HARISBGZN1 PA
2023-06-06 223-895-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E HARISBGZN1 PA
2023-06-06 223-895-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E HARISBGZN1 PA
2023-06-02 223-355-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J DRY RUN PA
2023-06-02 223-678-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SCHAEFESTN PA
2023-05-26 223-733-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F CHAMBERSBG PA
2023-05-19 223-299-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
2023-05-09 223-219-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 RAWLINSVL PA
2023-05-08 223-234-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2023-05-08 223-234-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2023-05-01 223-306-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E YORK PA
2023-04-25 223-292-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 JONESTOWN PA
2023-04-11 223-386-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F CHAMBERSBG PA
2023-03-31 223-310-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MYERSTOWN PA
2023-03-31 223-312-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 MCVEYTOWN PA
2023-03-27 223-297-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PALMYRA PA
2023-03-27 223-297-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PALMYRA PA
2023-03-27 223-299-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E YORK PA
2023-03-27 223-307-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E LANCASTER PA
2023-03-27 223-355-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E DRY RUN PA
2023-03-27 223-466-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E MT GRETNA PA
2023-03-27 223-624-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E NEWBURG PA
2023-03-16 223-309-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPRING GRV PA
2023-03-16 223-309-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPRING GRV PA
2023-03-14 223-210-9XXX 9000–9999Assigned ONVOY, LLC - PA 547E DENVER PA
2023-03-13 223-797-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2023-03-13 223-797-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2023-03-13 223-797-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2023-03-06 223-270-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E LEBANON PA
2023-03-03 223-278-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 COLUMBIA PA
2023-03-03 223-289-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 COLUMBIA PA
2023-03-03 223-723-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 LOGANVILLE PA
2023-03-02 223-226-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E MANHEIM PA
2023-03-02 223-275-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 WRIGHTSVL PA
2023-03-02 223-299-6XXX 6000–6999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E YORK PA
2023-03-02 223-488-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E HARISBGZN1 PA
2023-03-02 223-488-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E HARISBGZN1 PA
2023-03-01 223-344-0XXX 0000–0999Assigned TELNYX LLC 073H DAUPHIN PA
2023-02-22 223-305-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E DELTA PA
2023-02-22 223-323-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E TERRE HILL PA
2023-02-22 223-946-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MYERSTOWN PA
2023-02-21 223-307-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER 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.