NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

12 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 319
ONVOY, LLC - IA 6
T-MOBILE USA, INC. 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 2
BANDWIDTH.COM CLEC, LLC - IA 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
2020-05-28 319-458-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F WASHINGTON IA
2020-05-28 319-474-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F BRANDON IA
2020-05-28 319-629-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F LONE TREE IA
2020-05-28 319-698-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F W CHESTER IA
2020-05-28 319-723-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F NICHOLS IA
2020-05-28 319-938-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F ROWLEY IA
2020-05-14 319-867-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IOWA CITY IA
2020-05-06 319-419-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WAVERLY IA
2020-05-05 319-224-6XXX 6000–6999Assigned TELNYX LLC 073H TROY MILLS IA
2020-05-04 319-408-0XXX 0000–0999Assigned TELNYX LLC 073H LISBON IA
2020-05-04 319-669-4XXX 4000–4999Assigned TELNYX LLC 073H FT MADISON IA
2020-05-04 319-732-0XXX 0000–0999Assigned TELNYX LLC 073H KEOKUK IA
2020-05-04 319-987-6XXX 6000–6999Assigned TELNYX LLC 073H JANESVILLE IA
2020-05-01 319-220-1XXX 1000–1999Assigned TELNYX LLC 073H CENTRAL CY IA
2020-05-01 319-237-9XXX 9000–9999Assigned TELNYX LLC 073H BURLINGTON IA
2020-04-16 319-220-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F CENTRAL CY IA
2020-04-16 319-220-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CENTRAL CY IA
2020-04-16 319-348-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2020-04-16 319-348-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2020-04-16 319-419-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F WAVERLY IA
2020-04-16 319-419-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WAVERLY IA
2020-04-16 319-500-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F VINTON IA
2020-04-16 319-500-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F VINTON IA
2020-04-16 319-601-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F BURLINGTON IA
2020-04-16 319-732-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F KEOKUK IA
2020-04-03 319-600-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 IOWA CITY IA
2020-04-01 319-344-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COLUMBSJCT IA
2020-03-26 319-600-1XXX 1000–1999Assigned AIRUS, INC - IA 423H IOWA CITY IA
2020-03-25 319-582-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2020-03-25 319-582-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2020-03-06 319-853-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 NO LIBERTY IA
2020-02-19 319-642-6XXX 6000–6999Assigned AUREON COMMUNICATIONS, LLC 444G MARENGO IA
2020-02-13 319-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H MOUNTUNION IA
2020-02-10 319-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H HILLS IA
2020-02-07 319-458-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WASHINGTON IA
2020-01-16 319-880-0XXX 0000–0999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-1XXX 1000–1999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-2XXX 2000–2999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-3XXX 3000–3999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-4XXX 4000–4999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-5XXX 5000–5999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-6XXX 6000–6999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-7XXX 7000–7999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-8XXX 8000–8999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-16 319-880-9XXX 9000–9999Assigned EDGETEL, LLC 179J MORNINGSUN IA
2020-01-08 319-727-5XXX 5000–5999Assigned AUREON COMMUNICATIONS, LLC 444G COGGON IA
2020-01-03 319-645-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 TIFFIN IA
2019-12-30 319-264-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2019-12-30 319-271-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F INDEPNDNCE IA
2019-12-30 319-419-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F WAVERLY IA

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.