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
2008-01-31 319-238-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2008-01-31 319-242-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F CEDARFALLS IA
2008-01-31 319-327-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F INDEPNDNCE IA
2008-01-31 319-346-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F PARKERSBG IA
2008-01-31 319-429-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2008-01-31 319-462-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F ANAMOSA IA
2008-01-31 319-483-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WAVERLY IA
2008-01-31 319-512-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2008-01-29 319-246-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F FT MADISON IA
2008-01-29 319-313-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F KEOKUK IA
2008-01-29 319-768-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F BURLINGTON IA
2008-01-16 319-491-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2007-12-18 319-538-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2007-12-14 319-671-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BURLINGTON IA
2007-12-04 319-238-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 OELWEIN IA
2007-12-04 319-327-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 INDEPNDNCE IA
2007-11-12 319-213-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2007-11-12 319-743-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2007-11-12 319-743-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2007-11-08 319-429-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2007-10-30 319-471-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2007-10-15 319-471-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 IOWA CITY IA
2007-10-08 319-237-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BURLINGTON IA
2007-09-28 319-429-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-09-25 319-447-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2007-08-03 319-429-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WATERLOO IA
2007-07-24 319-899-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2007-07-19 319-491-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2007-07-19 319-491-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2007-07-18 319-491-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2007-07-18 319-491-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2007-07-16 319-429-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-06-22 319-596-3XXX 3000–3999Assigned QWEST CORPORATION 9631 WAVERLY IA
2007-06-11 319-429-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 WATERLOO IA
2007-06-11 319-429-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 WATERLOO IA
2007-05-11 319-493-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-05-11 319-493-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-04-17 319-512-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2007-04-17 319-512-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2007-03-30 319-296-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2007-03-28 319-471-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 IOWA CITY IA
2007-03-28 319-471-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 IOWA CITY IA
2007-03-23 319-243-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CEDARFALLS IA
2007-03-23 319-493-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WATERLOO IA
2007-03-19 319-471-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 IOWA CITY IA
2007-03-01 319-651-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2007-02-08 319-471-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IOWA CITY IA
2007-01-24 319-493-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-01-19 319-464-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-01-04 319-213-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS 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.