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
2007-01-04 319-213-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2006-12-15 319-493-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WATERLOO IA
2006-11-06 319-596-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WAVERLY IA
2006-11-03 319-541-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 IOWA CITY IA
2006-11-03 319-651-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2006-10-12 319-471-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 IOWA CITY IA
2006-10-12 319-610-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2006-09-08 319-654-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2006-09-08 319-654-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2006-08-15 319-296-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2006-08-15 319-400-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2006-08-01 319-471-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2006-07-21 319-610-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2006-07-20 319-210-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2006-07-07 319-671-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BURLINGTON IA
2006-06-23 319-210-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2006-06-23 319-210-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2006-06-14 319-263-0XXX 0000–0999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-1XXX 1000–1999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-2XXX 2000–2999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-3XXX 3000–3999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-4XXX 4000–4999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-5XXX 5000–5999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-6XXX 6000–6999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-7XXX 7000–7999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-8XXX 8000–8999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-14 319-263-9XXX 9000–9999Assigned QWEST CORPORATION 9631 CEDAR RPDS IA
2006-06-13 319-274-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K WATERLOO IA
2006-05-10 319-296-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WATERLOO IA
2006-04-04 319-332-0XXX 0000–0999Assigned INDEPENDENCE TELECOMMUNICATIONS UTILITY - IA 649D INDEPNDNCE IA
2006-03-21 319-208-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BURLINGTON IA
2006-03-16 319-575-5XXX 5000–5999Assigned QWEST CORPORATION 9631 CEDARFALLS IA
2006-03-06 319-464-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2006-02-23 319-313-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F KEOKUK IA
2006-02-23 319-316-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F FT MADISON IA
2006-01-12 319-210-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2006-01-10 319-830-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2006-01-10 319-931-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 MTPLEASANT IA
2006-01-06 319-493-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2005-10-12 319-210-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2005-09-29 319-400-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2005-09-19 319-210-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2005-07-27 319-784-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 CEDAR RPDS IA
2005-07-11 319-610-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2005-04-28 319-327-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 INDEPNDNCE IA
2005-04-28 319-327-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 INDEPNDNCE IA
2005-04-18 319-215-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 WATERLOO IA
2005-04-18 319-215-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 WATERLOO IA
2005-04-18 319-215-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 WATERLOO IA
2005-04-18 319-215-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 WATERLOO 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.