NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 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 712
NEW CINGULAR WIRELESS PCS, LLC - IL 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
2007-12-04 712-303-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 CLARINDA IA
2007-12-04 712-631-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SHELDON IA
2007-11-06 712-231-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HOSPERS IA
2007-11-05 712-631-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 SHELDON IA
2007-10-25 712-202-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2007-10-25 712-202-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2007-10-24 712-242-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COUNCILBLF IA
2007-10-24 712-460-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 ROCKVALLEY IA
2007-10-22 712-346-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPENCER IA
2007-10-22 712-577-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SIOUX CITY IA
2007-10-16 712-305-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LE MARS IA
2007-10-12 712-335-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 POCAHONTAS IA
2007-10-12 712-922-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EMMETSBURG IA
2007-10-08 712-584-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SPENCER IA
2007-08-20 712-314-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 COUNCILBLF IA
2007-08-03 712-202-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2007-08-03 712-541-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 LE MARS IA
2007-07-27 712-423-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ONAWA IA
2007-07-27 712-584-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPENCER IA
2007-06-21 712-560-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SIOUX CITY IA
2007-06-21 712-560-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SIOUX CITY IA
2007-06-18 712-309-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COUNCILBLF IA
2007-06-18 712-560-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2007-05-16 712-749-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STORM LAKE IA
2007-05-09 712-314-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 COUNCILBLF IA
2007-04-23 712-560-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SIOUX CITY IA
2007-03-30 712-552-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 HAWARDEN IA
2007-03-23 712-326-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COUNCILBLF IA
2007-03-21 712-657-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAKE VIEW IA
2007-03-20 712-215-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 SHENANDOAH IA
2007-02-27 712-266-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2007-02-27 712-266-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2007-02-27 712-541-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 LE MARS IA
2007-01-04 712-203-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX CITY IA
2007-01-04 712-203-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX CITY IA
2006-12-29 712-266-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SIOUX CITY IA
2006-12-29 712-301-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2006-12-01 712-396-8XXX 8000–8999Assigned WALNUT TELEPHONE COMPANY, INC. - IA 774B COUNCILBLF IA
2006-12-01 712-485-8XXX 8000–8999Assigned WALNUT TELEPHONE COMPANY, INC. - IA 774B NEOLA IA
2006-12-01 712-545-8XXX 8000–8999Assigned WALNUT TELEPHONE COMPANY, INC. - IA 774B CRESCENT IA
2006-12-01 712-566-8XXX 8000–8999Assigned WALNUT TELEPHONE COMPANY, INC. - IA 774B UNDERWOOD IA
2006-11-17 712-338-7XXX 7000–7999Assigned PREMIER COMMUNICATIONS, INC. - IA 904D MILFORD IA
2006-11-13 712-652-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SCRANTON IA
2006-10-10 712-301-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2006-10-10 712-301-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2006-10-10 712-301-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2006-10-10 712-301-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2006-10-10 712-301-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
2006-09-12 712-295-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PETERSON IA
2006-09-12 712-346-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPENCER IA

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.