NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

11 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
BANDWIDTH.COM CLEC, LLC - IA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 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
2014-12-29 319-975-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 ANAMOSA IA
2014-12-24 319-343-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CENTER PT IA
2014-12-24 319-382-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2014-12-24 319-382-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2014-12-24 319-382-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2014-12-24 319-382-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2014-12-12 319-229-1XXX 1000–1999Assigned AUREON COMMUNICATIONS, LLC 444G WATERLOO IA
2014-12-12 319-553-8XXX 8000–8999Assigned AUREON COMMUNICATIONS, LLC 444G CEDARFALLS IA
2014-12-12 319-575-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS IA
2014-11-11 319-549-1XXX 1000–1999Assigned FARM & MERCH MUTUAL TELCO DBA KALONA COOP TEL 198H OLDS IA
2014-11-04 319-237-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BURLINGTON IA
2014-11-04 319-250-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E FT MADISON IA
2014-11-04 319-553-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDARFALLS IA
2014-10-28 319-519-1XXX 1000–1999Assigned AIRUS, INC - IA 423H IOWA CITY IA
2014-10-24 319-859-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDARFALLS IA
2014-10-13 319-229-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2014-10-13 319-229-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2014-10-13 319-229-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2014-10-13 319-777-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2014-10-13 319-777-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2014-09-25 319-382-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2014-08-27 319-472-1XXX 1000–1999Assigned SHELLSBURG CABLEVISION, INC. - IA 527G VINTON IA
2014-08-26 319-383-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 IOWA CITY IA
2014-08-15 319-538-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2014-08-08 319-229-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2014-08-05 319-383-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2014-08-01 319-204-0XXX 0000–0999Assigned FARM & MERCH MUTUAL TELCO DBA KALONA COOP TEL 198H MTPLEASANT IA
2014-08-01 319-359-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E IOWA CITY IA
2014-07-30 319-409-5XXX 5000–5999Assigned MCC TELEPHONY LLC 593K CEDAR RPDS IA
2014-07-01 319-774-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2014-06-24 319-640-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2014-06-24 319-640-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2014-06-19 319-505-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2014-06-18 319-250-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F FT MADISON IA
2014-06-06 319-576-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 BURLINGTON IA
2014-05-30 319-853-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 NO LIBERTY IA
2014-05-23 319-209-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BURLINGTON IA
2014-05-15 319-774-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2014-05-12 319-238-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 OELWEIN IA
2014-05-12 319-243-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS IA
2014-04-22 319-464-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WATERLOO IA
2014-04-21 319-493-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WATERLOO IA
2014-04-21 319-505-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WATERLOO IA
2014-04-09 319-359-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 IOWA CITY IA
2014-04-09 319-440-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2014-04-09 319-440-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2014-04-01 319-536-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CEDAR RPDS IA
2014-03-24 319-499-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IOWA CITY IA
2014-03-18 319-250-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E FT MADISON IA
2014-03-18 319-505-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 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.