NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

16 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 563
ONVOY, LLC - IA 8
IMON COMMUNICATIONS, LLC - IA 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 3
NEW CINGULAR WIRELESS PCS, LLC - IL 1
LEVEL 3 COMMUNICATIONS, LLC - 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
2020-05-05 563-284-1XXX 1000–1999Assigned TELNYX LLC 073H WALCOTT IA
2020-05-05 563-934-0XXX 0000–0999Assigned TELNYX LLC 073H MILES IA
2020-05-04 563-227-0XXX 0000–0999Assigned TELNYX LLC 073H DUBUQUE IA
2020-05-04 563-521-0XXX 0000–0999Assigned TELNYX LLC 073H MAQUOKETA IA
2020-05-01 563-206-5XXX 5000–5999Assigned TELNYX LLC 073H CLINTON IA
2020-05-01 563-356-0XXX 0000–0999Assigned TELNYX LLC 073H CHESTER IA
2020-04-27 563-287-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F DECORAH IA
2020-04-27 563-287-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F DECORAH IA
2020-04-16 563-278-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CLINTON IA
2020-04-13 563-287-2XXX 2000–2999Assigned AIRUS, INC - IA 423H DECORAH IA
2020-04-01 563-551-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DAVENPORT IA
2020-02-17 563-777-4XXX 4000–4999Assigned FRACTEL, LLC 965H SABULA IA
2020-02-17 563-777-5XXX 5000–5999Assigned FRACTEL, LLC 965H SABULA IA
2020-02-17 563-777-7XXX 7000–7999Assigned FRACTEL, LLC 965H SABULA IA
2020-01-23 563-500-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F DUBUQUE IA
2020-01-23 563-500-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F DUBUQUE IA
2020-01-15 563-500-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DUBUQUE IA
2020-01-15 563-500-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DUBUQUE IA
2020-01-15 563-500-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DUBUQUE IA
2020-01-15 563-500-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DUBUQUE IA
2019-12-30 563-278-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F CLINTON IA
2019-12-30 563-600-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F LANSING IA
2019-12-27 563-200-8XXX 8000–8999Assigned METROPCS, INC. 5562 DAVENPORT IA
2019-12-23 563-500-0XXX 0000–0999Assigned FRACTEL, LLC 965H DUBUQUE IA
2019-12-23 563-500-5XXX 5000–5999Assigned FRACTEL, LLC 965H DUBUQUE IA
2019-12-23 563-766-3XXX 3000–3999Assigned FRACTEL, LLC 965H COLESBURG IA
2019-12-23 563-766-6XXX 6000–6999Assigned FRACTEL, LLC 965H COLESBURG IA
2019-12-23 563-900-0XXX 0000–0999Assigned FRACTEL, LLC 965H DAVENPORT IA
2019-12-23 563-900-9XXX 9000–9999Assigned FRACTEL, LLC 965H DAVENPORT IA
2019-12-19 563-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H CHESTER IA
2019-12-19 563-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H CHESTER IA
2019-12-18 563-281-1XXX 1000–1999Assigned AUREON COMMUNICATIONS, LLC 444G MUSCATINE IA
2019-12-17 563-400-0XXX 0000–0999Assigned FRACTEL, LLC 965H CRESCO IA
2019-12-17 563-400-4XXX 4000–4999Assigned FRACTEL, LLC 965H CRESCO IA
2019-12-17 563-600-0XXX 0000–0999Assigned FRACTEL, LLC 965H LANSING IA
2019-12-17 563-600-6XXX 6000–6999Assigned FRACTEL, LLC 965H LANSING IA
2019-12-09 563-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CALMAR IA
2019-12-06 563-298-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GUTTENBERG IA
2019-12-03 563-204-9XXX 9000–9999Assigned TELNYX LLC 073H LANSING IA
2019-12-03 563-276-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKON IA
2019-12-03 563-287-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECORAH IA
2019-12-03 563-315-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STRAWBRYPT IA
2019-12-03 563-605-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 POSTVILLE IA
2019-11-26 563-283-9XXX 9000–9999Assigned HD CARRIER LLC 321J MUSCATINE IA
2019-11-26 563-287-1XXX 1000–1999Assigned AIRUS, INC - IA 423H DECORAH IA
2019-11-21 563-286-1XXX 1000–1999Assigned TELNYX LLC 073H DAVENPORT IA
2019-11-20 563-551-1XXX 1000–1999Assigned WIDE VOICE, LLC - IA 722G DAVENPORT IA
2019-11-15 563-224-5XXX 5000–5999Assigned HAWKEYE INTERCONNECT COMPANY - IA 429J MAYNARD IA
2019-11-15 563-339-5XXX 5000–5999Assigned HAWKEYE INTERCONNECT COMPANY - IA 429J SUMNER IA
2019-10-30 563-279-1XXX 1000–1999Assigned AIRUS, INC - IA 423H DAVENPORT 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.