NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 513
BANDWIDTH.COM CLEC, LLC - OH 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2015-11-10 513-973-1XXX 1000–1999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F HAMILTON OH
2015-11-03 513-918-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2015-11-03 513-918-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2015-11-03 513-973-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2015-11-03 513-973-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2015-10-20 513-973-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K HAMILTON OH
2015-10-20 513-997-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K MIDDLETOWN OH
2015-10-07 513-449-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K CLERMONT OH
2015-10-07 513-832-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 CINCINNATI OH
2015-09-30 513-781-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2015-09-17 513-997-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2015-09-16 513-644-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K BETHANY OH
2015-09-16 513-987-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K LTL MIAMI OH
2015-09-15 513-816-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2015-09-15 513-816-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2015-09-10 513-987-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2015-09-08 513-954-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 CINCINNATI OH
2015-09-01 513-914-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2015-09-01 513-918-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2015-09-01 513-918-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2015-09-01 513-918-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2015-09-01 513-918-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2015-08-21 513-940-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2015-08-13 513-987-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C LTL MIAMI OH
2015-08-03 513-918-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-08-03 513-918-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-08-03 513-918-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-08-03 513-918-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-08-03 513-987-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2015-08-03 513-987-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2015-07-31 513-997-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2015-07-31 513-997-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2015-07-30 513-914-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2015-07-30 513-914-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2015-07-29 513-447-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C SHANDON OH
2015-07-29 513-457-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C BETHEL OH
2015-07-29 513-715-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C HARRISON OH
2015-07-29 513-726-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C SEVEN MILE OH
2015-07-29 513-757-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C REILY OH
2015-07-29 513-901-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C WILLIAMSBG OH
2015-07-29 513-940-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C NEWTONSVL OH
2015-07-27 513-781-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2015-07-27 513-833-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2015-07-24 513-914-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-07-24 513-914-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-07-24 513-914-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-07-17 513-954-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-07-17 513-954-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2015-07-16 513-996-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2015-07-16 513-996-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH

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.