NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 501
ONVOY, LLC - AR 15
BANDWIDTH.COM CLEC, LLC - AR 5
CSC WIRELESS, LLC 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 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
2020-09-17 501-361-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F BRYANTCGVL AR
2020-09-17 501-361-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F BRYANTCGVL AR
2020-09-17 501-382-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2020-09-17 501-382-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2020-09-17 501-386-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F CENTER RDG AR
2020-09-17 501-434-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F MCRAE AR
2020-09-17 501-621-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2020-09-17 501-621-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2020-09-16 501-298-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F SPRINGLAKE AR
2020-09-16 501-298-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F SPRINGLAKE AR
2020-09-16 501-299-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F KENSETT AR
2020-09-16 501-322-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F KENSETT AR
2020-09-16 501-387-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F BEEBE AR
2020-09-16 501-387-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F BEEBE AR
2020-09-16 501-389-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F SEARCY AR
2020-09-16 501-389-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F SEARCY AR
2020-09-16 501-394-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F CABOT AR
2020-09-16 501-394-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F CABOT AR
2020-09-16 501-397-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F REDFIELD AR
2020-09-16 501-397-9XXX 9000–9999Assigned ONVOY, LLC - AR 348F REDFIELD AR
2020-09-16 501-417-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F JUDSONIA AR
2020-09-16 501-417-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F JUDSONIA AR
2020-09-16 501-426-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F CONWAY AR
2020-09-16 501-426-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F CONWAY AR
2020-09-16 501-770-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F WRIGHTSVL AR
2020-09-16 501-770-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F WRIGHTSVL AR
2020-09-15 501-300-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F BRADFORD AR
2020-09-15 501-300-9XXX 9000–9999Assigned ONVOY, LLC - AR 348F BRADFORD AR
2020-09-03 501-430-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F BENTON AR
2020-09-03 501-430-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F BENTON AR
2020-09-03 501-439-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ENGLAND AR
2020-08-31 501-641-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2020-08-24 501-382-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C LONSDALE AR
2020-08-19 501-644-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-644-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-644-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-644-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-644-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-644-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-646-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-646-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-646-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-19 501-646-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-08-17 501-292-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L BALD KNOB AR
2020-07-28 501-431-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HOTSPRINGS AR
2020-07-27 501-665-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C LITTLEROCK AR
2020-07-16 501-437-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F LONOKE AR
2020-07-16 501-577-7XXX 7000–7999Assigned FRACTEL, LLC 965H LONOKE AR
2020-07-16 501-599-9XXX 9000–9999Assigned FRACTEL, LLC 965H SYVNHLSHWD AR
2020-07-16 501-755-5XXX 5000–5999Assigned FRACTEL, LLC 965H QUITMAN AR

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.