NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 843
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 449
ONVOY, LLC - SC 446
NEW CINGULAR WIRELESS PCS, LLC - GA 361
BANDWIDTH.COM CLEC, LLC - SC 309
SUNCOM DBA T-MOBILE USA 268
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
2019-05-06 843-981-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 MTPLEASANT SC
2019-05-03 843-983-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ANDREWS SC
2019-05-01 843-738-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CLIO SC
2019-04-26 843-350-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BLENHEIM SC
2019-04-26 843-948-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F LATTA SC
2019-04-18 843-973-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C CHARLESTON SC
2019-04-05 843-258-1XXX 1000–1999Assigned ONVOY, LLC - SC 548E RIDGELAND SC
2019-04-05 843-258-8XXX 8000–8999Assigned ONVOY, LLC - SC 548E RIDGELAND SC
2019-04-05 843-772-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C NO CONWAY SC
2019-03-27 843-548-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F LOWCOUNTRY SC
2019-03-25 843-962-5XXX 5000–5999Assigned ONVOY, LLC - SC 548E BEAUFORT SC
2019-03-25 843-962-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E BEAUFORT SC
2019-03-25 843-962-7XXX 7000–7999Assigned ONVOY, LLC - SC 548E BEAUFORT SC
2019-03-22 843-897-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BENNETTSVL SC
2019-03-19 843-809-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2019-03-19 843-949-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BLUFFTON SC
2019-03-13 843-288-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C HARDEEVL SC
2019-03-06 843-653-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 EASTCONWAY SC
2019-03-05 843-981-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MTPLEASANT SC
2019-03-05 843-981-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MTPLEASANT SC
2019-02-25 843-823-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2019-02-25 843-823-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2019-02-25 843-823-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2019-02-11 843-897-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BENNETTSVL SC
2019-02-07 843-385-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MYRTLE BCH SC
2019-02-06 843-481-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F KINGSTREE SC
2019-02-06 843-481-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F KINGSTREE SC
2019-02-04 843-942-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F FLORENCE SC
2019-01-29 843-417-8XXX 8000–8999Assigned ONVOY, LLC - SC 548E NMYRTLEBCH SC
2019-01-29 843-427-1XXX 1000–1999Assigned ONVOY, LLC - SC 548E NMYRTLEBCH SC
2019-01-29 843-427-8XXX 8000–8999Assigned ONVOY, LLC - SC 548E NMYRTLEBCH SC
2019-01-29 843-491-0XXX 0000–0999Assigned ONVOY, LLC - SC 548E NMYRTLEBCH SC
2019-01-25 843-295-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 HILTONHEAD SC
2019-01-15 843-981-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MTPLEASANT SC
2019-01-14 843-964-5XXX 5000–5999Assigned METROPCS, INC. 5562 MONCKS COR SC
2019-01-08 843-356-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 KINGSTREE SC
2018-12-26 843-765-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F MARION SC
2018-12-21 843-402-8XXX 8000–8999Assigned TELNYX LLC 073H CHARLESTON SC
2018-12-13 843-481-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F KINGSTREE SC
2018-12-12 843-949-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLUFFTON SC
2018-12-06 843-336-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C HUGER SC
2018-12-06 843-981-5XXX 5000–5999Assigned SOUTH CAROLINA NET, INC. - SC 1784 MTPLEASANT SC
2018-11-29 843-892-1XXX 1000–1999Assigned PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H ROWLAND SC
2018-11-29 843-981-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D MTPLEASANT SC
2018-11-29 843-981-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D MTPLEASANT SC
2018-11-28 843-829-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F NEWTONVL SC
2018-11-26 843-936-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D MTPLEASANT SC
2018-11-20 843-885-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C ISLE PALMS SC
2018-11-19 843-648-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C FOLLYBEACH SC
2018-11-15 843-823-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC

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.