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
2014-07-29 843-289-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C MARION SC
2014-07-24 843-291-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2014-07-17 843-203-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2014-07-14 843-510-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F WALTERBORO SC
2014-07-10 843-203-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2014-07-10 843-505-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLUFFTON SC
2014-07-10 843-505-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLUFFTON SC
2014-07-07 843-231-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MYRTLE BCH SC
2014-07-07 843-231-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MYRTLE BCH SC
2014-07-07 843-231-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MYRTLE BCH SC
2014-07-02 843-945-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MYRTLE BCH SC
2014-06-18 843-415-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HILTONHEAD SC
2014-06-12 843-466-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F LAUREL BAY SC
2014-06-11 843-631-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F EDISTO IS SC
2014-06-10 843-732-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SULLIVNSIS SC
2014-06-10 843-900-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERVL SC
2014-06-10 843-900-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERVL SC
2014-06-09 843-510-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 WALTERBORO SC
2014-06-09 843-580-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F FOLLYBEACH SC
2014-06-09 843-580-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F FOLLYBEACH SC
2014-06-04 843-203-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2014-06-03 843-505-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLUFFTON SC
2014-05-23 843-781-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BEAUFORT SC
2014-05-23 843-781-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BEAUFORT SC
2014-05-22 843-715-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K HILTONHEAD SC
2014-05-21 843-456-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 BENNETTSVL SC
2014-05-20 843-254-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 EASTCONWAY SC
2014-05-19 843-310-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F LOWCOUNTRY SC
2014-05-16 843-212-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2014-05-16 843-212-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2014-05-16 843-212-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2014-05-16 843-212-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2014-05-16 843-212-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2014-05-16 843-212-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2014-05-16 843-214-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2014-05-16 843-620-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F HOLLYWOOD SC
2014-05-14 843-507-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 NEWTONVL SC
2014-05-14 843-508-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ROWLAND SC
2014-05-09 843-285-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 5344 SUMMERVL SC
2014-05-07 843-826-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2014-04-22 843-536-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FLORENCE SC
2014-04-11 843-284-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F MTPLEASANT SC
2014-04-11 843-352-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F MTPLEASANT SC
2014-04-08 843-231-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MYRTLE BCH SC
2014-04-04 843-203-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2014-03-26 843-203-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2014-03-25 843-804-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2014-03-25 843-804-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2014-03-25 843-804-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2014-03-25 843-804-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 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.