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
2007-03-30 843-467-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 MYRTLE BCH SC
2007-03-23 843-465-5XXX 5000–5999Assigned METROPCS, INC. 5562 CONWAY SC
2007-03-23 843-465-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CONWAY SC
2007-03-22 843-377-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2007-03-22 843-557-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2007-03-22 843-566-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2007-03-16 843-715-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K HILTONHEAD SC
2007-03-14 843-573-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2007-03-14 843-576-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2007-03-14 843-737-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2007-03-05 843-302-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J CHARLESTON SC
2007-03-05 843-609-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2007-03-05 843-609-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2007-03-05 843-609-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2007-02-28 843-635-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 NWALTERBOR SC
2007-02-23 843-278-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2007-02-22 843-535-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BENNETTSVL SC
2007-02-21 843-217-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WALTERBORO SC
2007-02-20 843-271-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BEAUFORT SC
2007-02-15 843-432-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2007-02-15 843-468-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2007-02-15 843-468-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2007-02-09 843-473-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 288B BEAUFORT SC
2007-02-09 843-584-5XXX 5000–5999Assigned METROPCS, INC. 5562 WALTERBORO SC
2007-02-09 843-972-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 288B MTPLEASANT SC
2007-02-08 843-639-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HARTSVILLE SC
2007-02-05 843-285-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SUMMERVL SC
2007-02-05 843-926-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-05 843-926-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2007-02-01 843-277-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2007-02-01 843-277-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2007-02-01 843-277-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2007-02-01 843-627-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 DILLON SC
2007-01-25 843-486-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 288B SUMMERVL SC
2007-01-19 843-291-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONCKS COR SC
2007-01-09 843-922-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HARLEYVL SC
2007-01-09 843-933-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HEMINGWAY SC
2007-01-08 843-701-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ST GEORGE SC
2007-01-03 843-631-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 EDISTO IS SC
2007-01-03 843-883-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SULLIVNSIS SC
2007-01-02 843-493-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K PAMPLICO SC
2006-12-29 843-561-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K MULLINS 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.