NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

4 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 336
HD CARRIER LLC 3
ONVOY, LLC - NC 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-04-06 336-589-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 EDEN NC
2005-04-06 336-591-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WALNUTCOVE NC
2005-04-06 336-824-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 RAMSEUR NC
2005-04-01 336-939-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 RUFFIN NC
2005-03-29 336-289-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2005-03-23 336-428-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ELKIN NC
2005-03-23 336-428-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ELKIN NC
2005-03-22 336-308-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ASHEBORO NC
2005-03-19 336-455-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 GREENSBORO NC
2005-03-15 336-207-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2005-03-15 336-261-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2005-03-15 336-465-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ASHEBORO NC
2005-03-15 336-480-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2005-03-14 336-844-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 NOWILKESBO NC
2005-03-07 336-792-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BURLINGTON NC
2005-03-07 336-792-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BURLINGTON NC
2005-03-01 336-232-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 GREENSBORO NC
2005-02-28 336-232-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 GREENSBORO NC
2005-02-22 336-307-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2005-02-18 336-425-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 LEXINGTON NC
2005-02-18 336-679-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 YADKINVL NC
2005-02-17 336-264-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2005-02-17 336-480-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2005-02-16 336-262-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NOWILKESBO NC
2005-02-16 336-262-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NOWILKESBO NC
2005-02-09 336-201-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WINSTN SAL NC
2005-02-08 336-421-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ANDERSON NC
2005-02-08 336-441-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SUMMERFLD NC
2005-02-08 336-685-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 JULIAN NC
2005-02-08 336-939-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RUFFIN NC
2005-01-31 336-736-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2005-01-20 336-423-6XXX 6000–6999Assigned METROPCS, INC. 5562 KERNERSVL NC
2005-01-18 336-425-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEXINGTON NC
2005-01-18 336-425-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEXINGTON NC
2005-01-18 336-425-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEXINGTON NC
2005-01-18 336-443-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DOBSON NC
2005-01-18 336-453-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MADISON NC
2005-01-18 336-453-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MADISON NC
2005-01-15 336-790-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2005-01-15 336-793-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2005-01-13 336-301-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ASHEBORO NC
2005-01-11 336-264-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2005-01-11 336-409-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2005-01-11 336-409-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2005-01-11 336-413-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2005-01-11 336-596-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2005-01-11 336-596-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2005-01-06 336-512-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2005-01-06 336-791-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 REIDSVILLE NC
2004-12-29 336-428-6XXX 6000–6999Assigned METROPCS, INC. 5562 ELKIN NC

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.