NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 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
2006-06-09 336-380-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2006-06-02 336-235-9XXX 9000–9999Assigned METROPCS, INC. 5562 GREENSBORO NC
2006-05-30 336-837-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2006-05-30 336-837-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2006-05-26 336-485-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SUMMERFLD NC
2006-05-24 336-489-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WJEFFERSON NC
2006-05-23 336-280-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 REIDSVILLE NC
2006-05-23 336-677-1XXX 1000–1999Assigned YADKIN VALLEY TELECOM, INC. - NC 5418 YADKINVL NC
2006-05-23 336-753-1XXX 1000–1999Assigned YADKIN VALLEY TELECOM, INC. - NC 5418 MOCKSVILLE NC
2006-05-23 336-951-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 REIDSVILLE NC
2006-05-17 336-428-5XXX 5000–5999Assigned METROPCS, INC. 5562 ELKIN NC
2006-05-17 336-455-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2006-05-16 336-306-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2006-05-16 336-306-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2006-05-16 336-505-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 KIMESVILLE NC
2006-05-12 336-289-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2006-05-12 336-358-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J GREENSBORO NC
2006-05-12 336-452-0XXX 0000–0999Assigned CAROLINA WEST WIRELESS, INC. 5932 LOMAX NC
2006-05-10 336-270-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2006-05-10 336-343-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2006-05-09 336-505-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 KIMESVILLE NC
2006-05-04 336-231-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2006-05-04 336-231-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2006-05-03 336-252-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2006-05-03 336-252-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2006-05-02 336-736-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2006-05-02 336-792-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2006-04-19 336-307-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2006-04-17 336-329-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BURLINGTON NC
2006-04-14 336-358-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J GREENSBORO NC
2006-04-07 336-329-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BURLINGTON NC
2006-03-31 336-506-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BURLINGTON NC
2006-03-24 336-505-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J KIMESVILLE NC
2006-03-24 336-554-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2006-03-21 336-880-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2006-03-17 336-280-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 REIDSVILLE NC
2006-03-17 336-280-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 REIDSVILLE NC
2006-03-14 336-235-5XXX 5000–5999Assigned METROPCS, INC. 5562 GREENSBORO NC
2006-03-14 336-235-8XXX 8000–8999Assigned METROPCS, INC. 5562 GREENSBORO NC
2006-03-10 336-331-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2006-03-10 336-404-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2006-03-10 336-404-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2006-03-10 336-404-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2006-03-10 336-460-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ASHEBORO NC
2006-03-10 336-460-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ASHEBORO NC
2006-03-07 336-289-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 HIGH POINT NC
2006-02-24 336-397-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 WINSTN SAL NC
2006-02-24 336-397-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 WINSTN SAL NC
2006-02-17 336-429-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 MOUNT AIRY NC
2006-02-10 336-329-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BURLINGTON NC

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.