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
2013-10-28 336-493-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2013-10-28 336-493-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2013-10-28 336-493-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2013-10-28 336-929-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2013-10-28 336-929-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2013-10-15 336-493-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHEBORO NC
2013-10-15 336-530-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELKIN NC
2013-10-08 336-477-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOCKSVILLE NC
2013-10-04 336-466-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BROOKS NC
2013-09-30 336-934-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2013-09-30 336-934-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2013-09-27 336-875-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2013-09-27 336-875-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2013-09-27 336-875-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2013-09-27 336-875-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2013-09-20 336-365-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBORO NC
2013-09-19 336-477-1XXX 1000–1999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F MOCKSVILLE NC
2013-09-12 336-914-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E DANBURY NC
2013-09-11 336-893-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WINSTN SAL NC
2013-09-05 336-383-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2013-09-05 336-895-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2013-08-30 336-296-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 KING NC
2013-08-16 336-518-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 YADKINVL NC
2013-08-15 336-554-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 GREENSBORO NC
2013-07-25 336-265-4XXX 4000–4999Assigned FRONTIER COMMUNICATIONS OF AMERICA, INC. - NC 440G GREENSBORO NC
2013-07-09 336-466-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BROOKS NC
2013-06-28 336-933-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 YANCEYVL NC
2013-06-28 336-985-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 KING NC
2013-06-26 336-867-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 LEXINGTON NC
2013-06-19 336-645-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2013-06-19 336-645-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2013-06-19 336-645-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2013-06-19 336-739-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E SAXAPAHAW NC
2013-06-17 336-934-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WINSTN SAL NC
2013-06-12 336-615-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2013-06-05 336-466-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BROOKS NC
2013-06-05 336-536-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 WALNUTCOVE NC
2013-06-05 336-754-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 WALKERTOWN NC
2013-05-23 336-904-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KERNERSVL NC
2013-05-23 336-936-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 MOCKSVILLE NC
2013-05-21 336-490-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 DENTON NC
2013-05-20 336-493-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2013-05-20 336-844-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 NOWILKESBO NC
2013-05-15 336-281-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E QUAKER GAP NC
2013-05-13 336-849-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 YADKINVL NC
2013-04-22 336-582-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2013-04-22 336-582-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2013-04-22 336-582-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2013-04-22 336-582-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2013-04-22 336-582-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL 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.