NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

21 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 337
ONVOY, LLC - LA 17
NEW CINGULAR WIRELESS PCS, LLC - GA 2
CSC WIRELESS, LLC 2
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2004-07-07 337-393-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J RAYNE LA
2004-07-07 337-578-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BALDWIN LA
2004-07-07 337-579-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J JEANERETTE LA
2004-07-07 337-857-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J YOUNGSVL LA
2004-07-07 337-886-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CARENCRO LA
2004-06-25 337-316-4XXX 4000–4999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2004-06-22 337-322-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2004-06-22 337-349-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2004-06-22 337-349-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2004-06-21 337-393-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 RAYNE LA
2004-06-15 337-579-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JEANERETTE LA
2004-06-14 337-513-2XXX 2000–2999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-06-14 337-513-3XXX 3000–3999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-06-07 337-326-1XXX 1000–1999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2004-05-19 337-250-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2004-05-12 337-322-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2004-05-12 337-322-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2004-05-12 337-580-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2004-04-26 337-412-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2004-04-07 337-322-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2004-03-29 337-513-5XXX 5000–5999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-03-29 337-513-6XXX 6000–6999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-03-29 337-513-7XXX 7000–7999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-03-23 337-393-9XXX 9000–9999Assigned AT&T - LOCAL 7421 RAYNE LA
2004-03-11 337-513-8XXX 8000–8999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-03-04 337-322-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2004-03-04 337-397-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2004-02-26 337-326-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2004-02-24 337-912-4XXX 4000–4999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-02-24 337-912-5XXX 5000–5999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-02-11 337-912-8XXX 8000–8999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-02-11 337-912-9XXX 9000–9999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-01-26 337-578-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BALDWIN LA
2004-01-26 337-831-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VL PLATTE LA
2004-01-20 337-513-9XXX 9000–9999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-01-12 337-330-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BROUSSARD LA
2003-12-26 337-397-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2003-12-26 337-401-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE RIDDER LA
2003-12-23 337-405-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2003-12-10 337-397-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2003-12-10 337-397-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2003-12-05 337-405-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2003-11-26 337-313-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J SULPHUR LA
2003-11-26 337-313-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J SULPHUR LA
— 337-656-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA

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.