NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

13 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 228
ONVOY, LLC - MS 9
OPENTACT INC. 1
INTRADO COMMUNICATIONS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 1
AHOI LLC 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2006-12-12 228-233-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2006-12-12 228-243-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2006-12-12 228-243-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2006-12-12 228-627-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
2006-11-22 228-456-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 BILOXI MS
2006-11-22 228-471-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 PASCAGOULA MS
2006-11-01 228-382-2XXX 2000–2999Assigned CELLULAR SOUTH, INC. 6581 OCEAN SPG MS
2006-08-28 228-285-2XXX 2000–2999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOSS POINT MS
2006-08-28 228-285-3XXX 3000–3999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOSS POINT MS
2006-08-23 228-222-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PASSCHRSTN MS
2006-08-23 228-222-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PASSCHRSTN MS
2006-08-23 228-222-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PASSCHRSTN MS
2006-08-16 228-233-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2006-08-16 228-233-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2006-07-24 228-447-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 OCEAN SPG MS
2006-04-18 228-376-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-04-18 228-376-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2006-03-23 228-273-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BILOXI MS
2006-03-10 228-265-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2006-03-10 228-265-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2006-03-10 228-282-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OCEAN SPG MS
2006-03-10 228-372-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
2006-02-13 228-273-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J BILOXI MS
2005-11-22 228-348-8XXX 8000–8999Assigned METROPCS, INC. 5562 BILOXI MS
2005-11-18 228-233-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2005-11-18 228-233-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2005-11-18 228-233-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2005-11-18 228-265-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-11-18 228-265-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-11-08 228-369-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS
2005-11-02 228-447-5XXX 5000–5999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 OCEAN SPG MS
2005-11-02 228-447-7XXX 7000–7999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 OCEAN SPG MS
2005-10-28 228-223-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-10-28 228-229-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2005-10-28 228-238-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OCEAN SPG MS
2005-10-28 228-265-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-10-28 228-282-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OCEAN SPG MS
2005-10-28 228-627-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
2005-10-10 228-328-3XXX 3000–3999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
2005-09-28 228-323-8XXX 8000–8999Assigned METROPCS, INC. 5562 GULFPORT MS
2005-09-22 228-223-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-09-22 228-223-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS

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.