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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-08-10 228-243-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2005-06-22 228-243-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2005-06-16 228-447-8XXX 8000–8999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 OCEAN SPG MS
2005-06-16 228-447-9XXX 9000–9999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 OCEAN SPG MS
2005-06-14 228-276-3XXX 3000–3999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
2005-06-14 228-276-4XXX 4000–4999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
2005-06-14 228-276-5XXX 5000–5999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
2005-06-14 228-276-6XXX 6000–6999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
2005-06-14 228-276-7XXX 7000–7999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
2005-05-09 228-282-4XXX 4000–4999Assigned CELLULAR SOUTH, INC. 6581 OCEAN SPG MS
2005-05-09 228-282-5XXX 5000–5999Assigned CELLULAR SOUTH, INC. 6581 OCEAN SPG MS
2005-04-19 228-220-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BAYSTLOUIS MS
2005-04-19 228-222-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J PASSCHRSTN MS
2005-04-19 228-282-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J OCEAN SPG MS
2005-04-19 228-285-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J MOSS POINT MS
2005-03-31 228-273-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2005-03-09 228-229-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2005-03-09 228-229-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2005-03-09 228-229-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2005-02-14 228-229-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2005-02-08 228-223-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-02-08 228-223-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-02-08 228-223-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2005-02-01 228-284-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 GULFPORT MS
2005-01-24 228-220-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BAYSTLOUIS MS
2004-12-07 228-239-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2004-12-06 228-273-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF MISSISSIPPI, LLC - MS 220C BILOXI MS
2004-12-06 228-273-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2004-11-05 228-239-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2004-10-20 228-283-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 VANCLEAVE MS
2004-10-20 228-285-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 MOSS POINT MS
2004-10-20 228-533-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PEARLINGTN MS
2004-10-20 228-588-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 HURLEY MS
2004-10-13 228-239-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2004-10-06 228-223-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2004-10-06 228-223-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2004-10-06 228-282-3XXX 3000–3999Assigned CELLULAR SOUTH, INC. 6581 OCEAN SPG MS
2004-10-04 228-222-1XXX 1000–1999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 PASSCHRSTN MS
2004-07-12 228-229-1XXX 1000–1999Assigned SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 BILOXI MS
2004-07-06 228-223-1XXX 1000–1999Assigned CELLULAR SOUTH, INC. 6581 GULFPORT MS
2004-05-18 228-282-2XXX 2000–2999Assigned CELLULAR SOUTH, INC. 6581 OCEAN SPG MS
2004-05-04 228-276-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2004-05-04 228-276-2XXX 2000–2999Assigned TELEPAK NETWORKS, INC. - MS 5278 BILOXI MS
2004-04-09 228-285-9XXX 9000–9999Assigned AT&T - LOCAL 7421 MOSS POINT MS
2004-03-17 228-239-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2004-03-17 228-239-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2004-02-18 228-223-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2004-02-10 228-239-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BILOXI MS
2003-09-16 228-222-0XXX 0000–0999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 PASSCHRSTN MS
2003-09-04 228-265-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 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.