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
2014-03-21 228-437-2XXX 2000–2999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
2014-03-21 228-437-3XXX 3000–3999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
2014-03-21 228-437-4XXX 4000–4999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
2014-03-21 228-437-5XXX 5000–5999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
2014-03-21 228-437-6XXX 6000–6999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
2014-03-21 228-437-7XXX 7000–7999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
2014-02-28 228-280-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 BILOXI MS
2014-02-18 228-641-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MS 992E TANNERWLMS MS
2014-02-11 228-346-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GULFPORT MS
2014-01-23 228-351-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 GULFPORT MS
2014-01-21 228-460-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA MS - LLC 458C MOSS POINT MS
2013-10-02 228-220-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BAYSTLOUIS MS
2013-09-26 228-213-2XXX 2000–2999Assigned METROPCS, INC. 5562 GULFPORT MS
2013-09-26 228-213-3XXX 3000–3999Assigned METROPCS, INC. 5562 GULFPORT MS
2013-09-05 228-304-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BAYSTLOUIS MS
2013-09-03 228-281-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS
2013-07-01 228-282-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J OCEAN SPG MS
2013-07-01 228-574-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF MISSISSIPPI, LLC - MS 220C GULFPORT MS
2013-05-31 228-689-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BAYSTLOUIS MS
2013-05-20 228-546-1XXX 1000–1999Assigned METROPCS, INC. 5562 BILOXI MS
2013-05-20 228-641-7XXX 7000–7999Assigned METROPCS, INC. 5562 TANNERWLMS MS
2013-04-18 228-220-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA MS - LLC 458C BAYSTLOUIS MS
2012-11-16 228-641-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MS 992E TANNERWLMS MS
2012-09-05 228-222-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K PASSCHRSTN MS
2012-09-05 228-305-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K PEARLINGTN MS
2012-08-23 228-231-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K BAYSTLOUIS MS
2012-08-03 228-284-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 GULFPORT MS
2012-07-24 228-213-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA MS - LLC 458C GULFPORT MS
2012-07-11 228-281-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS
2012-06-29 228-271-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2012-03-12 228-281-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS
2012-02-28 228-438-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF MISSISSIPPI, LLC - MS 220C BILOXI MS
2012-02-21 228-712-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
2012-02-21 228-712-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
2012-02-15 228-273-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BILOXI MS
2012-01-26 228-533-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PEARLINGTN MS
2012-01-09 228-563-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2012-01-09 228-563-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2012-01-09 228-563-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2011-12-13 228-205-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PASCAGOULA MS
2011-12-13 228-826-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 VANCLEAVE MS
2011-11-23 228-254-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 PASSCHRSTN MS
2011-11-10 228-355-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS
2011-10-28 228-334-1XXX 1000–1999Assigned CELLULAR SOUTH, INC. 6581 OCEAN SPG MS
2011-10-20 228-934-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
2011-10-18 228-220-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BAYSTLOUIS MS
2011-10-04 228-731-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2011-10-04 228-731-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2011-08-04 228-200-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C HURLEY MS
2011-05-27 228-285-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MS 5178 MOSS POINT 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.