NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 618
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 2
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
2010-07-09 618-412-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2010-06-17 618-641-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2010-06-17 618-641-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2010-06-17 618-651-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HIGHLAND IL
2010-06-11 618-294-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 HARRISBURG IL
2010-06-07 618-513-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2010-05-27 618-823-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2010-05-21 618-571-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PINCKNEYVL IL
2010-05-20 618-305-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARBONDALE IL
2010-05-20 618-381-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2010-05-20 618-381-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2010-05-20 618-387-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARMI IL
2010-05-20 618-570-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2010-05-20 618-578-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2010-05-20 618-731-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2010-05-20 618-731-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2010-05-20 618-944-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2010-05-12 618-881-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K ALTAMONT IL
2010-04-23 618-294-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 HARRISBURG IL
2010-04-23 618-460-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F LOUISVILLE IL
2010-04-23 618-461-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K ST ELMO IL
2010-04-23 618-480-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F OBLONG IL
2010-04-16 618-513-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2010-04-15 618-212-2XXX 2000–2999Assigned MCC TELEPHONY LLC 593K BELLEVILLE IL
2010-04-15 618-245-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K FARINA IL
2010-04-15 618-340-7XXX 7000–7999Assigned MCC TELEPHONY LLC 593K RED BUD IL
2010-04-15 618-563-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HUTSONVL IL
2010-04-15 618-586-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F PALESTINE IL
2010-04-14 618-472-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MT VERNON IL
2010-04-14 618-472-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MT VERNON IL
2010-04-13 618-758-5XXX 5000–5999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F COULTERVL IL
2010-04-13 618-893-3XXX 3000–3999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F COBDEN IL
2010-03-24 618-430-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K HECKER IL
2010-03-24 618-469-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ROBINSON IL
2010-03-22 618-726-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J O FALLON IL
2010-03-17 618-252-9XXX 9000–9999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HARRISBURG IL
2010-03-17 618-273-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ELDORADO IL
2010-03-17 618-364-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MARION IL
2010-03-17 618-386-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HURST IL
2010-03-17 618-449-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F SPARTA IL
2010-03-17 618-542-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F DU QUOIN IL
2010-03-17 618-565-5XXX 5000–5999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MURPHYSBO IL
2010-03-17 618-568-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ELKVILLE IL
2010-03-17 618-587-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F TILDEN IL
2010-03-17 618-596-7XXX 7000–7999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ZEIGLER IL
2010-03-17 618-649-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MOUNDS IL
2010-03-17 618-681-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CARTERVL IL
2010-03-17 618-742-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MOUND CITY IL
2010-03-17 618-844-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CARLYLE IL
2010-03-17 618-867-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F DE SOTO IL

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.