NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 217
MCC TELEPHONY LLC 42
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
2022-05-26 217-200-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K CHAMPAURBN IL
2022-05-26 217-687-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K SEYMOUR IL
2016-05-04 217-745-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K SIBLEY IL
2013-03-04 217-282-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K RANTOUL IL
2010-06-30 217-551-2XXX 2000–2999Assigned MCC TELEPHONY LLC 593K HAMILTON IL
2010-06-30 217-966-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K LOMAX IL
2010-06-30 217-980-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K NAUVOO IL
2010-06-30 217-989-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K DALLASCITY IL
2010-06-10 217-955-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K GREENVIEW IL
2010-06-01 217-219-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K CARTHAGE IL
2010-05-21 217-303-7XXX 7000–7999Assigned MCC TELEPHONY LLC 593K SPRINGFLD IL
2010-05-21 217-364-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K BUFFALO IL
2010-05-21 217-471-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K ROCHESTER IL
2010-05-21 217-487-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K CANTRALL IL
2010-05-21 217-488-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K NEW BERLIN IL
2010-05-21 217-624-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K LOAMI IL
2010-04-23 217-505-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K WARSAW IL
2010-02-04 217-514-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K MT AUBURN IL
2010-01-26 217-579-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K PAXTON IL
2010-01-26 217-599-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K TUSCOLA IL
2010-01-26 217-681-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K VILLAGROVE IL
2010-01-21 217-262-2XXX 2000–2999Assigned MCC TELEPHONY LLC 593K HAMMOND IL
2010-01-21 217-386-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K LODA IL
2010-01-21 217-388-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K MELVIN IL
2010-01-21 217-396-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K LUDLOW IL
2010-01-21 217-485-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K TOLONO IL
2010-01-21 217-489-6XXX 6000–6999Assigned MCC TELEPHONY LLC 593K MANSFIELD IL
2010-01-21 217-513-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K DE LAND IL
2010-01-21 217-564-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K IVESDALE IL
2010-01-21 217-568-2XXX 2000–2999Assigned MCC TELEPHONY LLC 593K GIFFORD IL
2010-01-21 217-590-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K MAHOMET IL
2010-01-21 217-631-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K MONTICELLO IL
2010-01-21 217-643-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K THOMASBORO IL
2010-01-21 217-678-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K BEMENT IL
2010-01-21 217-727-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K GIBSONCITY IL
2010-01-21 217-763-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K CERROGORDO IL
2010-01-21 217-867-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K PESOTUM IL
2010-01-21 217-897-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K FISHER IL
2010-01-11 217-282-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K RANTOUL IL
2010-01-11 217-292-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K SULLIVAN IL
2006-02-17 217-215-6XXX 6000–6999Assigned MCC TELEPHONY LLC 593K RANTOUL IL
2004-11-01 217-590-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K MAHOMET IL

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.