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 574
MCC TELEPHONY OF THE MID-WEST, LLC - IN 21
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
2010-12-21 574-400-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F SOUTH BEND IN
2010-11-08 574-635-0XXX 0000–0999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F CULVER IN
2010-06-22 574-348-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F HAMLET IN
2010-06-22 574-804-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F NO LIBERTY IN
2010-06-18 574-363-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F BOURBON IN
2010-06-11 574-203-3XXX 3000–3999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F LAPAZ IN
2010-06-11 574-207-5XXX 5000–5999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F KNOX IN
2010-06-11 574-241-2XXX 2000–2999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F NO JUDSON IN
2010-06-11 574-263-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F TIPPECANOE IN
2010-06-11 574-279-2XXX 2000–2999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F WALKERTON IN
2010-06-11 574-281-3XXX 3000–3999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F ARGOS IN
2010-06-11 574-316-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F PLYMOUTH IN
2010-06-11 574-696-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F MILFORD IN
2010-05-17 574-221-2XXX 2000–2999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F NAPPANEE IN
2010-05-17 574-244-2XXX 2000–2999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F NO WEBSTER IN
2010-05-17 574-248-6XXX 6000–6999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F BREMEN IN
2010-05-17 574-253-6XXX 6000–6999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F LEESBURG IN
2010-05-17 574-306-3XXX 3000–3999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F WARSAW IN
2010-05-17 574-688-0XXX 0000–0999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F PIERCETON IN
2010-04-16 574-337-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F SYRACUSE IN
2006-03-15 574-221-4XXX 4000–4999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F NAPPANEE IN

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.