NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 507
MCC TELEPHONY OF MINNESOTA, LLC - MN 52
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 NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2023-06-21 507-909 0XXX1XXX8XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F NICOLLET MN
2022-04-08 507-890 0XXX1XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F WYKOFF MN
2018-08-21 507-619 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F FOUNTAIN MN
2010-06-17 507-586 0XXX1XXX7XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F LYLE MN
2010-06-17 507-587 1XXX8XXX9XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F RED DEL MN
2010-06-17 507-638 1XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F LAKEBENTON MN
2010-06-17 507-857 0XXX1XXX2XXX5XXX7XXX · 4 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F LEROY MN
2010-06-16 507-397 1XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F BROWNSVL MN
2010-04-01 507-574 1XXX2XXX3XXX4XXX5XXX7XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F ADAMS MN
2010-04-01 507-578 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F BUTTERFLD MN
2010-04-01 507-579 0XXX1XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F TYLER MN
2010-04-01 507-687 1XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F IVANHOE MN
2010-03-31 507-496 1XXX7XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F SPRINGFLD MN
2010-03-31 507-566 1XXX6XXX7XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F WINNEBAGO MN
2010-03-31 507-610 0XXX1XXX2XXX4XXX6XXX7XXX · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F LAFAYETTE MN
2010-03-31 507-679 1XXX4XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F WELLS MN
2010-03-31 507-682 1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F JANESVILLE MN
2010-03-31 507-745 1XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F WINTHROP MN
2010-03-31 507-748 0XXX1XXX3XXX6XXX7XXX8XXX · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F FULDA MN
2010-03-31 507-797 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F GIBBON MN
2010-03-31 507-818 1XXX8XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F FRANKLIN MN
2010-03-30 507-564 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F CHATFIELD MN
2010-03-30 507-616 0–9 XXXall 10 · 8 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F REDWOODFLS MN
2010-03-17 507-300 0XXX1XXX3XXX7XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F SLEEPY EYE MN
2010-03-15 507-519 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F ST PETER MN
2008-06-13 507-518 0XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F LANESBORO MN
2008-02-02 507-690 0–9 XXXall 10 · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F PIPESTONE MN
2007-07-26 507-791 4XXX6XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F DAKOTA MN
2007-07-26 507-880 0XXX7XXX8XXX9XXX · 4 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F MABEL MN
2007-07-26 507-939 4XXX6XXX9XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F HOKAH MN
2007-07-26 507-940 0XXX9XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F HOUSTON MN
2007-03-17 507-551 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F LACRESCENT MN
2006-09-22 507-659 0XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F PETERSON MN
2006-09-22 507-670 0XXX6XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F CANTON MN
2006-09-22 507-691 4XXX8XXX9XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F SPRING GRV MN
2006-09-22 507-729 5XXX6XXX · 2 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F RUSHFORD MN
2006-09-22 507-750 0XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F BROWNSVL MN
2006-06-13 507-922 0–9 XXXall 10 · 7 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F SPRING VLY MN
2006-06-13 507-969 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F W CONCORD MN
2006-05-22 507-559 9XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F WINTHROP MN
2006-05-22 507-660 6XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F WINNEBAGO MN
2006-05-22 507-751 none assigned yet which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F WELLS MN
2006-05-22 507-770 0XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F SPRINGFLD MN
2006-05-22 507-882 0XXX2XXX which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F SLEEPY EYE MN
2006-05-22 507-927 none assigned yet which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F FRANKLIN MN
2006-05-15 507-935 0–9 XXXall 10 · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F LUVERNE MN
2006-03-31 507-596 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F FAIRFAX MN
2005-02-19 507-636 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F MOUNTAINLK MN
2004-07-15 507-203 0–9 XXXall 10 · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F BROWNSDALE MN
2004-07-02 507-891 0XXX1XXX2XXX · 3 holders which blocks → MCC TELEPHONY OF MINNESOTA, LLC - MN 719F MANTORVL MN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.