NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, last 30 days — NPA 774
NEW CINGULAR WIRELESS PCS, LLC - DC 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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-11-18 774-499 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIDGEWTR MA
2021-11-16 774-496 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2021-10-22 774-789 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BARNSTABLE MA
2021-09-30 774-828 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WORCESTER MA
2021-09-09 774-494 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROCKTON MA
2021-08-18 774-493 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2021-07-16 774-492 0XXX2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D NATICK MA
2021-07-15 774-599 0XXX1XXX2XXX5XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H MARLBORO MA
2021-07-15 774-699 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H PLYMOUTH MA
2021-07-14 774-491 0XXX4XXX · 2 holders which blocks → TELNYX LLC 073H MATTAPOSTT MA
2021-06-29 774-486 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MILLBURY MA
2021-06-14 774-483 3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MA 892D CATAUMET MA
2021-06-14 774-485 2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MA 892D NANTUCKET MA
2021-05-19 774-732 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FRAMINGHAM MA
2021-05-19 774-786 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MANSFIELD MA
2021-05-19 774-899 0XXX1XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NOBROOKFLD MA
2021-05-17 774-758 6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H BELLINGHAM MA
2021-05-17 774-842 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BROCKTON MA
2021-05-14 774-623 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BARNSTABLE MA
2021-05-12 774-733 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 DENNIS MA
2021-05-10 774-476 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BARNSTABLE MA
2021-05-06 774-475 0XXX1XXX5XXX7XXX8XXX · 3 holders which blocks → VONAGE AMERICA LLC 197D MARLBORO MA
2021-04-01 774-468 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - MA 892D REHOBOTH MA
2021-04-01 774-472 0XXX1XXX2XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D UXBRIDGE MA
2021-04-01 774-514 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D GRAFTON MA
2021-04-01 774-527 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MA 892D HOLLISTON MA
2021-04-01 774-537 0XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - MA 892D UPTON MA
2021-04-01 774-542 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MA 892D RUTLAND MA
2021-04-01 774-547 0XXX4XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - MA 892D SIASCONSET MA
2021-04-01 774-572 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MA 892D OXFORD MA
2021-04-01 774-574 4XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - MA 892D LEICESTER MA
2021-04-01 774-577 2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - MA 892D MATTAPOSTT MA
2021-04-01 774-647 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MA 892D NO ATTLEBO MA
2021-04-01 774-664 2XXX6XXX · 2 holders which blocks → ONVOY, LLC - MA 892D NO SWANSEA MA
2021-04-01 774-667 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MA 892D WAREHAM MA
2021-04-01 774-674 1XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - MA 892D DIGHTON MA
2021-04-01 774-714 0XXX1XXX2XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → ONVOY, LLC - MA 892D FOXBORO MA
2021-04-01 774-724 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D CHARLTON MA
2021-04-01 774-734 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MA 892D CHATHAM MA
2021-04-01 774-784 0XXX2XXX4XXX6XXX7XXX9XXX · 6 holders which blocks → ONVOY, LLC - MA 892D CHILMARK MA
2021-04-01 774-787 0XXX1XXX2XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D EDGARTOWN MA
2021-04-01 774-844 0XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MA 892D WESTPORT MA
2021-04-01 774-874 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - MA 892D WAYLAND MA
2021-03-24 774-467 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2021-03-17 774-465 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → STRATUS NETWORKS 495J NORTON MA
2021-03-17 774-466 3XXX4XXX6XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BOYLSTON MA
2021-03-17 774-533 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BRIDGEWTR MA
2021-03-17 774-557 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BUZZARDSBY MA
2021-03-17 774-677 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H ATTLEBORO MA
2021-03-17 774-744 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BLACKSTONE MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.