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 573
CHARTER IP ENABLED SERVICES, LLC 116
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2025-08-06 573-495-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CLUBB MO
2025-08-06 573-504-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PUXICO MO
2025-06-18 573-377-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K STOVER MO
2025-06-18 573-824-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ALTEBGFRHN MO
2025-02-20 573-491-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NEWBLOMFLD MO
2024-11-11 573-415-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K JEFFERSNCY MO
2024-09-17 573-637-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LESTERVL MO
2024-09-17 573-650-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K POTOSI MO
2024-09-17 573-925-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CENTERVL MO
2024-07-03 573-678-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RICHWOODS MO
2024-06-17 573-641-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CLARK MO
2024-06-12 573-687-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K STURGEON MO
2024-06-04 573-766-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELGRADE MO
2024-05-01 573-942-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SANTA FE MO
2024-03-07 573-423-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELLEVIEW MO
2024-03-07 573-779-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CALEDONIA MO
2023-12-05 573-390-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OLDAPPLETN MO
2023-10-09 573-749-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K IRONDALE MO
2023-09-29 573-401-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST MARYS MO
2023-05-10 573-867-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ELSBERRY MO
2023-05-05 573-640-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SILEX MO
2022-04-25 573-669-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NEW HARTFD MO
2022-04-15 573-389-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OAK RIDGE MO
2022-04-07 573-349-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PATTON MO
2022-04-07 573-741-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MARBLEHILL MO
2021-10-19 573-847-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PAYNESVL MO
2021-10-06 573-790-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CLARKSVL MO
2021-10-01 573-913-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BLOOMSDALE MO
2021-10-01 573-973-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K EOLIA MO
2021-02-24 573-784-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FRANKFORD MO
2021-02-16 573-661-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BOWLNGGREN MO
2021-01-25 573-939-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VANDALIA MO
2020-09-04 573-900-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PERRYVILLE MO
2018-12-21 573-753-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K STEELVILLE MO
2018-12-21 573-849-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FARBER MO
2018-12-18 573-468-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SULLIVAN MO
2018-11-30 573-386-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K AUXVASSE MO
2018-11-30 573-835-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NEWFLORNCE MO
2018-11-09 573-696-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HALLSVILLE MO
2018-10-03 573-492-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MARTINSBG MO
2018-07-20 573-803-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CAPEGIRARD MO
2018-04-20 573-302-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LKOZKOSBCH MO
2018-01-22 573-675-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WYATT MO
2018-01-22 573-722-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ADVANCE MO
2018-01-22 573-733-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELL CITY MO
2018-01-22 573-794-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K DELTA MO
2018-01-22 573-833-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K POCAHONTAS MO
2017-06-07 573-598-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ANNAPOLIS MO
2017-04-11 573-803-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CAPEGIRARD MO
2016-12-13 573-373-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADDONIA MO

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.