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
TELEPORT COMMUNICATIONS AMERICA, LLC - MO 83
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
2025-11-12 573-713-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 FARMINGTON MO
2024-09-30 573-905-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 JEFFERSNCY MO
2024-09-30 573-905-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 JEFFERSNCY MO
2024-09-30 573-905-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 JEFFERSNCY MO
2024-08-15 573-512-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 FTLENARDWD MO
2023-07-05 573-902-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 PERRYVILLE MO
2023-06-06 573-902-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 PERRYVILLE MO
2023-06-02 573-902-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 PERRYVILLE MO
2023-06-02 573-902-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 PERRYVILLE MO
2023-06-02 573-902-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 PERRYVILLE MO
2023-06-02 573-902-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 PERRYVILLE MO
2023-03-29 573-425-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 HUNNEWELL MO
2023-03-22 573-233-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 CHARLESTON MO
2023-03-17 573-423-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 BELLEVIEW MO
2023-03-16 573-671-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 LICKING MO
2022-07-05 573-726-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 BERNIE MO
2022-01-13 573-540-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 COLUMBIA MO
2021-06-01 573-510-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 JACKSON MO
2021-02-23 573-809-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 MOKANE MO
2020-10-15 573-731-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 MONROECITY MO
2020-10-15 573-765-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 RICHLAND MO
2020-09-08 573-630-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 BONNETERRE MO
2020-07-15 573-312-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 ELSBERRY MO
2020-02-19 573-417-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 LINN MO
2020-02-04 573-899-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 ST JAMES MO
2020-02-04 573-937-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 WAYNESVL MO
2020-01-31 573-507-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 COLUMBIA MO
2020-01-25 573-894-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 SHELBYVL MO
2019-12-16 573-389-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 OAK RIDGE MO
2019-12-11 573-564-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 MONTGORYCY MO
2019-10-08 573-658-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 JEFFERSNCY MO
2019-09-27 573-708-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 CAPEGIRARD MO
2019-08-29 573-317-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 CAMDENTON MO
2019-08-14 573-658-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 JEFFERSNCY MO
2019-06-27 573-813-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 E PRAIRIE MO
2019-04-12 573-677-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 CUBA MO
2019-04-10 573-982-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 CENTRALIA MO
2018-10-04 573-232-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 ST ROBERT MO
2018-09-28 573-250-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 CLARKSVL MO
2018-08-15 573-304-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 CALIFORNIA MO
2018-07-12 573-436-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 POTOSI MO
2017-06-27 573-502-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 GRAVOIS ML MO
2017-06-01 573-504-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 PUXICO MO
2017-03-06 573-605-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 PERRYVILLE MO
2016-08-09 573-742-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 BOWLNGGREN MO
2016-08-01 573-375-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 ELDON MO
2016-06-03 573-561-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 FREDERCKTN MO
2016-01-15 573-284-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 VERSAILLES MO
2015-06-18 573-702-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 BLOOMSDALE MO
2015-06-11 573-901-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 MALDEN 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.