NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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, last 30 days — NPA 413
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6
BANDWIDTH.COM CLEC, LLC - MA 5
NEW CINGULAR WIRELESS PCS, LLC - DC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1
AHOI LLC 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2020-04-23 413-287-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D RUSSELL MA
2020-04-23 413-287-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D RUSSELL MA
2020-04-23 413-299-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D HATFIELD MA
2020-04-23 413-299-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HATFIELD MA
2020-04-23 413-436-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D WARREN MA
2020-04-07 413-379-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-07 413-379-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2020-04-06 413-240-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2020-04-02 413-312-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-312-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-334-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-334-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-334-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-334-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-334-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-334-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-04-02 413-334-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-03-30 413-326-7XXX 7000–7999Assigned METROPCS, INC. 5562 NORTHAMPTN MA
2020-03-26 413-368-0XXX 0000–0999Assigned INTRADO COMMUNICATIONS, LLC 116E SPRINGFLD MA
2020-03-26 413-368-1XXX 1000–1999Assigned INTRADO COMMUNICATIONS, LLC 116E SPRINGFLD MA
2020-03-26 413-368-8XXX 8000–8999Assigned INTRADO COMMUNICATIONS, LLC 116E SPRINGFLD MA
2020-03-26 413-368-9XXX 9000–9999Assigned INTRADO COMMUNICATIONS, LLC 116E SPRINGFLD MA
2020-03-19 413-291-6XXX 6000–6999Assigned METROPCS, INC. 5562 SPRINGFLD MA
2020-03-19 413-291-7XXX 7000–7999Assigned METROPCS, INC. 5562 SPRINGFLD MA
2020-03-18 413-769-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PITTSFIELD MA
2020-02-21 413-326-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHAMPTN MA
2020-02-21 413-326-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHAMPTN MA
2020-02-20 413-361-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J SPRINGFLD MA
2020-02-20 413-655-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K HINSDALE MA
2020-02-06 413-861-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2020-02-06 413-861-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2019-12-20 413-264-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2019-12-20 413-264-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2019-12-20 413-264-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2019-12-20 413-286-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2019-12-20 413-286-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.