NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 339
NEW CINGULAR WIRELESS PCS, LLC - DC 1
EXIANT COMMUNICATIONS 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
2020-03-31 339-229-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WEYMOUTH MA
2020-03-19 339-217-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2020-03-19 339-217-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2020-03-19 339-217-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2020-03-19 339-217-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2020-01-10 339-338-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LYNN MA
2020-01-06 339-213-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2020-01-06 339-213-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2020-01-06 339-213-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2019-12-12 339-210-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SAUGUS MA
2019-12-10 339-210-4XXX 4000–4999Assigned VONAGE AMERICA LLC 197D SAUGUS MA
2019-11-15 339-229-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WEYMOUTH MA
2019-10-17 339-666-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D LYNN MA
2019-10-17 339-666-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D LYNN MA
2019-10-17 339-666-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D LYNN MA
2019-09-23 339-213-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2019-09-13 339-217-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2019-08-20 339-229-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WEYMOUTH MA
2019-07-23 339-338-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 LYNN MA
2019-06-10 339-364-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SHARON MA
2019-06-03 339-217-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2019-06-03 339-217-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2019-06-03 339-229-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2019-06-03 339-229-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2019-06-03 339-230-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D SHARON MA
2019-05-30 339-338-8XXX 8000–8999Assigned METROPCS, INC. 5562 LYNN MA
2019-05-30 339-338-9XXX 9000–9999Assigned METROPCS, INC. 5562 LYNN MA
2019-05-24 339-210-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SAUGUS MA
2019-05-02 339-210-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SAUGUS MA
2019-03-27 339-220-2XXX 2000–2999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BRYANTVL MA
2019-03-20 339-213-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 DEDHAM MA
2019-03-20 339-213-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 DEDHAM MA
2019-03-07 339-210-2XXX 2000–2999Assigned TELNYX LLC 073H SAUGUS MA
2019-02-22 339-229-9XXX 9000–9999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F WEYMOUTH MA
2019-02-22 339-800-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J ARLINGTON MA
2019-02-01 339-666-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LYNN MA
2019-01-25 339-213-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D DEDHAM MA
2019-01-25 339-218-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D HANOVER MA
2019-01-25 339-218-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D HANOVER MA
2019-01-24 339-213-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DEDHAM MA
2019-01-24 339-220-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D BRYANTVL MA
2019-01-24 339-220-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D BRYANTVL MA
2019-01-24 339-499-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2019-01-23 339-217-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2019-01-23 339-217-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2019-01-23 339-666-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D LYNN MA
2019-01-23 339-666-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D LYNN MA
2019-01-23 339-900-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D MARSHFIELD MA
2019-01-23 339-900-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D MARSHFIELD MA
2018-12-13 339-666-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LYNN 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.