NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 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, 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
2021-01-26 339-500-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D LYNN MA
2021-01-26 339-500-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D LYNN MA
2021-01-26 339-500-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D LYNN MA
2021-01-26 339-500-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D LYNN MA
2021-01-25 339-212-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H MARBLEHEAD MA
2021-01-25 339-532-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H REVERE MA
2020-12-16 339-532-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H REVERE MA
2020-12-08 339-255-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2020-12-08 339-255-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2020-12-08 339-255-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2020-12-08 339-255-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2020-11-12 339-240-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BURLINGTON MA
2020-11-12 339-240-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BURLINGTON MA
2020-11-12 339-240-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BURLINGTON MA
2020-09-29 339-229-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WEYMOUTH MA
2020-09-28 339-220-6XXX 6000–6999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BRYANTVL MA
2020-09-28 339-338-1XXX 1000–1999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F LYNN MA
2020-07-22 339-230-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D SHARON MA
2020-07-22 339-356-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D HULL MA
2020-07-22 339-356-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D HULL MA
2020-07-22 339-529-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D WHITMAN MA
2020-07-22 339-529-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D WHITMAN MA
2020-07-22 339-600-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D SAUGUS MA
2020-06-24 339-212-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MARBLEHEAD MA
2020-06-24 339-212-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MARBLEHEAD MA
2020-06-17 339-331-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2020-06-17 339-331-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2020-06-11 339-229-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2020-06-11 339-229-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D WEYMOUTH MA
2020-06-11 339-338-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D LYNN MA
2020-06-11 339-338-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D LYNN MA
2020-06-11 339-338-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D LYNN MA
2020-06-10 339-212-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D MARBLEHEAD MA
2020-06-10 339-212-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D MARBLEHEAD MA
2020-06-10 339-220-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BRYANTVL MA
2020-06-10 339-220-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BRYANTVL MA
2020-06-01 339-229-4XXX 4000–4999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F WEYMOUTH MA
2020-05-11 339-218-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D HANOVER MA
2020-05-11 339-218-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D HANOVER MA
2020-05-11 339-218-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HANOVER MA
2020-05-11 339-218-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D HANOVER MA
2020-05-11 339-300-0XXX 0000–0999Assigned FRACTEL, LLC 965H COHASSET MA
2020-05-11 339-300-3XXX 3000–3999Assigned FRACTEL, LLC 965H COHASSET MA
2020-05-11 339-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H HULL MA
2020-05-11 339-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H HULL MA
2020-05-11 339-400-0XXX 0000–0999Assigned FRACTEL, LLC 965H SAUGUS MA
2020-05-11 339-400-4XXX 4000–4999Assigned FRACTEL, LLC 965H SAUGUS MA
2020-05-11 339-529-3XXX 3000–3999Assigned FRACTEL, LLC 965H WHITMAN MA
2020-05-11 339-529-9XXX 9000–9999Assigned FRACTEL, LLC 965H WHITMAN MA
2020-04-28 339-213-7XXX 7000–7999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F DEDHAM MA

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.