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 857
BANDWIDTH.COM CLEC, LLC - MA 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-08-20 857-788-8XXX 8000–8999Assigned SKYE TELECOM LLC DBA SKYETEL 622J BOSTON MA
2021-08-10 857-465-2XXX 2000–2999Assigned ADVANCED TELECOM SOLUTIONS, LLC 181J BOSTON MA
2021-08-04 857-355-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H EVERETT MA
2021-08-04 857-357-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CAMBRIDGE MA
2021-08-04 857-766-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SO BOSTON MA
2021-07-30 857-376-0XXX 0000–0999Assigned COMMIO, LLC 939H BROOKLINE MA
2021-07-30 857-376-2XXX 2000–2999Assigned COMMIO, LLC 939H BROOKLINE MA
2021-07-16 857-290-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-07-16 857-297-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-07-16 857-297-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-07-16 857-376-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2021-07-16 857-376-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2021-07-16 857-376-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2021-07-16 857-376-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2021-07-16 857-384-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-07-16 857-384-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-07-16 857-384-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-07-16 857-578-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-07-16 857-597-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D WINTHROP MA
2021-07-16 857-597-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D WINTHROP MA
2021-07-16 857-675-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2021-07-16 857-675-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2021-07-16 857-675-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2021-07-16 857-675-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2021-07-15 857-559-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-06-29 857-376-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-06-29 857-376-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-06-29 857-867-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-06-29 857-867-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-06-29 857-867-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-06-29 857-867-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-06-18 857-758-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-06-18 857-758-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-06-18 857-758-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-06-18 857-758-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-06-18 857-758-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-06-18 857-758-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-06-14 857-374-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D QUINCY MA
2021-06-14 857-374-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D QUINCY MA
2021-06-14 857-374-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D QUINCY MA
2021-06-14 857-374-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D QUINCY MA
2021-06-14 857-375-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-06-14 857-375-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-06-14 857-375-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-06-14 857-375-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-06-14 857-382-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-06-14 857-382-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-06-14 857-382-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-06-14 857-382-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-06-14 857-392-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D JAMAICA PL 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.