NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 978-800

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 978-800 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 978 blocks

Most active assignees, all time — NPA 978
ONVOY, LLC - MA 5
LEVEL 3 COMMUNICATIONS, LLC - MA 3
2
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 978-800-0XXX 0000–0999Reserved LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LITTLETON MA
2005-02-02 978-800-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LITTLETON MA
2022-09-07 978-800-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D LITTLETON MA
2009-11-18 978-800-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D LITTLETON MA
2002-10-01 978-800-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LITTLETON MA
— 978-800-5XXX 5000–5999Available LITTLETON MA
2022-09-07 978-800-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D LITTLETON MA
2022-09-07 978-800-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D LITTLETON MA
2017-09-08 978-800-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D LITTLETON MA
— 978-800-9XXX 9000–9999Available LITTLETON 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.