NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 978-594

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 978-594 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
COMCAST IP PHONE, LLC 5
NEW CINGULAR WIRELESS PCS, LLC - DC 4
1
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 978-594-0XXX 0000–0999Reserved COMCAST IP PHONE, LLC 318J SALEM MA
— 978-594-1XXX 1000–1999Reserved COMCAST IP PHONE, LLC 318J SALEM MA
2016-06-09 978-594-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
2014-10-16 978-594-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
— 978-594-4XXX 4000–4999Reserved COMCAST IP PHONE, LLC 318J SALEM MA
— 978-594-5XXX 5000–5999Reserved COMCAST IP PHONE, LLC 318J SALEM MA
2016-06-09 978-594-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
2014-10-16 978-594-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
2007-03-30 978-594-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SALEM MA
— 978-594-9XXX 9000–9999Available SALEM 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.