NumberResearchThousands-blocks in 916-242
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 916-242 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 916 blocks
Most active assignees, all time — NPA 916
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-08-18 | 916-242-0XXX | 0000–0999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | RSVL CTHT | CA |
| — | 916-242-1XXX | 1000–1999 | Reserved | IP HORIZON LLC | 515J | RSVL CTHT | CA |
| — | 916-242-2XXX | 2000–2999 | Reserved | IP HORIZON LLC | 515J | RSVL CTHT | CA |
| 2010-06-09 | 916-242-3XXX | 3000–3999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 3964 | RSVL CTHT | CA |
| — | 916-242-4XXX | 4000–4999 | Reserved | IP HORIZON LLC | 515J | RSVL CTHT | CA |
| 2012-08-27 | 916-242-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | RSVL CTHT | CA |
| 2005-09-12 | 916-242-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | RSVL CTHT | CA |
| 2005-11-16 | 916-242-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-11-16 | 916-242-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-11-16 | 916-242-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
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.