NumberResearchThousands-blocks in 916-218
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 916-218 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 |
|---|---|---|---|---|---|---|---|
| 2012-06-21 | 916-218-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | RSVL MAIN | CA |
| — | 916-218-1XXX | 1000–1999 | Reserved | PACIFIC BELL (COMPETITIVE) | 7480 | RSVL MAIN | CA |
| 2004-08-23 | 916-218-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| — | 916-218-3XXX | 3000–3999 | Reserved | PACIFIC BELL (COMPETITIVE) | 7480 | RSVL MAIN | CA |
| 2003-10-16 | 916-218-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | RSVL MAIN | CA |
| 2004-12-13 | 916-218-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2004-01-16 | 916-218-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL MAIN | CA |
| 2004-01-16 | 916-218-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL MAIN | CA |
| 2005-02-23 | 916-218-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2005-09-06 | 916-218-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | 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.