NTT Phoenix PH4

Proposed data center in 10256 Elliot Rd, Bldg 4, Mesa. Operated by NTT.

This is a proposed or under-construction project. It is not operating capacity, and announced projects do sometimes change scope or fail to proceed.

• Capacity: 36 MW
• Expected: 2026

Capacity: Operator's own figure: computing (IT) load. NTT.

Working here

Per-facility headcount is not published here: no reliable public figures exist for these sites, and construction announcements are not permanent employment. Open Arizona roles at this operator, where there are any, are listed on the operator's company page.

Rest of this campus

• NTT Phoenix PH1
  NTT · 10256 E Elliot Rd, Mesa · Operating · 36 MW
• NTT Phoenix PH2
  NTT · 10256 E Elliot Rd, Mesa · Operating · 50 MW · 235,550 sq ft
• NTT Phoenix PH3
  NTT · 10256 E Elliot Rd, Mesa · Operating · 50 MW · 235,550 sq ft
• NTT Phoenix PH5
  NTT · Mesa · Proposed
• NTT Phoenix PH6
  NTT · Mesa · Proposed · 195,408 sq ft

Other NTT facilities in Arizona

• NTT Mesa PH10 (Pacific Proving site)
  NTT · Pecos Road and the Crismon Road alignment, Mesa · Proposed · 2.3M sq ft

News

Stories in Arizona AI's news feed that name this facility, newest first.

• May 17, 2026
  Japanese company s East Valley data center campus moves forward
  NTT Data Group acquired 173 acres in Mesa for a planned $300 million data center project, advancing development of the campus.
• May 17, 2026
  Japanese company's East Valley data center campus moves forward
  NTT Data Group Corp. has acquired 173 acres in Mesa for its $300 million data center project, allowing the massive development to move forward.

All Arizona AI news

How we know this

Compiled from public records and checked on 2026-10-07. Confidence in this record: high. Blank figures mean the number is not publicly established, not that it is zero.

Each statement on this page is listed with the page it came from and the words that say it. Sources open in a new tab.

• Status: Proposed

  Note: NTT's page said it will be available in July 2026. One listing site says it has been commissioned.

  • [1] NTT DATA, Phoenix PH4 Data Center | NTT DATA (read October 7, 2026): Phoenix PH4 will be available in July 2026.
  • [2] Cleanview, Data Centers in Arizona - Project List & Locations (read October 7, 2026): Map record 1027: NTT Phoenix PH4 | status Planned

• Capacity: 36 MW

  • [1] NTT DATA, Phoenix PH4 Data Center | NTT DATA (read October 7, 2026): Our PH4 data center offers 36MW of critical IT load and 127,000 sqft of IT space, on our 240MW campus.

• Expected: 2026

  • [1] NTT DATA, Phoenix PH4 Data Center | NTT DATA (read October 7, 2026): Phoenix PH4 will be available in July 2026.

• Location: 10256 Elliot Rd, Bldg 4, Mesa

  • [1] NTT DATA, Phoenix PH4 Data Center | NTT DATA (read October 7, 2026): 10256 Elliot Rd., Bldg 4 Mesa, AZ 85212

• NTT's page says PH4 will be available in July 2026 and was still in the future tense in October 2026.

  • [1] NTT DATA, Phoenix PH4 Data Center | NTT DATA (read October 7, 2026): Phoenix PH4 will be available in July 2026.

• One listing site says it has been commissioned and another lists it as planned.

  • [3] datacenterHawk, NTT Global Data Centers PH4 | E Elliot Road and S Signal Butte Road, Phoenix - datacenterHawk (read October 7, 2026): Commissioned This facility has been commissioned.
  • [2] Cleanview, Data Centers in Arizona - Project List & Locations (read October 7, 2026): Map record 1027: NTT Phoenix PH4 | status Planned