| LRZ SuperMUC-NG | Bavarian Academy of Sciences and Humanities | Operating | — | — |
| Level (3) Le Capitole Nanterre | — | Operating | — | — |
| Level 3 Communications Herndon Gateway mNSR Fairfax County County | — | Operating | VA | — |
| Liberty Center One Oakland County | — | Operating | MI | — |
| LightEdge Austin I Travis County | — | Operating | TX | — |
| LightEdge Austin II Travis County | — | Operating | TX | — |
| LightEdge SAN1 San Diego County | — | Operating | CA | — |
| Lightedge Des Moines 1 Polk County | — | Operating | IA | — |
| Lightedge Des Moines 2 Polk County | — | Operating | IA | — |
| Lille Etix #1 | — | Operating | — | — |
| Lincoln Rackhouse DuPage County | — | Operating | IL | — |
| Liquid Web, Inc Eaton County | — | Operating | MI | — |
| Lumen Baltimore Baltimore County | Lumen Technologies, Inc. | Operating | MD | — |
| Lumen Dallas - 3180 Irving Blvd. Dallas County | Lumen Technologies, Inc. | Operating | TX | — |
| Lumen McLean Fairfax County | Lumen Technologies, Inc. | Operating | VA | — |
| Lumen Richmond 2 Henrico County | Level3 Communications | Operating | VA | — |
| Lumen Sunnyvale 1 Santa Clara County | Lumen Technologies, Inc. | Operating | CA | — |
| Lunar 1&2 | Equinix, Inc. | Operating | — | — |
| MECP1 Ashburn 2, LLC mNSR Loudoun County County | — | Operating | VA | — |
| Microsoft Corporation – Leesburg Data Center (iad01-02-03-04-05) Loudoun County | — | Operating | VA | — |
| MK Netzdienste GmbH FRA2 | MK Netzdienste GmbH | Operating | — | — |
| Mt2 | Equinix, Inc. | Operating | — | — |
| Maincubes AMS01 | maincubes | Operating | — | — |
| Markley Data Center Middlesex County | — | Operating | MA | — |
| Meta Kansas City (Golden Plains) Platte County County | Facebook USA, Inc. | Operating | MO | — |
| Microsoft Loudoun County | Microsoft Corporation | Operating | VA | — |
| Microsoft IAD11 Loudoun County | Microsoft Corporation | Operating | VA | — |
| NEXTDC - S1 Sydney | NEXTDC | Operating | — | — |
| NEXTDC - S2 Sydney | NEXTDC | Operating | — | — |
| NEXTDC - S3 Sidney | NEXTDC | Operating | — | — |
| NEXTDC Darwin D1 | NEXTDC | Operating | — | — |
| NEXTDC M3 Melbourne Data Centre | NEXTDC | Operating | — | — |
| NIKHEF Amsterdam | NIKHEF | Operating | — | — |
| NTT | NTT Global Data Centers | Operating | — | — |
| NTT Amsterdam 1 Data Center | NTT Global Data Centers | Operating | — | — |
| NTT Ashburn VA1 Data Center Loudoun County | NTT Global Data Centers | Operating | VA | — |
| NTT Communications Singapore Serangoon Data Center | — | Operating | — | — |
| NTT Global Data Centers | NTT Global Data Centers | Operating | — | — |
| NTT Global Data Centers Americas, Inc. mNSR Loudoun County County | NTT Global Data Centers | Operating | VA | — |
| NTT Global Data Centers EMEA GmbH | NTT Global Data Centers | Operating | — | — |
| NTT Global Datacenters Frankfurt 4 | NTT Global Data Centers | Operating | — | — |
| NTT Mumbai 7 Data Center | Equinix, Inc. | Operating | — | — |
| NTT RagingWire DC - Hillsboro Washington County | NTT Global Data Centers | Operating | OR | — |
| NTT Slough | NTT Global Data Centers | Operating | — | — |
| NTT Zurich 1 Data Center | NTT Global Data Centers | Operating | — | — |
| NWI Telecom | — | Operating | — | — |
| Nautilus Data Technology San Joaquin County | — | Operating | CA | — |
| Nepustil RZ4 | — | Operating | — | — |
| Netrality Cook County | — | Operating | IL | — |
| Netrality Data Centers Jackson County | Prime Data Centers | Operating | MO | — |
| Netwise | — | Operating | — | — |
| New Dominion Technology Park LLC mNSR Fairfax County County | — | Operating | VA | — |
| Nexeren | Nexeren | Operating | — | — |
| NextDC | NEXTDC | Operating | — | — |
| NextDC A1 | NEXTDC | Operating | — | — |
| NextDC M1 Melbourne Data Centre | NEXTDC | Operating | — | — |
| NextDC P2 Perth Data Centre | NEXTDC | Operating | — | — |
| Nexus Datacenter | VUB;UZ Brussel | Operating | — | — |
| NorthC AMS-02 | NorthC | Operating | — | — |
| NorthC Berlin 2 | NorthC | Operating | — | — |
| NorthC Biel data center | NorthC | Operating | — | — |
| NorthC Data center Groningen | NorthC | Operating | — | — |
| NorthC Datacenter Aalsmeer | NorthC | Operating | — | — |
| NorthC Datacenter Delft | NorthC | Operating | — | — |
| NorthC Datacenter Eindhoven | NorthC | Operating | — | — |
| NorthC Datacenter Eindhoven 2 | NorthC | Operating | — | — |
| NorthC Datacenter Oude Meer | NorthC | Operating | — | — |
| NorthC Datacenter Rotterdam Waalhaven | NorthC | Operating | — | — |
| NorthC Datacenters Amsterdam | NorthC | Operating | — | — |
| NorthC Düsseldorf 1 | NorthC | Operating | — | — |
| NorthC Frankfurt 3 | NorthC | Operating | — | — |
| NorthC Hamburg 1 | NorthC | Operating | — | — |
| NorthC München 1 | NorthC | Operating | — | — |
| NorthC München 2 | NorthC | Operating | — | — |
| NorthC Nieuwegein | NorthC | Operating | — | — |
| NorthC Nürnberg 1 | NorthC | Operating | — | — |
| NorthC Rotterdam Zestienhoven 1&2 | NorthC | Operating | — | — |
| Northrop Grumman Systems Corporation mNSR Russell County County | — | Operating | VA | — |
| Nova Mango Farms LLC mNSR Prince William County County | — | Operating | VA | — |
| Nüday Networks | — | Operating | — | — |
| OADC Isando | Open Access Data Centres | Operating | — | — |
| Ocosa Tulsa County | — | Operating | OK | — |
| Odata DC Rj01 | ODATA | Operating | — | — |
| Opcore Dc2 | Scaleway | Operating | — | — |
| Opcore Dc3 | Scaleway | Operating | — | — |
| Opcore Dc5 | Scaleway | Operating | — | — |
| Oracle-Austin Data Center Travis County | Oracle Corporation | Operating | TX | — |
| Oath, Inc. mNSR Prince William County County | — | Operating | VA | — |
| Oficina KIO Interlomas y centro de datos KIO MEX4 | KIO Networks | Operating | — | — |
| Omega Systems Reading Data Center Berks County | Omega | Operating | PA | — |
| Omnis Network Maricopa County | — | Operating | AZ | — |
| One Wilshire Los Angeles County | CoreSite, LLC | Operating | CA | — |
| OpenColo Santa Clara County | — | Operating | CA | — |
| Options Technology Ltd. | Options Technology Ltd. | Operating | — | — |
| Optus Data Centre | — | Operating | — | — |
| Oso Grande Bernalillo County | — | Operating | NM | — |
| Pilot JOHNSON County | — | Operating | KS | — |
| Poolin Tarbush Taproot REEVES COUNTY County | — | Operating | TX | — |
| Project Quest JONES COUNTY County | — | Operating | TX | — |
| PWC Lithia Springs Douglas County | PricewaterhouseCoopers | Operating | GA | — |