| Sentech | Sentech |  South Africa | — | — | — | OSM |
| Sentinel Ashburn - Building 1 | Sentinel Data Centers |  Sterling | — | — | — | OSM |
| Sentinel Ashburn - Building 2 | Sentinel Data Centers | Sterling | — | — | — | OSM |
| Sentinel Cloud Plaza | GI Partners | Sterling | — | — | — | OSM |
| Serinya Telecom | Serinya Telecom |  Eslettes | — | — | — | PeeringDB |
| Servacus DC02 | Psittacus Systems |  Kettering | — | — | — | PeeringDB |
| Server Room | — |  Kenya | — | — | — | OSM |
| Server Room B2 | — |  Malaysia | — | — | — | OSM |
| ServerCondo-219 Albuquerque | IXNM, INC. | Albuquerque | — | — | — | PeeringDB |
| Servergebäude | Universität Münster |  Germany | — | — | — | OSM |
| Servicio Televisión por Cable | — |  Viña del Mar | — | — | — | OSM |
| Servicios Informaticos Hostname | HN | Santiago | — | — | — | PeeringDB |
| Servidor | UNL |  Ecuador | — | — | — | OSM |
| Servpac Puahale DC | SERVPAC | Honolulu | — | — | — | PeeringDB |
| Set | — |  Dueville | — | — | — | OSM |
| Sferanet | Sferanet |  Rancharia | — | — | — | OSM |
| Shabdiz Telecom Network | Shabdiz Telecom Network |  Tehran | — | — | — | PeeringDB |
| Shakir Hage | AL-SAHIN AL-SHABALY Co |  Baghdad | — | — | — | PeeringDB |
| Sheen Telecom Consultants Private Limited | Sheen Telecom Consultants Private |  Srinagar | — | — | — | PeeringDB |
| Shelter ARSAT FO | — |  Argentina | — | — | — | OSM |
| Shelter Modernización | — | Argentina | — | — | — | OSM |
| Siemens EAGLE Data Center | Siemens Blog | Germany | — | — | — | OSM |
| Siemens EDA - HDC / Data Center | Siemens Digital Industries Software | Wilsonville | — | — | — | OSM |
| Sify Bareilly | Sify Technologies Limited | Bareilly | — | 1 | — | PeeringDB |
| Sify Infinit Spaces Limited - Mohali | Sify Technologies Limited | Mohali | — | — | — | PeeringDB |
| Sify Infinit Spaces Limited- Noida 02 | Sify Technologies Limited | Noida | — | 1 | — | PeeringDB |
| Sigma DC3 | Sigma | Carquefou | — | — | — | PeeringDB |
| Signal | — |  Norway | — | — | — | OSM |
| Signalhorn Leuk | Signalhorn |  Leuk Stadt | — | — | — | PeeringDB |
| Silica Networks - (TNS01) | Silica Networks | Las Toninas | — | — | — | PeeringDB |
| Simtronic | — |  Australia | — | — | — | OSM |
| Simtronic DC Jamisontown | Simtronic Technologies | Jamisontown | — | — | — | PeeringDB |
| Singtel Bedok Data Center | — |  Singapore | — | — | — | OSM |
| Singtel Kim Chuan Telecommunications Centre | — | Singapore | — | — | — | OSM |
| Singtel Kim Chuan Telecommunications Centre | — | Singapore | — | — | — | OSM |
| Sipartech Paris | www.sipartech.com | Paris | — | — | — | PeeringDB |
| Site Technique SFR | — | France | — | — | — | OSM |
| Site technique SFR | SFR | France | — | — | — | OSM |
| Site technique SFR | SFR | France | — | — | — | OSM |
| Site technique SFR | SFR | France | — | — | — | OSM |
| Six Degrees Data Centre | Six Degrees | United Kingdom | — | — | — | OSM |
| Six Degrees Data Centre | Six Degrees | United Kingdom | — | — | — | OSM |
| Siège de l'ARPCE | ARPCE |  Brazzaville | — | 1 | — | PeeringDB |
| Sky | Sky | London | — | — | — | OSM |
| Sky Chilworth | Sky UK | United Kingdom | — | — | — | OSM |
| Skybox Chicago I | Skybox Datacenters | Elk Grove Village | — | — | — | OSM |
| Smart Burundi | Lacell SU |  Bujumbura | — | — | — | PeeringDB |
| Smart City Telecom Maitland Colo | Smart City Telecom | Orlando | — | — | — | PeeringDB |
| Smartcom Telephone (MCAL2) | Smartcom Telephone | McAllen | — | — | — | PeeringDB |
| SoftBank | SoftBank |  Japan | — | — | — | OSM |
| SostraData | SostraData | France | — | — | — | OSM |
| South Lantau Submarine Cable Station | — |  Hong Kong | — | — | — | OSM |
| Southern Cross Cable Network Landing Station | Southern Cross Cable | Australia | — | — | — | OSM |
| Southern Highlands Data Campus | Cloud Carrier | Australia | — | — | — | OSM |
| Southwest Cyberport Albuquerque | Southwest Cyberport | | Albuquerque | — | — | — | PeeringDB |
| Soverign Data Centre - Metro Point | Sovereign Business Integration Group | Barnet | — | — | — | OSM |
| Spark Data Centre | Spark New Zealand |  Christchurch | — | — | — | OSM |
| Spark Data Centre | Spark | New Zealand | — | — | — | OSM |
| Spatioworld Tracker GPS | — | India | — | — | — | OSM |
| Spectrum Charlotte National Data Center | — | Charlotte | — | — | — | OSM |
| SpeedTravel Telecom | Speed Travel Comunicação Multimídia Ltda | Cacoal | — | — | — | PeeringDB |
| Sree Chithra Computer Centre | — | India | — | — | — | OSM |
| St.Dominic Monastery | Horyzont Technologie Internetowe sp.z.o.o. |  Poznan | — | 1 | — | PeeringDB |
| Stack | «M1Cloud» |  Moscow | — | — | — | PeeringDB |
| Stack Infrastructure | Stack Infrastructure | Beringen | — | — | — | OSM |
| Stack Infrastructure | STACK Infrastructure | Lithia Springs | — | — | — | OSM |
| Stack Infrastructure - POR01 | STACK Infrastructure | Hillsboro | — | — | — | OSM |
| Stack Infrastructure MEL01A | STACK Infrastructure | Australia | — | — | — | OSM |
| Stack Infrastructure MEL01B | STACK Infrastructure | Australia | — | — | — | OSM |
| Stack Infrastructure MEL01C | STACK Infrastructure | Australia | — | — | — | OSM |
| Stack Infrastructure MEL01D | STACK Infrastructure | Australia | — | — | — | OSM |
| Star of Bosphorus Veri Merkezi | NGN |  Tuzla | — | — | — | OSM |
| Stargate AI DataCenter | — |  UAE | — | — | — | OSM |
| Stargate UAE Abu Dhabi | — | UAE | — | — | — | OSM |
| Starhub Data Center @ Kaki Bukit | — | Singapore | — | — | — | OSM |
| Start Campus SIN02 | Start Campus |  Sines | — | — | 1 | PeeringDB |
| Starwood House | Tesco | United Kingdom | — | — | — | OSM |
| State of Montana Data Center | State of Montana | United States | — | — | — | OSM |
| Station d'atterrage | orange | France | — | — | — | OSM |
| Statistics Coordination Office, Jumla | — |  Nepal | — | — | — | OSM |
| Stonewall Creek Business Park | Google | Leesburg | — | — | — | OSM |
| Strand Exchange | Zazu Is Now MoreMax South Africa | Strand | — | — | — | PeeringDB |
| Strategic Datasphere | — | Alpharetta | — | — | — | OSM |
| Stream DFW IV | Stream Data Centers | Richardson | — | — | — | OSM |
| Stream Data Centers - Chicago I | Stream Data Centers | Elk Grove Village | — | — | — | PeeringDB |
| Stream Data Centers - Chicago II | Stream Data Centers | Elk Grove Village | — | — | 1 | PeeringDB |
| Stream Data Centers - DFW VII | Stream Data Centers | Garland | — | — | 1 | PeeringDB |
| Stream Networks - Newbury | Stream Networks | Newbury | — | — | — | PeeringDB |
| StrongMind | — | United States | — | — | — | OSM |
| Studio BETA SRLS | — | Porto San Giorgio | — | — | — | OSM |
| Studio Delta Srl | — | Italy | — | — | — | OSM |
| Sturgeon Data Centre | Meta |  Canada | — | — | — | OSM |
| Subisu Ltd. | Subisu | Kathmandu | — | — | — | PeeringDB |
| Subrigo LAX11 | Subrigo | Los Angeles | — | — | — | PeeringDB |
| Sudatel DC Khartoum | Sudatel Telecom Group |  Khartoum | — | — | — | PeeringDB |
| Summit Communications Limited | — |  Bangladesh | — | — | — | OSM |
| Sunday Network (Hong Kong) Ltd | Sunday Network (Hong Kong) Ltd. | Hong Kong | — | — | — | PeeringDB |
| Sungard Availability Services | — | United Kingdom | — | — | — | OSM |
| Sungard Systems International | — | United States | — | — | — | OSM |
| SunnyVision Data Center(SVDC) | SunnyVision | Hong Kong | — | — | — | PeeringDB |