| SDS1 Modiin | SDS Data Service LTD | Modiin, Macabim- Reut | Israel | 7 | 0 |
| SDS3 Beit Yehoshua | SDS Data Service LTD | Beit Yehoshua | Israel | 2 | 1 |
| SDS4 Petch Tikva | SDS Data Service LTD | Petach Tikva | Israel | 0 | 0 |
| SEACOM Dar Es Salaam CLS | SEACOM Limited | Dar es Salaam | Tanzania | 10 | 0 |
| SEACOM Maputo CLS | SEACOM Limited | Maputo | Mozambique | 4 | 0 |
| SEACOM Mombasa CLS | SEACOM Limited | Mombasa | Kenya | 31 | 0 |
| SEACOM Mtunzini CLS | SEACOM Limited | Mtunzini | South Africa | 2 | 0 |
| Sebratel - São Leopoldo | Sebratel Tecnologia LTDA | São Leopoldo | Brazil | 1 | 0 |
| SECRELNET INFORMATICA | INSTALE TELECOM LTDA | Fortaleza | Brazil | 0 | 0 |
| SecrelNet Informática Fortaleza | SECRELNET INFORMATICA LTDA | Fortaleza | Brazil | 0 | 0 |
| Secure Data Center Bekkan | SECOM Trust Systems Co.,Ltd. | Mitaka | Japan | 0 | 0 |
| Secure Data Center Honkan | SECOM Trust Systems Co.,Ltd. | Mitaka | Japan | 1 | 0 |
| Secure Data Center Osaka | SECOM Trust Systems Co.,Ltd. | Osaka | Japan | 0 | 0 |
| Secure Data Center Shinkan | SECOM Trust Systems Co.,Ltd. | Mitaka | Japan | 0 | 0 |
| Secure Data Center TC4 | SECOM Trust Systems Co.,Ltd. | Mitaka | Japan | 0 | 0 |
| Secure Data Centre | Secure Data Centre | Darwin | Australia | 5 | 1 |
| Secure Shore Data Center | Bahamas Logistic Center Ltd. | Nassau | Bahamas | 2 | 0 |
| SecureData 365 | SecureData 365 | Canton | United States | 0 | 0 |
| SecureIT DCB1.1 | SecureIT S.A. | Bettembourg | Luxembourg | 0 | 0 |
| SecureIT DCB1.2 | SecureIT S.A. | Bettembourg | Luxembourg | 0 | 0 |
| SecureIT DCC | SecureIT S.A. | Luxembourg | Luxembourg | 2 | 0 |
| SecureIT DCR | SecureIT S.A. | Bissen | Luxembourg | 1 | 0 |
| SecureNet DC1 | SecureNet | South Charleston | United States | 1 | 1 |
| Seeweb FRO2 | Seeweb Srl | Frosinone | Italy | 4 | 0 |
| Seeweb Milano Caldera | Seeweb Srl | Milan | Italy | 59 | 4 |
| Segra Kannapolis | SEGRA | Kannapolis | United States | 1 | 0 |
| Sejong IX Center | Sejong Networks Co., Ltd. | Seoul | South Korea | 10 | 1 |
| Sejong Networks IDC | Sejong Networks Co., Ltd. | Yongin-si | South Korea | 1 | 0 |
| Senawave | Senawave | Salt Lake City | United States | 0 | 0 |
| senseLAN B20 | senseLAN GmbH | Düdingen | Switzerland | 2 | 0 |
| senseLAN D01 | senseLAN GmbH | Duedingen | Switzerland | 3 | 0 |
| Serbia BroadBand | Serbia BroadBand d.o.o. | Belgrade | Serbia | 4 | 1 |
| SerinIX Dnepropetrovsk (DK01) | SerinIX | Dnepropetrovsk | Ukraine | 1 | 0 |
| SerinIX Kiev (KV01) | SerinIX | Kyiv | Ukraine | 3 | 0 |
| SerinIX Kiev (KV02) | SerinIX | Kyiv | Ukraine | 2 | 0 |
| SerinIX Lvov (LV01) | SerinIX | Lvov | Ukraine | 4 | 0 |
| Serinya Telecom | Serinya Telecom | Eslettes | France | 0 | 0 |
| Servacus DC02 | Psittacus Systems LIMITED | Kettering | United Kingdom | 0 | 0 |
| Servanet FRG5 | Sundsvall Energi Elnat AB | Sundsvall | Sweden | 7 | 3 |
| Servecentric (Blanchardstown) | ServeCentric Ltd. (Blanchardstown) | Dublin | Ireland | 3 | 0 |
| Servercentralen DC02 | Nordiska Servercentralen AB | Solna | Sweden | 2 | 0 |
| ServerChoice SC-1 | ServerChoice Ltd | Stevenage | United Kingdom | 4 | 0 |
| ServerChoice SC-2 | ServerChoice Ltd | Welwyn Garden City | United Kingdom | 1 | 0 |
| ServerCondo-219 Albuquerque | IXNM, INC. | Albuquerque | United States | 0 | 0 |
| Servereasy DC1 | Servereasy | Settimo Milanese | Italy | 3 | 0 |
| Serverfarm AMS1 Amsterdam | Serverfarm | Amsterdam | Netherlands | 4 | 0 |
| Serverfarm ATL1 Atlanta | Serverfarm | Suwanee | United States | 2 | 1 |
| Serverfarm CH1 Chicago | Serverfarm | Chicago | United States | 5 | 2 |
| Serverfarm CH2 Oak Brook / Chicago | Serverfarm | Oak Brook | United States | 1 | 0 |
| Serverfarm LAX1 Los Angeles | Serverfarm | El Segundo | United States | 4 | 0 |