legend: Domestic International
| 1987.01 | Packet Switching (X.25) Network Service |
|---|---|
| 1989.01 | Connection with US(NSF) |
| 1990.02 | Connection with UK(British Library) |
| 1990.04 | International E-Mail Service(CSNET/BITNET) |
| 1990.10 | Access Point Service |
| 1992.04 | SINET: Internet Backbone Network Service |
| 1993.03 | Dedicated Line to US (512k) |
| 1994.09 | ATM Switched Network Service |
| 1995.09 | Dedicated Line to Thailand (2M) |
| 1996.11 | Dedicated Line to UK (2M) |
| 1998.09 | Commerce interconnection open |
| 2002.01 | Super-SINET operation start |
| 2002.03 | Packet Switching Network Service close |
| 2002.09 | IPv6 Service open |
| 2002.09 | ATM Switched Network Service close |
| 2003.01 | Dedicated Line to UK (150M) close |
| 2006.01 | Dedicated Line to Singapore (622M) Dedicated Line to Hong Kong (622M) |
| 2006.03 | Dedicated Line to Thailand (44M) close |
| 2007.04 | SINET3 operation start |
| 2007.04 | Dedicated Line to US speed upgrade (20G) Dedicated Line to Asia speed upgrade (2.4G) |
| 2011.04 | SINET4 operation start |
| 2013.04 | Dedicated Line to Asia speed upgrade (10G) |
| 2016.03 | Dedicated Line to US speed upgrade (100G) Dedicated Line to Europe (20G) Dedicated Line to Asia (10G) |
| 2016.04 | SINET5 operation start |