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| Host | Type | Class | TTL | Target |
| optosystems.com.sg | SOA | IN | 21600 | |
| optosystems.com.sg | NS | IN | 21600 | ns137.sgcloudhosting.cloud |
| optosystems.com.sg | NS | IN | 21600 | ns138.sgcloudhosting.cloud |
| optosystems.com.sg | A | IN | 21600 | |
| optosystems.com.sg | MX | IN | 21600 | alt1.aspmx.l.google.com |
| optosystems.com.sg | MX | IN | 21600 | aspmx2.googlemail.com |
| optosystems.com.sg | MX | IN | 21600 | aspmx.l.google.com |
| optosystems.com.sg | MX | IN | 21600 | aspmx3.googlemail.com |
| optosystems.com.sg | MX | IN | 21600 | alt2.aspmx.l.google.com |
| optosystems.com.sg | TXT | IN | 21600 |