However, I can guide you on how to find cutoff marks or previous years' results for reference.

1. Official Website:
The first and most reliable source to find cutoff marks or previous years' results is the official website of the exam conducting authority. In this case, you can visit the official website of the Delhi Subordinate Services Selection Board (DSSSB) to look for the desired information. The official website usually provides comprehensive information about the exams, including cutoff marks and previous years' results.

2. Exam Preparation Platforms:
There are several exam preparation platforms, such as EduRev, that provide study materials, mock tests, and other resources for various competitive exams. These platforms often compile cutoff marks and previous years' results to help aspirants gauge their performance and set realistic goals. You can search for DSSSB TGT/PGT/PRT-specific materials on such platforms.

3. Online Forums and Communities:
Online forums and communities dedicated to competitive exams can also be a valuable source of information. Many aspirants share their experiences, cutoff marks, and previous years' results on these platforms. You can join relevant groups or forums and ask for the information you are looking for. However, always verify the credibility of the information before relying on it.

4. Social Media Groups:
Social media platforms, especially Facebook and Telegram, host numerous groups dedicated to competitive exams. These groups often provide updates, study materials, and discussions related to the exams. You can join DSSSB TGT/PGT/PRT-specific groups and ask fellow aspirants for cutoff marks or previous years' results.

5. Coaching Institutes:
Coaching institutes that offer preparation classes for DSSSB exams might also have information regarding cutoff marks and previous years' results. They usually keep track of such information to guide their students effectively. You can reach out to coaching institutes that specialize in DSSSB exams and inquire about the desired information.

Remember to cross-check the information from multiple sources and ensure its authenticity before using it for reference. It's also beneficial to refer to recent years' cutoff marks and results as they may be more relevant.