| Date | IP Address |
| 2024-12-25 | 66.211.129.186 (ClassC) |
| Date | Domain | IP |
| exchange.chelmsford.k12.ma.us | 2024-12-05 | 50.202.69.4 |
| remote.chelmsford.k12.ma.us | 2024-12-05 | 66.211.129.183 |
| cpsexch.chelmsford.k12.ma.us | 2024-12-07 | 50.202.69.12 |
| cpsmail.chelmsford.k12.ma.us | 2024-12-10 | 66.211.129.187 |
| autodiscover.chelmsford.k12.ma.us | 2024-11-29 | 40.97.205.8 |
| cpsdc8.district.chelmsford.k12.ma.us | 2024-12-25 | 66.211.129.186 |
| hsportal.district.chelmsford.k12.ma.us | 2024-12-08 | 66.211.129.183 |
| www.chelmsford.k12.ma.us | 2024-11-29 | 162.159.135.42 |