// Domain Record: reference-security-db-2021
reference-security-db.edu
Defunct monitoring system originally established in 1996 to provide census information. Carried DA of 45 at peak.
// Current Metrics
38 Domain Authority
47 Domain Rating
40 Spam Score
41,989 Backlinks
5,776 Referring Domains
5y Domain Age
Backlink Profile
// Historical Trend Data
Authority Trend
| Year | DA | DR | Backlinks |
|---|---|---|---|
| 2021 | 33 | 43 | 38,825 |
| 2022 | 35 | 44 | 36,760 |
| 2023 | 35 | 45 | 54,268 |
| 2024 | 34 | 43 | 52,821 |
| 2025 | 34 | 44 | 39,269 |
// Related Domains in Expired Government Domains (2025)
| Domain | DA | DR | Backlinks |
|---|---|---|---|
| board-patent-review.io | 89 | 97 | 18,714 |
| dept-education-base.edu | 87 | 97 | 39,427 |
| library-safety-service.edu | 87 | 76 | 9,396 |
| central-treasury-net.gov | 86 | 97 | 33,255 |
| access-patent-service.us | 84 | 69 | 2,366 |