Open Authority Rating
stratigraphy.org
52/100
- Harmonic centrality rank
- #8,659
- PageRank rank
- #7,338
- Crawled hosts
- 16
- Crawl release
- cc-main-2026-aug-sep-oct
- Last computed
- Nov 11, 2026
Stronger than 99.99% of the 134,979,706 ranked domains (by harmonic centrality).
What 52 means
Top 0.01% of the web graph. Among the most linked-to domains on the web: global brands, platforms and major publishers.
Whether that is good depends on the sites you compete with. What counts as a good score · Compare with a competitor
What drives this score
OAR 52 adds up two positions in the cc-main-2026-aug-sep-oct link graph: harmonic centrality, worth up to 70 points, and PageRank, worth up to 30.
- Harmonic centrality rank #8,65936.1 of 70 points
- PageRank rank #7,33815.7 of 30 points
Both signals sit at about the same position, so neither is holding stratigraphy.org back more than the other.
Rank needed for a higher score
| OAR | Harmonic centrality rank (PageRank unchanged) | PageRank rank (harmonic centrality unchanged) |
|---|---|---|
| 53 | #7,249 or better | #4,847 or better |
| 57 | #2,487 or better | #399 or better |
| 62 | #653 or better | #17 or better |
Ranks are relative to each release, so a score can also move because the web around stratigraphy.org changed. OAR describes position in the public link graph; it does not predict search rankings or traffic. How OAR is computed
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About this domain
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OAR across crawl releases
| Crawl release | OAR |
|---|---|
| cc-main-2026-apr-may-jun | 43 |
| cc-main-2026-may-jun-jul | 32 |
| cc-main-2026-jun-jul-aug | 50 |
| cc-main-2026-jul-aug-sep | 53 |
| cc-main-2026-aug-sep-oct | 52 |
Dashed marks are crawl releases where stratigraphy.org wasn’t in the link graph; gaps are shown honestly, never interpolated. How to read this chart
Compare stratigraphy.org with another domain
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