Websites hosted on PHS (AS40831)
<0.01%
resolve to a PHS (AS40831) network
57 of 28.58 million domains with an A record, DNS sweep of Sep 2026
High-authority sites
Ordered by Open Page Rank, the domain's authority score from the open web link graph.
| # | Website | OPROpen Page Rank |
|---|---|---|
| 1 | massgeneral.org | 8.21 |
| 2 | brighamandwomens.org | 7.82 |
| 3 | masseyeandear.org | 6.60 |
| 4 | spauldingrehab.org | 5.76 |
| 5 | martinos.org | 5.33 |
| 6 | protomag.com | 4.70 |
| 7 | brighamandwomensfaulkner.org | 4.51 |
| 8 | aedpregnancyregistry.org | 4.14 |
| 9 | sleepdata.org | 4.10 |
| 10 | cistrome.org | 4.03 |
| 11 | ardsnet.org | 3.98 |
| 12 | gten.travel | 3.41 |
| 13 | reprievetrial.org | 3.35 |
| 14 | freesurfer.net | 3.32 |
| 15 | mghpcs.org | 3.27 |
| 16 | ampscz.org | 3.24 |
| 17 | allwayshealthpartners.org | 3.18 |
| 18 | faustmanlab.org | 3.09 |
| 19 | mgb.org | 3.03 |
See all hosting and how they are measured.