Rank #1,991Updated November 10, 2026
osf.io
OSF
The site runs on HSTS. Its email security grade is C. Its SSL certificate is issued by Let's Encrypt and is valid for 65 more days.
- Domain age
- —
- Technologies
- 1
- Email security
- C
- SSL days left
- 65
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 129.80.230.64 | 299 |
| MX | mxa.mailgun.org 10 | 86400 |
| MX | mxb.mailgun.org 10 | 86400 |
| NS | ns-cloud-e2.googledomains.com | 3600 |
| NS | ns-cloud-e4.googledomains.com | 3600 |
| NS | ns-cloud-e3.googledomains.com | 3600 |
| NS | ns-cloud-e1.googledomains.com | 3600 |
| TXT | v=spf1 include:servers.mcsv.net include:mailgun.org include:spf.mandrillapp.com include:helpscoutemail.com -all | 300 |
| TXT | google-site-verification=Os5fN6UEEXdyTWtMShjt2La-9Ei168BdYPXejjtfuIo | 300 |
Technology stack
Security
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR2, Let's Encrypt |
| Expires | January 14, 2027 |
| Days remaining | 65 |
| Protocol | TLSv1.3 |
| Names | osf.arizona.edu, osf.asu.edu, osf.fsu.edu, osf.io, osf.jmu.edu, osf.library.cmu.edu, osf.mq.edu.au, osf.nd.edu, osf.nyu.edu, osf.openscience.ubc.ca, osf.research.vcu.edu, osf.uc.edu |
Email security
CScore 76/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnSPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it.
- warnDKIM key found (selector: k1, mandrill) but it is only 1024 bits; 2048 is recommended.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
- goodDMARC aggregate reports are sent to mailto:[email protected], mailto:[email protected].
- good2 MX record(s) found. Mail is handled by Mailgun.
Homepage metadata
| Title | OSF |
|---|---|
| Language | en |
| Indexable | Yes |
| Word count | 0 |
About osf.io
What technology does osf.io use?
We detected 1 technologies on osf.io, including HSTS.
Does osf.io protect its email with SPF and DMARC?
osf.io scores 76/100 (grade C) for email security. SPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it. DKIM key found (selector: k1, mandrill) but it is only 1024 bits; 2048 is recommended.
What are the name servers of osf.io?
osf.io uses ns-cloud-e2.googledomains.com, ns-cloud-e4.googledomains.com, ns-cloud-e3.googledomains.com, ns-cloud-e1.googledomains.com.