Rank #3,500Updated November 10, 2026
obsidian.md
Obsidian - Sharpen your thinking
The site runs on Varnish, Cloudflare, Fastly and 2 other technologies. Its email security grade is D. Its SSL certificate is issued by Google Trust Services and is valid for 44 more days.
- Domain age
- —
- Technologies
- 5
- Email security
- D
- SSL days left
- 44
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 172.67.74.64 | 250 |
| A | 104.26.0.147 | 250 |
| A | 104.26.1.147 | 250 |
| MX | mxa.mailgun.org 10 | 300 |
| MX | mxb.mailgun.org 10 | 300 |
| NS | lloyd.ns.cloudflare.com | 86400 |
| NS | olga.ns.cloudflare.com | 86400 |
| CAA | issue 0 comodoca.com | 3600 |
| CAA | issue 0 digicert.com; cansignhttpexchanges=yes | 3600 |
| CAA | issue 0 letsencrypt.org | 3600 |
| CAA | issue 0 pki.goog; cansignhttpexchanges=yes | 3600 |
| CAA | issue 0 ssl.com | 3600 |
| CAA | issuewild 0 comodoca.com | 3600 |
| CAA | issuewild 0 digicert.com; cansignhttpexchanges=yes | 3600 |
| CAA | issuewild 0 letsencrypt.org | 3600 |
| CAA | issuewild 0 pki.goog; cansignhttpexchanges=yes | 3600 |
| CAA | issuewild 0 ssl.com | 3600 |
| TXT | google-site-verification=hCBjVyv5OggVQ11ZswCGdImnr0iYALxKZ5Iw4HxGOF8 | 300 |
| TXT | google-site-verification=jn725qQXnosMN1rvL3WIhBD21Q9dnlbIvSunvry0YUI | 300 |
| TXT | v=spf1 include:mailgun.org -all | 300 |
| AAAA | 2606:4700:20::681a:193 | 250 |
| AAAA | 2606:4700:20::ac43:4a40 | 250 |
| AAAA | 2606:4700:20::681a:93 | 250 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, WE1, Google Trust Services |
| Expires | December 24, 2026 |
| Days remaining | 44 |
| Protocol | TLSv1.3 |
| Names | obsidian.md, *.obsidian.md |
Email security
DScore 58/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnDMARC has no rua= address, so you receive no reports about mail sent as your domain.
- warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
- 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.
- good2 MX record(s) found. Mail is handled by Mailgun.
Homepage metadata
| Title | Obsidian - Sharpen your thinking |
|---|---|
| Description | The free and flexible app for your private thoughts. |
| Language | en |
| Indexable | Yes |
| Word count | 1120 |
About obsidian.md
What technology does obsidian.md use?
We detected 5 technologies on obsidian.md, including Varnish, Cloudflare, Fastly, HSTS, Tailwind CSS.
Does obsidian.md protect its email with SPF and DMARC?
obsidian.md scores 58/100 (grade D) for email security. DMARC has no rua= address, so you receive no reports about mail sent as your domain. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
What are the name servers of obsidian.md?
obsidian.md uses lloyd.ns.cloudflare.com, olga.ns.cloudflare.com.