graphviz.org
Graphviz
graphviz.org is registered with CSL Computer Service Langenbach GmbH d/b/a joker.com since June 17, 1999 (27.4 years). The registration expires on June 17, 2030. The site runs on unpkg, Font Awesome, jQuery and 1 other technologies. Its email security grade is F. Its SSL certificate is issued by Let's Encrypt and is valid for 58 more days.
- Domain age
- 27.4 yrs
- Technologies
- 4
- Email security
- F
- SSL days left
- 58
Registration
| Registrar | CSL Computer Service Langenbach GmbH d/b/a joker.com |
|---|---|
| IANA ID | 113 |
| Registered | June 17, 1999 |
| Expires | June 17, 2030 |
| Updated | August 12, 2026 |
| Status | client transfer prohibited |
| Name servers | dana.ns.cloudflare.com, kanye.ns.cloudflare.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 35.185.44.232 | 300 |
| MX | mail.taco.com 10 | 300 |
| NS | dana.ns.cloudflare.com | 86400 |
| NS | kanye.ns.cloudflare.com | 86400 |
| TXT | google-site-verification=9xaZ5Wjxusn8mYYFLw5zG570kcg18aYSiRb4VLp3qkI | 300 |
| TXT | v=spf1 +a +mx -all | 300 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR2, Let's Encrypt |
| Expires | January 7, 2027 |
| Days remaining | 58 |
| Protocol | TLSv1.3 |
| Names | graphviz.org |
Email security
- badNo DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends 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).
- good1 MX record(s) found.
Homepage metadata
| Title | Graphviz |
|---|---|
| Description | Please join the Graphviz forum to ask questions and discuss Graphviz. What is Graphviz? Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design, machine learning, and in visual interfaces for other technical domains. |
| Language | en |
| Canonical | https://graphviz.org/ |
| Indexable | Yes |
| Word count | 589 |
About graphviz.org
Who is the registrar of graphviz.org?
graphviz.org is registered with CSL Computer Service Langenbach GmbH d/b/a joker.com (IANA ID 113).
When does graphviz.org expire?
The current registration of graphviz.org expires on June 17, 2030. It was first registered on June 17, 1999.
What technology does graphviz.org use?
We detected 4 technologies on graphviz.org, including unpkg, Font Awesome, jQuery, Hugo.
Does graphviz.org protect its email with SPF and DMARC?
graphviz.org scores 30/100 (grade F) for email security. No DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends 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 graphviz.org?
graphviz.org uses dana.ns.cloudflare.com, kanye.ns.cloudflare.com.