ctan.org
CTAN: Comprehensive TeX Archive Network
ctan.org is registered with DNC Holdings, Inc. since March 11, 1998 (28.7 years). The registration expires on March 10, 2029. The site runs on Java, HSTS, Apache HTTP Server. Its email security grade is F. Its SSL certificate is issued by Let's Encrypt and is valid for 84 more days.
- Domain age
- 28.7 yrs
- Technologies
- 3
- Email security
- F
- SSL days left
- 84
Registration
| Registrar | DNC Holdings, Inc. |
|---|---|
| IANA ID | 291 |
| Registered | March 11, 1998 |
| Expires | March 10, 2029 |
| Updated | August 12, 2026 |
| Status | client delete prohibited, client transfer prohibited, client update prohibited |
| Name servers | ns1.tug.org, ns2.tug.org, tragedy.dante.de |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 202.61.224.132 | 8849 |
| MX | irony.dante.de 10 | 14400 |
| NS | ns2.tug.org | 14400 |
| NS | tragedy.dante.de | 14400 |
| NS | ns1.tug.org | 14400 |
| TXT | google-site-verification=9S_RyjfPcn9W3kYwDDrU7BswRhDytfyD4R_736raDso | 14400 |
| TXT | v=spf1 mx ~all | 14400 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE2, Let's Encrypt |
| Expires | February 2, 2027 |
| Days remaining | 84 |
| Protocol | TLSv1.3 |
| Names | *.ctan.org, ctan.org |
Email security
- warnDMARC policy is none (monitoring only). Spoofed mail is still delivered.
- 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 marked as suspicious (soft fail).
- good1 MX record(s) found.
Homepage metadata
| Title | CTAN: Comprehensive TeX Archive Network |
|---|---|
| Language | en |
| Indexable | Yes |
| Word count | 648 |
About ctan.org
Who is the registrar of ctan.org?
ctan.org is registered with DNC Holdings, Inc. (IANA ID 291).
When does ctan.org expire?
The current registration of ctan.org expires on March 10, 2029. It was first registered on March 11, 1998.
What technology does ctan.org use?
We detected 3 technologies on ctan.org, including Java, HSTS, Apache HTTP Server.
Does ctan.org protect its email with SPF and DMARC?
ctan.org scores 42/100 (grade F) for email security. DMARC policy is none (monitoring only). Spoofed mail is still delivered. DMARC has no rua= address, so you receive no reports about mail sent as your domain.
What are the name servers of ctan.org?
ctan.org uses ns2.tug.org, tragedy.dante.de, ns1.tug.org.