Rank #4,985Updated November 10, 2026
4.cn
4.CN - Buy, Sell & Park Domain Names
The site runs on Universal Analytics, jQuery, PHP and 1 other technologies. Its email security grade is F. Its SSL certificate is issued by Let's Encrypt and is valid for 55 more days.
- Domain age
- —
- Technologies
- 4
- Email security
- F
- SSL days left
- 55
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 69.234.239.50 | 1 |
| MX | mail.tutanota.de 10 | 600 |
| NS | vip3.alidns.com | 86400 |
| NS | vip4.alidns.com | 86400 |
| TXT | google-site-verification=pVWTtlccvil-QpeXyjIxnTgjkilaa5ohh4uyueBGEKM | 600 |
| TXT | v=spf1 include:spf.tutanota.de -all | 600 |
| TXT | t-verify=89ffdcb4e2e1d153eb5e018a03d3a8a9 | 600 |
| TXT | v=spf1 include:mailgun.org ~all | 600 |
| TXT | v=spf1 include:spf1.dm.aliyun.com -all | 600 |
Technology stack
Analytics and advertising IDs
google_analytics:UA-101238353-1SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR2, Let's Encrypt |
| Expires | January 4, 2027 |
| Days remaining | 55 |
| Protocol | TLSv1.2 |
| Names | *.4.cn, 4.cn |
Email security
FScore 28/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- badMore than one SPF record was found. Receivers treat this as an error, so SPF fails for all mail.
- badMore than one DMARC record was found, so receivers ignore DMARC entirely.
- 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).
- goodDKIM keys found (selector: s1, s2).
- good1 MX record(s) found.
- goodMTA-STS is enforced: other servers must use verified TLS when sending you mail.
Homepage metadata
| Title | 4.CN - Buy, Sell & Park Domain Names |
|---|---|
| Description | 4.CN is the global and professional marketplace for buying and selling domain names. We have over 1.500.000 domains in our marketplace. Currently we are the leading domain auction platform and domain escrow service provider in China now. |
| Language | en |
| Indexable | Yes |
| Word count | 512 |
About 4.cn
What technology does 4.cn use?
We detected 4 technologies on 4.cn, including Universal Analytics, jQuery, PHP, Nginx.
Does 4.cn protect its email with SPF and DMARC?
4.cn scores 28/100 (grade F) for email security. More than one SPF record was found. Receivers treat this as an error, so SPF fails for all mail. More than one DMARC record was found, so receivers ignore DMARC entirely.
What are the name servers of 4.cn?
4.cn uses vip3.alidns.com, vip4.alidns.com.