Rank #2,288Updated November 10, 2026
cas.cn
中国科学院
The site runs on jQuery, Swiper, Content Security Policy. Its email security grade is C. Its SSL certificate is issued by China Financial Certification Authority and is valid for 38 more days.
- Domain age
- —
- Technologies
- 3
- Email security
- C
- SSL days left
- 38
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 159.226.242.61 | 3600 |
| MX | mx.cstnet.cn 5 | 3600 |
| NS | ns4.cstnet.cn | 3600 |
| NS | ns3.cstnet.cn | 3600 |
| TXT | v=spf1 include:spf.mail.cstnet.cn -all | 300 |
| AAAA | 2400:dd01:1017:1000::9fe2:f23d | 3600 |
Technology stack
Security
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | CN, CFCA OV OCA, China Financial Certification Authority |
| Expires | December 18, 2026 |
| Days remaining | 38 |
| Protocol | TLSv1.3 |
| Names | *.cas.cn, cas.cn |
Email security
CScore 76/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnDKIM key found (selector: dkim) 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].
- good1 MX record(s) found.
Homepage metadata
| Title | 中国科学院 |
|---|---|
| Indexable | Yes |
| Word count | 734 |
About cas.cn
What technology does cas.cn use?
We detected 3 technologies on cas.cn, including jQuery, Swiper, Content Security Policy.
Does cas.cn protect its email with SPF and DMARC?
cas.cn scores 76/100 (grade C) for email security. DKIM key found (selector: dkim) but it is only 1024 bits; 2048 is recommended. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of cas.cn?
cas.cn uses ns4.cstnet.cn, ns3.cstnet.cn.