Rank #1,483Updated November 10, 2026
pku.edu.cn
The site runs on jQuery, Slick, HSTS and 1 other technologies. Its email security grade is C. Its SSL certificate is issued by TrustAsia Technologies, Inc. and is valid for 135 more days.
- Domain age
- —
- Technologies
- 4
- Email security
- C
- SSL days left
- 135
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 162.105.131.160 | 300 |
| MX | gateway.pku.edu.cn 10 | 300 |
| MX | mx-pku-edu-cn.icoremail.net 5 | 300 |
| NS | dns2.pku.edu.cn | 300 |
| NS | dns1.pku.edu.cn | 300 |
| NS | ns.pku.edu.cn | 300 |
| NS | dns3.pku.edu.cn | 300 |
| TXT | cf95911d8f72efa4f04023bb828a06bf3c568fe15cb518255362cdc697739f73 | 21600 |
| TXT | v=spf1 ip4:162.105.129.0/24 include:spf.icoremail.net -all | 21600 |
Technology stack
SSL certificate
| Valid | Invalid |
|---|---|
| Issuer | CN, TrustAsia OV TLS RSA CA 2024, TrustAsia Technologies, Inc. |
| Expires | March 25, 2027 |
| Days remaining | 135 |
| Protocol | TLSv1.2 |
| Names | www.pku.edu.cn |
Email security
CScore 76/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnSPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it.
- 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].
- good2 MX record(s) found.
About pku.edu.cn
What technology does pku.edu.cn use?
We detected 4 technologies on pku.edu.cn, including jQuery, Slick, HSTS, Nginx.
Does pku.edu.cn protect its email with SPF and DMARC?
pku.edu.cn scores 76/100 (grade C) for email security. SPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it. DKIM key found (selector: dkim) but it is only 1024 bits; 2048 is recommended.
What are the name servers of pku.edu.cn?
pku.edu.cn uses dns2.pku.edu.cn, dns1.pku.edu.cn, ns.pku.edu.cn, dns3.pku.edu.cn.