DNS Report: pku.edu.cn

Generated: 2026-08-08T21:07:33-05:00

66/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/204 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
ERRORDNSSEC chain0/15Both DS and DNSKEY are required.
ERRORCAA policy0/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/202 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55228 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
ERRORHTTP security headers0/350 of 9 evaluated headers detected.
ERRORPTR reverse DNS0/30PTR not detected.
WARNINGIPv4 diversity20/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
ERRORHTTP response0/40No successful HTTP response.
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
162.105.131.160
AAAA
CNAME
MX
5 mx-pku-edu-cn.icoremail.net.
10 gateway.pku.edu.cn.
TXT
"v=spf1 ip4:162.105.129.0/24 include:spf.icoremail.net -all"
"_hzos8v1tcdrxo5uk1i5qyl7pnu7w15x"
NS
DNS1.pku.edu.cn.
DNS3.pku.edu.cn.
DNS2.pku.edu.cn.
ns.pku.edu.cn.
SOA
ns.pku.edu.cn. hostmaster.pku.edu.cn. 2026080701 3600 300 2592000 3600
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP