DNS Report: bnu.edu.cn

Generated: 2026-08-10T01:33:24-05:00

30/100

Diagnostics

StatusCheckPointsDetails
ERRORIPv4 (A)0/300 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/203 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.
ERRORDNS propagation0/10Agreement between public resolvers.
OKMX records20/201 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.
ERRORValid TLS certificate0/55No valid certificate was retrieved.
ERRORCertificate lifetime0/10Full points require at least 30 days remaining.
ERRORHTTP security headers0/350 of 9 evaluated headers detected.
ERRORPTR reverse DNS0/30PTR not detected.
ERRORIPv4 diversity0/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
ERRORDNS resolution0/40At least one address family must resolve.
ERRORHTTP response0/40No successful HTTP response.
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
AAAA
CNAME
MX
10 email.bnu.edu.cn.
TXT
"v=spf1 ip4:219.142.121.58  ip4:202.112.80.198 ip4:114.255.220.28 include:spf.icoremail.net -all"
NS
ns.bnu.edu.cn.
ns2.bnu.edu.cn.
ns3.bnu.edu.cn.
SOA
ns.bnu.edu.cn. info.bnu.edu.cn. 2000004828 900 600 604800 86400
CAA
DS
DNSKEY
RRSIG
;; communications error to 69.64.44.20#53: timed out
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP