DNS Report: scnu.edu.cn

Generated: 2026-08-12T01:36:32-05:00

68/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/202 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.
ERRORDMARC0/25DMARC policy not found.
ERRORDKIM0/20No tested DKIM selector responded.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55196 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers12/353 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.
OKHTTP response40/40HTTP/2 200
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
121.8.171.51
AAAA
CNAME
MX
5 mx1.scnu.edu.cn.
5 mx2.scnu.edu.cn.
TXT
"v=spf1 ip4:121.8.171.22 ip4:121.8.171.23 ip4:222.200.128.130 ip4:222.200.128.131 include:spf.icoremail.net -all"
"v=DMARC1; p=none; fo=1; ruf=mailto:service@scnu.edu.cn; rua=mailto:service@scnu.edu.cn"
NS
hsut.scnu.edu.cn.
hsnc.scnu.edu.cn.
SOA
scnu.edu.cn. master.scnu.edu.cn.scnu.edu.cn. 2026071506 7200 345600 43200 360
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP