DNS Report: smartedu.cn

Generated: 2026-08-10T15:14:36-05:00

61/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/306 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 records20/201 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.
WARNINGHTTP security headers4/351 of 9 evaluated headers detected.
ERRORPTR reverse DNS0/30PTR not detected.
OKIPv4 diversity35/35Two 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
123.125.16.232
123.125.16.230
121.194.10.213
123.125.16.227
123.125.16.229
123.125.16.228
AAAA
CNAME
MX
0 mx.sendcloud.org.
TXT
"globalsign-domain-verification=7dBFn6kVMXyaPf4Ng6ogoGa0DGgglG3qnpGv2kdMfK"
"xwskdhjntntgx1gqdt9zbf6x23fpmlkr"
"v=spf1 include:spf.sendcloud.org -all"
NS
dns.smartedu.cn.
ns2.cernet.net.
dns2.smartedu.cn.
ns3.cernet.net.
SOA
ns2.net.edu.cn. hostmaster.dns.edu.cn. 2022062636 7200 1800 604800 600
CAA
DS
DNSKEY
;; communications error to 69.64.44.20#53: timed out
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP