DNS Report: 300.cn

Generated: 2026-08-09T13:33:51-05:00

47/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
OKIPv6 (AAAA)10/101 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.
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.
WARNINGIPv4 diversity20/35Two or more IPv4 addresses receive full points.
OKIPv6 connectivity35/35AAAA 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
117.50.168.2
AAAA
2403:a200:a200:1ff0::48
CNAME
MX
5 mxc.zmail300.cn.
50 mxu.zmail300.cn.
TXT
"v=spf1 include:spfv.zmail300.cn -all"
"dh5trucrdridbcu4l8b8m763h4"
"ruolwqdte4"
"y40wdsnl0jt7nwj5stpzymj70wm0pm7h"
"tyzcn0c453s87p93x3mfqrk9vl9x16h4"
"917e719950a2bf6e4ea9e5f7eb7c17eb"
NS
ce1.xincache.com.
ce2.xincache.com.
SOA
ns11.xincache.com. ns12.xincache.com. 1783994221 3600 180 1209600 180
CAA
DS
DNSKEY
RRSIG
NSEC
\000.300.cn. A NS SOA MX TXT AAAA SRV RRSIG NSEC DNSKEY SVCB HTTPS CAA
NSEC3
SRV
NAPTR
TLSA
SSHFP