DNS Report: 189.cn

Generated: 2026-08-09T01:30:00-05:00

56/100

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 records20/203 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 certificate55/5523 day(s) remaining.
WARNINGCertificate lifetime6/10Full 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 response0/40HTTP/2 412
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
117.89.29.19
AAAA
CNAME
MX
20 mx2-189.21cn.com.
10 mta-189.21cn.com.
30 mx3-189.21cn.com.
TXT
"globalsign-domain-verification=aF1WppYM23EmniP08To6CoRhshTaAUbFJIFOs1q7VY"
"b3d973d953124f18b572c0b2775d1eee"
"google-site-verification=fnhC9eZ-Dmna-6EIvU0mJXk52k0A5TChiQaulg-xdss"
"d6baa51391750005fce703030c1306562566d86135d518bd4bf0b10b3d99261f"
"v=spf1 include:mail-spf.21cn.com include:hwmail-spf.21cn.com -all"
NS
ns1.chinanet.cn.
ns2.chinanet.cn.
SOA
master.189.cn. root.189.cn. 2021052701 10800 3600 1209600 3600
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP