DNS Report: zhihu.com

Generated: 2026-08-08T18:09:01-05:00

69/100

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.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55124 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.
ERRORHTTP response0/40HTTP/2 405
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
43.135.83.2
AAAA
CNAME
MX
10 mxbiz2.qq.com.
5 mxbiz1.qq.com.
TXT
"v=spf1 include:spf.mail.qq.com -all"
"google-site-verification=WreyhhjBpv_EcWw27fGRsO7yz4sy_6oiT1HeoJfv1JQ"
"apple-domain-verification=0ABf57rqECBcCKb6"
"m5g7qjk31l5d1hkq6m3zvcf6lg2f0h16"
"3nsr8c3w7yg4bngn0z53wr22hm54s5q2"
NS
ns3.dnsv5.com.
ns4.dnsv5.com.
SOA
ns3.dnsv5.com. enterprise3dnsadmin.dnspod.com. 1783067233 3600 180 1209600 180
CAA
DS
DNSKEY
RRSIG
NSEC
\000.zhihu.com. A NS SOA MX TXT AAAA SRV RRSIG NSEC DNSKEY SVCB HTTPS CAA
NSEC3
SRV
NAPTR
TLSA
SSHFP