Domain technical report
阮一峰的个人网站 - Ruan YiFeng's Personal Website
ruanyifeng.com
IPv42
IPv62
MX0
NS2
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57
Total
80
DNS
0
Email
73
Security
70
Network
60
Availability
Domainruanyifeng.com
IPv42
IPv62
MX records0
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
2 IPv4 address(es) detected.
IPv6 (AAAA)10 / 10 pts · Dns
2 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
2 NS record(s); 2 or more required.
SOA record10 / 10 pts · Dns
Authoritative zone record.
DNSSEC chain0 / 15 pts · Dns
Both DS and DNSKEY are required.
CAA policy0 / 5 pts · Dns
Certificate authority restriction.
DNS propagation10 / 10 pts · Dns
Agreement between public resolvers.
MX records0 / 20 pts · Mail
0 MX record(s).
SPF0 / 25 pts · Mail
SPF policy not found.
DMARC0 / 25 pts · Mail
DMARC policy not found.
DKIM0 / 20 pts · Mail
No tested DKIM selector responded.
MTA-STS0 / 5 pts · Mail
Mail transport policy.
TLS-RPT0 / 5 pts · Mail
TLS reporting policy.
Valid TLS certificate55 / 55 pts · Security
80 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers8 / 35 pts · Security
2 of 9 evaluated headers detected.
PTR reverse DNS0 / 30 pts · Network
PTR not detected.
IPv4 diversity35 / 35 pts · Network
Two or more IPv4 addresses receive full points.
IPv6 connectivity35 / 35 pts · Network
AAAA availability.
DNS resolution40 / 40 pts · Availability
At least one address family must resolve.
HTTP response0 / 40 pts · Availability
HTTP/2 403
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
2 record(s)104.21.52.150 172.67.200.141
AAAA
2 record(s)2606:4700:3032::6815:3496 2606:4700:3034::ac43:c88d
CNAME
0 record(s)—
Not configured
MX
0 record(s)—
Not configured
TXT
0 record(s)—
Not configured
NS
2 record(s)kara.ns.cloudflare.com. norman.ns.cloudflare.com.
SOA
1 record(s)kara.ns.cloudflare.com. dns.cloudflare.com. 2410982547 10000 2400 604800 1800
CAA
0 record(s)—
Not configured
DS
0 record(s)—
Not configured
DNSKEY
0 record(s)—
Not configured
RRSIG
0 record(s)—
Not configured
NSEC
0 record(s)—
Not configured
NSEC3
0 record(s)—
Not configured
SRV
0 record(s)—
Not configured
NAPTR
0 record(s)—
Not configured
TLSA
0 record(s)—
Not configured
SSHFP
0 record(s)—
Not configured
SPF
Not configured—
Not configured
DMARC
Not configured—
Not configured
DKIM
Not found—
Not configured
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
阮一峰的个人网站 - Ruan YiFeng's Personal Website
Description
Final URL
https://ruanyifeng.com/
HTTP status
206
HTTP
Status
HTTP/2 403
Final URL
https://ruanyifeng.com/
Version
3
Server
cloudflare
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
Google Trust Services
CN
ruanyifeng.com
Valid from
2026-07-31T05:20:16-05:00
Valid until
2026-10-29T06:19:34-05:00
Days remaining
80
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
2 activeHSTSNot detected
Content Security PolicyNot detected
X-Content-Type-OptionsNot detected
X-Frame-OptionsImplemented
Referrer PolicyImplemented
Permissions PolicyNot detected
Cross-Origin-Opener-PolicyNot detected
Cross-Origin-Embedder-PolicyNot detected
Cross-Origin-Resource-PolicyNot detected
DNS propagationComparison across public resolvers
Public resolver comparison
ConsistentConsistent propagation
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.8104.21.52.150, 172.67.200.141
75,94 ms
Cloudflare
1.1.1.1104.21.52.150, 172.67.200.141
52,74 ms
Quad9
9.9.9.9104.21.52.150, 172.67.200.141
55,27 ms
OpenDNS
208.67.222.222104.21.52.150, 172.67.200.141
68,19 ms
AdGuard
94.140.14.14104.21.52.150, 172.67.200.141
74,65 ms
IP, geolocation and ASNAssociated network information
104.21.52.150
No datasuccess
No
country
region
city
asn
organization
isp
172.67.200.141
No datasuccess
No
country
region
city
asn
organization
isp
Visitor information
Visitorip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No
SMTPEmail port connectivity
ruanyifeng.com
Port 25: Closed/unreachable - 0.9 ms - Port 465: Closed/unreachable - 4002 ms - Port 587: Closed/unreachable - 4004.6 ms -