Domain technical report
forteacher.cn
forteacher.cn
IPv41
IPv60
MX2
NS2
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36
Total
70
DNS
20
Email
0
Security
20
Network
60
Availability
Domainforteacher.cn
IPv41
IPv60
MX records2
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
1 IPv4 address(es) detected.
IPv6 (AAAA)0 / 10 pts · Dns
0 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 records20 / 20 pts · Mail
2 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 certificate0 / 55 pts · Security
No valid certificate was retrieved.
Certificate lifetime0 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers0 / 35 pts · Security
0 of 9 evaluated headers detected.
PTR reverse DNS0 / 30 pts · Network
PTR not detected.
IPv4 diversity20 / 35 pts · Network
Two or more IPv4 addresses receive full points.
IPv6 connectivity0 / 35 pts · Network
AAAA availability.
DNS resolution40 / 40 pts · Availability
At least one address family must resolve.
HTTP response0 / 40 pts · Availability
No successful HTTP response.
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
1 record(s)39.105.192.242
AAAA
0 record(s)—
Not configured
CNAME
0 record(s)—
Not configured
MX
2 record(s)10 mxbiz2.qq.com. 5 mxbiz1.qq.com.
TXT
0 record(s)—
Not configured
NS
2 record(s)dns8.hichina.com. dns7.hichina.com.
SOA
1 record(s)dns7.hichina.com. hostmaster.hichina.com. 2026011209 3600 1200 86400 600
CAA
0 record(s)—
Not configured
DS
0 record(s)—
Not configured
DNSKEY
0 record(s)—
Not configured
RRSIG
1 record(s);; communications error to 69.64.44.20#53: timed out
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
No dataTitle
Description
Final URL
https://forteacher.cn/
HTTP status
HTTP
Status
Final URL
https://forteacher.cn/
Version
0
Server
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
DigiCert Inc
CN
p.t.forteacher.cn
Valid from
2026-02-01T18:00:00-06:00
Valid until
2026-05-02T18:59:59-05:00
Days remaining
-100
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES256-SHA384
Security headers
0 activeHSTSNot detected
Content Security PolicyNot detected
X-Content-Type-OptionsNot detected
X-Frame-OptionsNot detected
Referrer PolicyNot detected
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
8.8.8.839.105.192.242
317,89 ms
Cloudflare
1.1.1.139.105.192.242
705,46 ms
Quad9
9.9.9.939.105.192.242
502,71 ms
OpenDNS
208.67.222.22239.105.192.242
1.924,56 ms
AdGuard
94.140.14.1439.105.192.242
291,90 ms
IP, geolocation and ASNAssociated network information
39.105.192.242
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
mxbiz2.qq.com
Port 25: Closed/unreachable - 29.1 ms - Port 465: Closed/unreachable - 4035.1 ms - Port 587: Closed/unreachable - 4019.5 ms -