Domain technical report
404 Not Found
nsfc.gov.cn
IPv41
IPv61
MX0
NS4
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57
Total
90
DNS
0
Email
65
Security
55
Network
60
Availability
Domainnsfc.gov.cn
IPv41
IPv61
MX records0
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
1 IPv4 address(es) detected.
IPv6 (AAAA)10 / 10 pts · Dns
1 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
4 NS record(s); 2 or more required.
SOA record10 / 10 pts · Dns
Authoritative zone record.
DNSSEC chain15 / 15 pts · Dns
DS and DNSKEY detected.
CAA policy5 / 5 pts · Dns
Certificate authority restriction.
DNS propagation0 / 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
133 day(s) remaining.
Certificate lifetime10 / 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 connectivity35 / 35 pts · Network
AAAA availability.
DNS resolution40 / 40 pts · Availability
At least one address family must resolve.
HTTP response0 / 40 pts · Availability
HTTP/1.1 404 Not Found
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
2 record(s)www.nsfc.gov.cn. 42.247.12.105
AAAA
2 record(s)www.nsfc.gov.cn. 2001:250:220:100::4
CNAME
1 record(s)www.nsfc.gov.cn.
MX
0 record(s)—
Not configured
TXT
0 record(s)—
Not configured
NS
4 record(s)n2.nsfc.gov.cn. ns4.nsfc.gov.cn. ns3.nsfc.gov.cn. ns1.nsfc.gov.cn.
SOA
1 record(s)www.nsfc.gov.cn.
CAA
1 record(s)www.nsfc.gov.cn.
DS
1 record(s)www.nsfc.gov.cn.
DNSKEY
1 record(s)www.nsfc.gov.cn.
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
1 record(s)www.nsfc.gov.cn.
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
404 Not Found
Description
Final URL
https://nsfc.gov.cn/
HTTP status
404
HTTP
Status
HTTP/1.1 404 Not Found
Final URL
https://nsfc.gov.cn/
Version
2
Server
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
China Financial Certification Authority
CN
*.nsfc.gov.cn
Valid from
2025-11-21T04:02:02-06:00
Valid until
2026-12-21T04:02:01-06:00
Days remaining
133
Protocol
TLSv1.2
Cipher
AES128-SHA
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
ReviewDifferences detected
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.842.247.12.105
299,27 ms
Cloudflare
1.1.1.1159.226.244.24, 210.75.240.5, 42.247.12.105
494,43 ms
Quad9
9.9.9.942.247.12.105
754,25 ms
OpenDNS
208.67.222.222159.226.244.24, 210.75.240.5, 42.247.12.105
693,42 ms
AdGuard
94.140.14.1442.247.12.105
1.009,28 ms
IP, geolocation and ASNAssociated network information
42.247.12.105
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
nsfc.gov.cn
Port 25: Closed/unreachable - 228.4 ms - Port 465: Closed/unreachable - 4018.3 ms - Port 587: Closed/unreachable - 4019.6 ms -