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60
Total
80
DNS
65
Email
0
Security
70
Network
100
Availability
Domaincnnic.cn
IPv42
IPv62
MX records2
StatusActive
Domain technical report

首页----中国互联网络信息中心

cnnic.cn

Generated: 2026-08-12T06:01:42-05:00 · Cached result

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IPv42
IPv62
MX2
NS5

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

5 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).

✓
SPF25 / 25 pts · Mail

SPF policy published.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
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 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 response40 / 40 pts · Availability

HTTP/1.1 200 OK

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)
42.83.144.14
159.226.6.133

AAAA

2 record(s)
2001:dc7:dd01:0:218:241:97:42
2001:dc7:5d0c:0:42:83:144:13

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
10 mail01.cnnic.cn.
20 mail02.cnnic.cn.

TXT

1 record(s)
"v=spf1 ip4:218.241.118.0/24 -all"

NS

5 record(s)
c.cnnic.cn.
b.cnnic.cn.
d.cnnic.cn.
a.cnnic.cn.
e.cnnic.cn.

SOA

1 record(s)
a.cnnic.cn. sysmgr.cnnic.cn. 2026080401 1800 900 604800 600

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

Configured
v=spf1 ip4:218.241.118.0/24 -all

DMARC

Not configured
—

Not configured

DKIM

Selector dkim
v=DKIM1; k=rsa;p= MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8ywTW1c3Pdov5TNioKyTiFOc41y+dIXjJF51fEAzEivuyXZzlfVjEcVYDCuie1K77KmMmQGhnzpkQgBBeUrIeP7nogalBBL7R/mT8smeFXY8SYb4gNNATqksXBtiWtTjnSX12GYvzjE0NFwgJANS4r/lI4e3RF6a6AhB4jBhqdQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
首页----中国互联网络信息中心
Description
Final URL
https://cnnic.cn/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://cnnic.cn/
Version
2
Server
nginx
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Unavailable
Available
No
Issuer
CN
Valid from
Valid until
Days remaining
Protocol
Cipher

Security headers

0 active
—
HSTSNot 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

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
159.226.6.133, 42.83.144.14
62,17 ms
Cloudflare
1.1.1.1
159.226.6.133, 42.83.144.14
50,67 ms
Quad9
9.9.9.9
159.226.6.133, 42.83.144.14
58,45 ms
OpenDNS
208.67.222.222
159.226.6.133, 42.83.144.14
27,07 ms
AdGuard
94.140.14.14
159.226.6.133, 42.83.144.14
293,31 ms

IP, geolocation and ASNAssociated network information

42.83.144.14

No data
success
No
country
region
city
asn
organization
isp

159.226.6.133

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.216.212
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

mail01.cnnic.cn

Port 25: Closed/unreachable - 8.6 ms - 
Port 465: Closed/unreachable - 4020.2 ms - 
Port 587: Closed/unreachable - 4020.9 ms -

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