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62
Total
50
DNS
70
Email
65
Security
65
Network
60
Availability
Domainhuanghuai.edu.cn
IPv42
IPv60
MX records2
StatusActive
Domain technical report

huanghuai.edu.cn

huanghuai.edu.cn

Generated: 2026-08-09T15:10:27-05:00 · Cached result

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IPv42
IPv60
MX2
NS1

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

!
Name server redundancy0 / 20 pts · Dns

1 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.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
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

1463 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 DNS30 / 30 pts · Network

PTR: pc0.zz.ha.cn

✓
IPv4 diversity35 / 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

2 record(s)
218.28.103.227
211.67.177.59

AAAA

0 record(s)
—

Not configured

CNAME

1 record(s)
;; communications error to 69.64.44.20#53: timed out

MX

2 record(s)
5 mxbiz1.qq.com.
10 mxbiz2.qq.com.

TXT

1 record(s)
"v=spf1 include:spf.mail.qq.com ~all"

NS

1 record(s)
dns.huanghuai.edu.cn.

SOA

1 record(s)
dns.huanghuai.edu.cn. service\@huanghuai.edu.cn. 2025061779 1200 1200 1209600 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 include:spf.mail.qq.com ~all

DMARC

Configured
v=DMARC1; p=none; rua=mailto:mailauth-reports@qq.com

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

No data
Title
Description
Final URL
https://huanghuai.edu.cn/
HTTP status

HTTP

Status
Final URL
https://huanghuai.edu.cn/
Version
0
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Default Company Ltd
CN
Valid from
2020-08-13T21:03:57-05:00
Valid until
2030-08-11T21:03:57-05:00
Days remaining
1463
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES256-GCM-SHA384

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
211.67.177.59, 218.28.103.227
484,32 ms
Cloudflare
1.1.1.1
211.67.177.59, 218.28.103.227
757,44 ms
Quad9
9.9.9.9
211.67.177.59, 218.28.103.227
502,10 ms
OpenDNS
208.67.222.222
211.67.177.59, 218.28.103.227
679,56 ms
AdGuard
94.140.14.14
211.67.177.59, 218.28.103.227
838,70 ms

IP, geolocation and ASNAssociated network information

218.28.103.227

No data
success
No
country
region
city
asn
organization
isp

211.67.177.59

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
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

mxbiz1.qq.com

Port 25: Closed/unreachable - 29.2 ms - 
Port 465: Closed/unreachable - 4010.3 ms - 
Port 587: Closed/unreachable - 4021.2 ms -

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