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77
Total
70
DNS
70
Email
81
Security
50
Network
100
Availability
Domainsysu.edu.cn
IPv41
IPv60
MX records1
StatusActive
Domain technical report

中山大学 SUN YAT-SEN UNIVERSITY

sysu.edu.cn

中山大学是由孙中山先生亲手创立，有着100多年的办学传统，由1952年院系调整后分设的中山大学和中山医科大学于2001年10月合并而成，是一所包括文学、历史学、哲学、法学、经济学、管理学、教育学、理学、医学、工学、农学、艺术学等在内的综合性大学。

Generated: 2026-08-09T23:38:17-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv60
MX1
NS3

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

3 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

1 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

67 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: www.sysu.edu.cn

i
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 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

1 record(s)
202.116.64.8

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 mail.sysu.edu.cn.

TXT

2 record(s)
"v=spf1 ip4:202.116.64.0/24 -all"
"adobe-idp-site-verification=a2eb4ed6c5f7ff5c94a092e620c0f476dfe11b8d7411b1d46f8d3ad36bf7b0a9"

NS

3 record(s)
ns2.sysu.edu.cn.
ns1.sysu.edu.cn.
ns3.sysu.edu.cn.

SOA

1 record(s)
ns1.sysu.edu.cn. hostmaster.mail.sysu.edu.cn. 2026072400 10800 3600 604800 3600

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 ip4:202.116.64.0/24 -all

DMARC

Configured
v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc_report@mail.sysu.edu.cn

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
中山大学 SUN YAT-SEN UNIVERSITY
Description
中山大学是由孙中山先生亲手创立，有着100多年的办学传统，由1952年院系调整后分设的中山大学和中山医科大学于2001年10月合并而成，是一所包括文学、历史学、哲学、法学、经济学、管理学、教育学、理学、医学、工学、农学、艺术学等在内的综合性大学。
Final URL
https://www.sysu.edu.cn/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://www.sysu.edu.cn/
Version
2
Server
BigIP
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
WoTrus CA Limited
CN
*.sysu.edu.cn
Valid from
2025-09-16T02:23:36-05:00
Valid until
2026-10-16T02:23:35-05:00
Days remaining
67
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES128-GCM-SHA256

Security headers

4 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
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
202.116.64.8
311,86 ms
Cloudflare
1.1.1.1
202.116.64.8
2.947,28 ms
Quad9
9.9.9.9
202.116.64.8
1.761,36 ms
OpenDNS
208.67.222.222
202.116.64.8
30,97 ms
AdGuard
94.140.14.14
202.116.64.8
764,28 ms

IP, geolocation and ASNAssociated network information

202.116.64.8

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

mail.sysu.edu.cn

Port 25: Closed/unreachable - 265.7 ms - 
Port 465: Closed/unreachable - 278.2 ms - 
Port 587: Closed/unreachable - 262.1 ms -

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