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68
Total
70
DNS
45
Email
77
Security
20
Network
100
Availability
Domainscnu.edu.cn
IPv41
IPv60
MX records2
StatusActive
Domain technical report

华南师范大学

scnu.edu.cn

华南师范大学（South China Normal University）始建于1933年，前身是广东省立勷勤大学师范学院。1996年进入国家“211 工程”重点建设大学行列，2015年成为广东省人民政府和教育部共建高校，同年进入广东省高水平大学整体建设高校行列。学校现有广州石牌、广州大学城、佛山南海和汕尾 4 个校区，是一所覆盖哲学、经济学、法学、教育学、文学、历史学、理学、工学、农学、医学、管理学、艺术学 12个门类的综合性师范大学

Generated: 2026-08-12T01:36:32-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv60
MX2
NS2

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).

✓
SPF25 / 25 pts · Mail

SPF policy published.

!
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

196 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

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/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
121.8.171.51

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
5 mx1.scnu.edu.cn.
5 mx2.scnu.edu.cn.

TXT

2 record(s)
"v=spf1 ip4:121.8.171.22 ip4:121.8.171.23 ip4:222.200.128.130 ip4:222.200.128.131 include:spf.icoremail.net -all"
"v=DMARC1; p=none; fo=1; ruf=mailto:service@scnu.edu.cn; rua=mailto:service@scnu.edu.cn"

NS

2 record(s)
hsut.scnu.edu.cn.
hsnc.scnu.edu.cn.

SOA

1 record(s)
scnu.edu.cn. master.scnu.edu.cn.scnu.edu.cn. 2026071506 7200 345600 43200 360

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 ip4:121.8.171.22 ip4:121.8.171.23 ip4:222.200.128.130 ip4:222.200.128.131 include:spf.icoremail.net -all

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
华南师范大学
Description
华南师范大学（South China Normal University）始建于1933年，前身是广东省立勷勤大学师范学院。1996年进入国家“211 工程”重点建设大学行列，2015年成为广东省人民政府和教育部共建高校，同年进入广东省高水平大学整体建设高校行列。学校现有广州石牌、广州大学城、佛山南海和汕尾 4 个校区，是一所覆盖哲学、经济学、法学、教育学、文学、历史学、理学、工学、农学、医学、管理学、艺术学 12个门类的综合性师范大学
Final URL
https://scnu.edu.cn/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://scnu.edu.cn/
Version
3
Server
rums/b
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
*.scnu.edu.cn
Valid from
2026-01-25T18:00:00-06:00
Valid until
2027-02-24T17:59:59-06:00
Days remaining
196
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

3 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
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
121.8.171.51
290,75 ms
Cloudflare
1.1.1.1
121.8.171.51
1.197,62 ms
Quad9
9.9.9.9
121.8.171.51
638,28 ms
OpenDNS
208.67.222.222
121.8.171.51
883,16 ms
AdGuard
94.140.14.14
121.8.171.51
362,61 ms

IP, geolocation and ASNAssociated network information

121.8.171.51

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

mx1.scnu.edu.cn

Port 25: Closed/unreachable - 266.7 ms - 
Port 465: Closed/unreachable - 525.2 ms - 
Port 587: Closed/unreachable - 4018.7 ms -

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