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56
Total
85
DNS
90
Email
0
Security
50
Network
60
Availability
Domainsjtu.edu.cn
IPv41
IPv60
MX records4
StatusActive
Domain technical report

sjtu.edu.cn

sjtu.edu.cn

Generated: 2026-08-09T00:08:02-05:00 · Cached result

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IPv41
IPv60
MX4
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 chain15 / 15 pts · Dns

DS and DNSKEY detected.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

4 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
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 DNS30 / 30 pts · Network

PTR: www.sjtu.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 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

1 record(s)
202.120.2.119

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

4 record(s)
10 mx01.sjtu.edu.cn.
20 mx03.sjtu.edu.cn.
10 mx02.sjtu.edu.cn.
20 mx04.sjtu.edu.cn.

TXT

3 record(s)
"google-site-verification=mcuNzNPcotg0Umk8i7PNvtpd5_wDv6V-Q-Fo3vYMcxk"
"v=spf1 ip4:202.112.26.0/24 ip4:202.120.2.0/24 ip4:202.121.179.0/24 ip4:111.186.58.48 ip4:111.186.58.61 ip4:111.186.58.62 ip4:111.186.58.66 ip4:111.186.58.24 -all"
"ic14zi8kzf8g848uofs9wvk1s43dzz88"

NS

2 record(s)
dns.sjtu.edu.cn.
apple.sjtu.edu.cn.

SOA

1 record(s)
dns.sjtu.edu.cn. hostmaster.sjtu.edu.cn. 2608081951 10800 3600 604800 3600

CAA

0 record(s)
—

Not configured

DS

1 record(s)
37831 8 2 3A539EDE90E0619501F909760CA33DC69C07B18BB4E5B19D2D3EB9EA 544A0B2C

DNSKEY

2 record(s)
256 3 8 AwEAAbY3Z/XLT9tud2Xa10s6Kudhvx+Y+u2fM+/xd8MnnZbdOyik4F2t c3XMojdmMSxg5G2HwyhUdsOK90GlZocT+GrGe4a10DWtwO2eKg1jPq7p rbEjUcpP0Ikh/x8SQMo2JOyYaUyCJynzEnORvRBdSs3e2mbHPp7CWnX3 UbrEBraV
257 3 8 AwEAAbucesgbeM/VIiqQYMhoNvBPQBCH6ko+WW52iNHbFaKZIMec32o3 8ToxIjr7v6tXfA9XR5HUrvupzvMfBvrU/p8TOt5fdDS2CrcdmmN3NmnR RQpYYS0XUp+v54JonWyAU+4RU8AIHPE1OuE4zw0BmgTfS8VkdCgI0CHh oqZkNVi/Fhqxe6oEbmjfYv44k0tV25Xk12z2Cwok1WrjnCUIctVo54/3 kFBVe92pTBtNM4cIqRPrDS6Zl4M0lRYaxrBxQ4CJxmOtVfayLNTZJn/7 1XJy1TffQZji6nf9Y4gGS2FvtBUfzszq3Qw8VgS9pZc/Mz0Hq128tCv4 2DSOhPydDGs=

RRSIG

4 record(s)
A 8 3 300 20260907105038 20260808105038 9528 sjtu.edu.cn. kaKV8UL+M0rTpBvBIhJIInaOEKu17YCIKqeaWTOeyb0t2h3L1TgKmjY7 XZ8ebC8UHUN0eBovki8nsFVGfkJnl3f1oU6cdYJV9ChBfQvTg3HDdThk M0/FJeyfwRTm0dOUUwxEIgLOlO2PBgTZoByRQG2hDkxWGt/7Vf7oW7Hu nCk=
MX 8 3 300 20260907105038 20260808105038 9528 sjtu.edu.cn. RjBuudxGrbXpwa1RT7vqVCOhuW/LzlnFjXuwi+ir3hfXP4Vq/e0E7dzs xjJMMCg9Pt8WY1TmJ+HcTTSB5IvBXY/CRpNzi6w4hKl5K7I/WAwuQ8NO IqyPNn83ilVGXAo7UPZQ1mgCkAoFstWuhSAXZdiHjMnq8csy3Ehi+JDL +4I=
NS 8 3 3600 20260907105038 20260808105038 9528 sjtu.edu.cn. HmubHBE/OeH4bn1qj+7WoIy0A4GpaGzB5eBBH4odGix9FpNr8cH8JYNs LOMkdQyEBGwrHJ1CHxqKklGHN2VRkmt5IEGSC28rF2XaTI/b7ZkFUCK1 /rebdK17d0YR9oWAXmt6LHfJXjw5Ifvkn4Q57AFfp5fJjr4pDSEotLtD liA=
DS 8 3 172800 20260818104027 20260804094215 44583 edu.cn. n2/T+FqHHeUO4TeNRh06aB3rftXunZruJysh1VYZoqJtOzIDq7Qnq33Z W+0iOwyUx7WuYxJ0H80akA31etFuXoMJMY3/h9bxoN79W7hDMOhnNhd0 yXGo88qvwj/WVUUn5BL1oXuxi3yWUWsD6tjn5mo6vXHc1vU2UnycUaN5 nSoYsR9/i0Y8UryuD5OatFxuXLK47StoioKdPUGTbpcjQ33bncpn7nsU dPVu9xtnKMnzbAmk7+tZrIX8h3RGe/J6xu+wHJn6Z1Oltnd3/eA5JdVS 3OGOLdzQfZw81rKOFkW7/QBPoCQXfmqvpy1KS0QSY2iuKtL8QZXwibwo cD4d3g==

NSEC

1 record(s)
chall.0ops.sjtu.edu.cn. A NS SOA MX TXT RRSIG NSEC DNSKEY

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 ip4:202.112.26.0/24 ip4:202.120.2.0/24 ip4:202.121.179.0/24 ip4:111.186.58.48 ip4:111.186.58.61 ip4:111.186.58.62 ip4:111.186.58.66 ip4:111.186.58.24 -all

DMARC

Configured
v=DMARC1; p=none;

DKIM

Selector default
v=DKIM1; h=sha256; k=rsa; s=email; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0qTydw3hTHRtxQEL6ivWgMgz2fE0O8dlyMccXBYZL0DWQc0jDZy5+HRhOMPT+WFvXii7mIJaCbpdP7ARuIYbE9zPTVHczHfqMM9TJCfjtxoa+YL6bB8Z8+i+J6EnXstpDJtWxcG1fQklXHxKILngwVKnkFowCre+xarKf5qal6q3tpkbctFNEo1wmIMQWE49jwIYMPW0qhwvtQrPaAvGfj2g2FQqFk4MfK8xS1i3fE2AGpkpxAFkkBVuH2bac2RIdd+Ypaf97KLdsLLNgcfcR1LqW+aKwCfVOps66Tlq2gmdofvFypwdF+1onAOwoOgR0YNhjInCWgEx6xFkhuRk0wIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

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

HTTP

Status
Final URL
https://sjtu.edu.cn/
Version
0
Server
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
202.120.2.119
36,01 ms
Cloudflare
1.1.1.1
202.120.2.119
266,82 ms
Quad9
9.9.9.9
202.120.2.119
311,64 ms
OpenDNS
208.67.222.222
202.120.2.119
268,57 ms
AdGuard
94.140.14.14
202.120.2.119
307,97 ms

IP, geolocation and ASNAssociated network information

202.120.2.119

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

mx01.sjtu.edu.cn

Port 25: Closed/unreachable - 257.2 ms - 
Port 465: Closed/unreachable - 4005.4 ms - 
Port 587: Closed/unreachable - 4262.7 ms -

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