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81
Total
95
DNS
45
Email
88
Security
55
Network
100
Availability
Domainxmu.edu.cn
IPv41
IPv61
MX records1
StatusActive
Domain technical report

厦门大学

xmu.edu.cn

Generated: 2026-08-09T22:30:06-05:00 · Cached result

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IPv41
IPv61
MX1
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

1 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

1 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

167 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers23 / 35 pts · Security

6 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 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

1 record(s)
219.229.81.200

AAAA

1 record(s)
2001:da8:e800:251c::200

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
1 mailgateway.xmu.edu.cn.

TXT

1 record(s)
"v=spf1 ip4:210.34.0.5 ip4:210.34.0.6 ip4:210.34.0.25 include:spf.icoremail.net -all"

NS

2 record(s)
ns2.xmu.edu.cn.
ns1.xmu.edu.cn.

SOA

1 record(s)
ns1.xmu.edu.cn. vhost.xmu.edu.cn. 2026081001 10800 900 1814400 10800

CAA

0 record(s)
—

Not configured

DS

1 record(s)
5849 13 2 234200641090601331D5DCA9710AA474FBA6BAF5631CC133E187A1E0 5EB07657

DNSKEY

1 record(s)
257 3 13 BaG1Aekc3eNZgyNdfJcEUSlFqBP18XXBnETOdl0Suz9QqUek4sh7IDaI wjqv6VykcuF/1T7SrAZ1YPQb+UOXbA==

RRSIG

6 record(s)
TXT 13 3 1200 20260818082230 20260804072847 5849 xmu.edu.cn. HIGeh7hmoaXq6YlAHS3Vdo3ApX7JVCgUkX41ach4bw2D4bCYv/QGe0Dv w2PbMI7jw9hKdAFQRWTB1dKgiUAdxQ==
NS 13 3 1200 20260818082230 20260804072847 5849 xmu.edu.cn. 8b+/IW44OYYK6hqobYPDz2vrzl6GTepTv0EGjNoyQB0G2Iw4D3ffGAcG JDwBoUjFheZgP+SdOrcUjuZy7UGxQQ==
SOA 13 3 1200 20260824024805 20260810014805 5849 xmu.edu.cn. Or5VGFKW3tNfUlKWMsqvpXKD/N+Ly1bxZU1nTzBtnPLIH4Wvk9sSa3kx 1krUpBy4sk5FL0X51MukhOdR5mS6OQ==
A 13 3 1200 20260818082230 20260804072847 5849 xmu.edu.cn. pxdW0dSW+7ZWHC5ogph4IcRsBNikNphp1ibeEdgTuSOwAWNT9mezWASj ky1O7Vdk3lvMnMvsga9MAC3xun4/Iw==
AAAA 13 3 1200 20260818082230 20260804072847 5849 xmu.edu.cn. PDTGFyA4Hx50dB2n1BvuEm3gu8HSPDRXj0FwAq1cMLwGUMIUcKg0ok54 ETrvxcLnmee1kmY6CvuwQBe6pdoaGw==
DS 8 3 172800 20260823174004 20260809171632 44583 edu.cn. Y4PGTPxkhnWf09pwSZUZOSVSlmKUAguC6+ZswMFIDbVZqURyDOs1ceV2 POSKE/1jqO4VuapYnFwqT2wQl9OsRgsCUw818V1vkZJllh+TZRNRyNHF PV/5JItP05xXtrwH/CUiy6SsJbSSuE0qzr+6+JlpegUmD4Xx5J5uo48a 6yb6Bl6TMaaIsJuNpP+deI4DmCxeRDjhtWdsCvJIXBxxWlhRUb5Hm44C fqoRt5w4ZcXgiiTtDitcyknQcLV1smaVhn9Nl6IO9ZUqLycuoWYZtIWG Rgb23MiCw9kou0yW70gbZR8P6AeRYEkJ6LAVqUA0SGmJrw5nJNqIy0BK 7r5rrQ==

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 ip4:210.34.0.5 ip4:210.34.0.6 ip4:210.34.0.25 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
厦门大学
Description
Final URL
https://www.xmu.edu.cn/
HTTP status
206

HTTP

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

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
TrustAsia Technologies, Inc.
CN
*.xmu.edu.cn
Valid from
2026-07-09T03:00:00-05:00
Valid until
2027-01-24T01:59:59-06:00
Days remaining
167
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

6 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
—
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
219.229.81.200
339,43 ms
Cloudflare
1.1.1.1
219.229.81.200
783,80 ms
Quad9
9.9.9.9
219.229.81.200
565,67 ms
OpenDNS
208.67.222.222
219.229.81.200
1.152,16 ms
AdGuard
94.140.14.14
219.229.81.200
352,99 ms

IP, geolocation and ASNAssociated network information

219.229.81.200

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

mailgateway.xmu.edu.cn

Port 25: Closed/unreachable - 261.7 ms - 
Port 465: Closed/unreachable - 564.3 ms - 
Port 587: Closed/unreachable - 571.6 ms -

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