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Total

DNS

Email

Security

Network

Availability

Domainnwpu.edu.cn

IPv42

IPv60

MX records3

StatusActive

Domain technical report

nwpu.edu.cn

Generated: 2026-08-11T15:01:54-05:00 · Cached result

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IPv42

IPv60

MX3

NS4

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 redundancy20 / 20 pts · Dns

4 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 policy5 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

3 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 certificate55 / 55 pts · Security

245 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 DNS0 / 30 pts · Network

PTR not detected.

✓

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

HTTP/1.1 412 Precondition Failed

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)

202.117.80.233
202.117.80.223

AAAA

0 record(s)

—

Not configured

CNAME

1 record(s)

;; communications error to 69.64.44.20#53: timed out

MX

3 record(s)

;; communications error to 69.64.44.20#53: timed out
5 mx-nwpu-edu-cn.icoremail.net.
10 mailgw.nwpu.edu.cn.

TXT

3 record(s)

"qqmail-site-verification=1d4beb28a1720d79c0e9ac71827a731f2bd2e789e83"
"MS=E87247DC21BB002631C161294996188538CD77BA"
"v=spf1 ip4:202.117.80.4 ip4:202.117.80.121 ip4:202.117.80.74 ip4:202.117.80.75 a:hwp1.icoremail.net include:spf.icoremail.net -all"

NS

4 record(s)

dns2.nwpu.edu.cn.
dns1.nwpu.edu.cn.
dns3.nwpu.edu.cn.
dns.nwpu.edu.cn.

SOA

5 record(s)

;; communications error to 69.64.44.20#53: timed out
;; communications error to 69.64.44.50#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.22.04.4-Ubuntu <<>> nwpu.edu.cn SOA +short +time=1 +tries=1
;; global options: +cmd
;; no servers could be reached

CAA

1 record(s)

;; communications error to 69.64.44.20#53: timed out

DS

0 record(s)

—

Not configured

DNSKEY

5 record(s)

;; communications error to 69.64.44.20#53: timed out
;; communications error to 69.64.44.50#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.22.04.4-Ubuntu <<>> nwpu.edu.cn DNSKEY +short +time=1 +tries=1
;; global options: +cmd
;; no servers could be reached

RRSIG

0 record(s)

—

Not configured

NSEC

5 record(s)

;; communications error to 69.64.44.20#53: timed out
;; communications error to 69.64.44.50#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.22.04.4-Ubuntu <<>> nwpu.edu.cn NSEC +short +time=1 +tries=1
;; global options: +cmd
;; no servers could be reached

NSEC3

5 record(s)

;; communications error to 69.64.44.20#53: timed out
;; communications error to 69.64.44.50#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.22.04.4-Ubuntu <<>> nwpu.edu.cn NSEC3 +short +time=1 +tries=1
;; global options: +cmd
;; no servers could be reached

SRV

1 record(s)

;; communications error to 69.64.44.20#53: timed out

NAPTR

0 record(s)

—

Not configured

TLSA

1 record(s)

;; communications error to 69.64.44.20#53: timed out

SSHFP

5 record(s)

;; communications error to 69.64.44.20#53: timed out
;; communications error to 69.64.44.50#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.22.04.4-Ubuntu <<>> nwpu.edu.cn SSHFP +short +time=1 +tries=1
;; global options: +cmd
;; no servers could be reached

SPF

Configured

v=spf1 ip4:202.117.80.4 ip4:202.117.80.121 ip4:202.117.80.74 ip4:202.117.80.75 a:hwp1.icoremail.net include:spf.icoremail.net -all

DMARC

Configured

v=DMARC1

DKIM

Selector dkim

v=DKIM1

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Description

Final URL

https://nwpu.edu.cn/

HTTP status

412

HTTP

Status

HTTP/1.1 412 Precondition Failed

Final URL

https://nwpu.edu.cn/

Version

Server

******

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

GlobalSign nv-sa

*.nwpu.edu.cn

Valid from

2026-03-12T20:25:03-05:00

Valid until

2027-04-13T20:25:02-05:00

Days remaining

245

Protocol

TLSv1.3

Cipher

TLS_AES_256_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

202.117.80.223, 202.117.80.233

320,75 ms

Cloudflare

1.1.1.1

202.117.80.223, 202.117.80.233

269,40 ms

Quad9

9.9.9.9

202.117.80.223, 202.117.80.233

1.735,18 ms

OpenDNS

208.67.222.222

202.117.80.223, 202.117.80.233

877,46 ms

AdGuard

94.140.14.14

202.117.80.223, 202.117.80.233

427,04 ms

IP, geolocation and ASNAssociated network information

202.117.80.233

No data

success

country

region

city

asn

organization

isp

202.117.80.223

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

out

Port 25: Closed/unreachable - 2.4 ms - 
Port 465: Closed/unreachable - 2.2 ms - 
Port 587: Closed/unreachable - 8.5 ms -

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