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Total

DNS

Email

Security

Network

Availability

Domaincsc.edu.cn

IPv40

IPv60

MX records3

StatusActive

Domain technical report

csc.edu.cn

Generated: 2026-08-10T06:22:17-05:00 · Cached result

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IPv40

IPv60

MX3

NS4

DiagnosticsMain findings and recommendations

IPv4 (A)0 / 30 pts · Dns

0 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 chain15 / 15 pts · Dns

DS and DNSKEY detected.

CAA policy0 / 5 pts · Dns

Certificate authority restriction.

DNS propagation0 / 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 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 DNS0 / 30 pts · Network

PTR not detected.

IPv4 diversity0 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

DNS resolution0 / 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

0 record(s)

—

Not configured

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

3 record(s)

;; communications error to 69.64.44.20#53: timed out
10 hzmx02.mxmail.netease.com.
5 hzmx01.mxmail.netease.com.

TXT

1 record(s)

"v=spf1 include:spf.163.com -all"

NS

4 record(s)

dns2.csc.edu.cn.
ns2.cernet.net.
dns.csc.edu.cn.
ns3.cernet.net.

SOA

1 record(s)

ns2.net.edu.cn. hostmaster.dns.edu.cn. 2023062911 7200 1800 604800 600

CAA

0 record(s)

—

Not configured

DS

1 record(s)

38296 8 2 E9D9B19D2CB4E8C3B3503FC9D4B31072664723A4CA8161F1C20E244D 9F4E76C2

DNSKEY

3 record(s)

;; communications error to 69.64.44.20#53: timed out
257 3 8 AwEAAc0qmE7Vkgf9AeQdior0iaGGUwfEabRmCry4bBZLO/npR1YPBuRU 7IQVb54phNpvftVGKoSy5UQOrDk+E27KjoKX5Ed72Ago59woREtsw3Ql pdohHch2ccvZUm69WxpsczgJPNDsxvpTH/Ooi2yzwtRWYDG9xtKsoga+ FFLeKI5tbrBd1M91LeTAQUIjh63uxluRMaPWiPAxHz9rqPkY4gFUbg/P OakDxDdM6zyQntHToNkbZj1nbYss1GTxQ9i7IGX9yWYRNeFIrXnBdWYS rmufAuFEaImug0O+uRbZ6uzTTMueCkZxAHSVgr0vf2Uy7JvpILsyo2HG QSCiYLotk4U=
256 3 8 AwEAAcWvuXcA1lDWdo6e6Pr57QVuNETZSY7bKku/rykGxqukVw1khygW FE6KMmwzZ23jCh1voUxqgD2dd4Kivxhhhnc/8G/IzESfRnULgjV9vcYY 1ug1QTziwAttrXSz299eakoAtgd08M1lM+i/+df2diMgtQroWa/7snHG DLEsWf2fnWrxvBmB8BihezOlGXUdsCN3ZwoARWpGKFdoioKTmBb6N5mq fwADzPnvY3K+UYBz12mRf4xfRd8ZDcGdQSBReA6XJUEZpOwiIc2wY+oP v5IvgGD3LNmWcJdlVpOGq1OoIX9ckn+QQuL5c0FAe4gYAsGAh4FVx2Gq +U8WueniiRc=

RRSIG

5 record(s)

DNSKEY 8 3 7200 20260816161105 20260802153735 38296 csc.edu.cn. dUChbsDDfzJodXLjWnivDN8ujpMR50eGSdyoFJwhT8KBXaSqdDZNEUIb jRRKLNb26W2C0HAUe52DCt0JdLT8Spzv3odTvStpgeNmKBt7JbCGdbor H2CBloTPlpWhrGudBdUyQjO+/hAWInpjtFtvWOweC6AMZfeSGyPaFAv6 Ui9uEA4LaIEoZsnll+LBgFlI7PdCMHFH8tHJUs+CbIWKBgUB/4tW/BN6 mU1gX5dQTfLdFiSTFGNCgC7ylKYj3tRppPctr5Wn2GFBeDrMclCF2UXA nHYQVIAv7oLBV5nXQNnFs5qRUoko6Rg7CdYcy574MgbPGgoHbTD9LMss apb7eQ==
SOA 8 3 86400 20260823145848 20260809135848 57793 csc.edu.cn. f/TA4nLx4ivAqclqr0PgD0rgM0xhGMN3SzwMxyxzD9OfgFzIlmIYt4Bn 2VmqKGCa+ZFlvRk/pzvDb24iROYlTny+RsbBHkb1gyJ7hWftIzIjI3SU eD9yyYjDFs7MpQ0dZCSI7snlp0vmY/rB2uMCG8S7OiPaDT1hcePNbqVt GcOKoCfCBKEauoozR/paybUYEkUZdDA10R1hW3sClWIFh5BbS8icgCn5 IQfu+DBhu6UJsuNPg6DcM+23KE0GO3rsQYTQEttgrXiMGZp2WhgtJDW+ bWVOezyr+9fygsL92T7MZGkhJQYpqZuhTJtY0czkWPNW8CJhx1Prfuk+ jHwP+w==
NS 8 3 86400 20260823103348 20260809094921 57793 csc.edu.cn. PHok8Ah04NLh0pR6Ec/WrHBmQsWQh+VIzvcInGdDtn8EqLsBUoFxBXPy hq1sMrs3sxlaHKxbsg5tTuVgDlxPgyv1CxKbvU5pcF0dq8oyeOwxnF5l cdA9seAnt5PV10qNNlXdEAwzT/ppwvhY8duaaRozfYtHES3PaL3GFREK FaeNI+dH2D/fZZv2OXbVw6/iKrElgHXkjqXvQDOnLyMOsUJGo3xloz6o R2v8eVu8qJyLd/Hww2zVFPD/91ReEaAmqmt+YFB0qmGT6v0A1TOk868Z QjHfIQuRDi2EaZQwmL9WCD+OmPg7EqU5fJ34z8M2GLih002mJVN0XkeK RVuU8g==
MX 8 3 86400 20260823103348 20260809094921 57793 csc.edu.cn. PWi6jqKtG0DqRyz02/VVSpsY6E9gWGGrCGUyiVbKMY12a8yZITM9uxKm P7oI0g72LSe+v7sKg1dAXqOigxKtyJ3f3TWAnhhnZrcWGrQ1Pi1JSFAo moGtQln3xyQ9jk7dy/MRnU6Pkva9JCzSmg5Olbk00f6kSDj9CySnKwtO 6wTZc1ITSsLJOuF4eomVdL7lZoNhWrLVN5yxkaLLxP6nbb7RML3v2uZd 21HQAOOud/CZV7cUSgNALaYN8uCIx2Ua6w1D47wbwSMl7n3Ge+5LwTuG 80N3fJD/fsqfLnfaNCueOpx1gh6lZdmUA5UnlHm95rCvc2Pwf+83ldcX WMqGaA==
DS 8 3 172800 20260823051445 20260809042932 44583 edu.cn. dwRmFutyn2Q8A8b5zHPTjfvYLXL6LvKsb87KSZyZFm5p8BcU7+PfLP2I XBpy7OuimeQiDiZARbRkt1BIM9qutT4BSNCCRRWE6n3dzFhjxAp4kZ89 ljgQTNfZ32oiXc6BtGl5AkbK46eoUIwHltBM70EDh+GQ1zKhwH/I0KJk xHkXX0d/zHidjkT5HnNcV+aQukNtP/d1PbAMEk8T0a4Xc9EBxkR6BtPP Zhsq7ELt78qd628FWCFVwrM2SKJM8BzEolct6qi/nj6Sb0kiRtHvYSo1 B/RKTC0fNxAX4ETo4btBuYSyIVBvxr8s6omLBlgC/Og8QLH2+sl8bKvZ YVnFzw==

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 include:spf.163.com -all

DMARC

Configured

v=DMARC1; p=none; fo=1; ruf=mailto:dmarc@qiye.163.com; rua=mailto:dmarc_report@qiye.163.com

DKIM

Selector default

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqWVY1cMmNfX9ikrC5sF6AYWWBQpSodH7XMRRgZ8UqlHeCPeEz2+VTQu5NM9lM/1AhVXYJJQazCeaFueyCgrWwTrfcqFy5TC1/aepXjW5OLENiccgssHKPuZ6PFUuKxg/BybIC9PQbvUcFaaZWD9zyr8kWdBVa1THxWjufDj/AJmGlBKKVMvO1YhkEK6vCFEM2w+hEQtmFc6ZbuLB5NE5r9drwt1x82gqsbY3PYajMb1PbbZgfQqO8ix+lVvADKUgfh5Ck9TsBccU9iOgv0HoL4F2ZlbRyXoliYHCqUB2iwWEIxaRqCs5/F+/PEpjggUugDOnndMbbYxemli8j1TjvQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

No data

Title

Description

Final URL

https://csc.edu.cn/

HTTP status

HTTP

Status

Final URL

https://csc.edu.cn/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Unavailable

Available

Issuer

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

Review

Differences detected

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

381,55 ms

Cloudflare

1.1.1.1

46,20 ms

Quad9

9.9.9.9

827,44 ms

OpenDNS

208.67.222.222

2.448,82 ms

AdGuard

94.140.14.14

1.814,23 ms

IP, geolocation and ASNAssociated network information

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 - 2.9 ms - 
Port 465: Closed/unreachable - 1.3 ms - 
Port 587: Closed/unreachable - 1.2 ms -

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