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69
Total
70
DNS
45
Email
69
Security
50
Network
100
Availability
Domaineol.cn
IPv41
IPv60
MX records1
StatusActive
Domain technical report

教育在线-推动教育前进的力量

eol.cn

“作为中国教育的联结者和赋能者，教育在线致力于成为推动中国教育前行的力量。多年来，教育在线专注教育领域，坚持满足各类教育需求，对接国内外2000余所高校、3000余所高中，覆盖全国30余个省市，发布各类权威的招考、就业、辅导等权威的教育信息，专注于为国内外各大高校、科研院所、教育机构提供从招生服务，到信息化应用服务，以及“智库服务”等为主的多元化教育服务。”

Generated: 2026-08-09T13:22:09-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv60
MX1
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

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

52 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: ipaddr005.cernet.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 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)
202.205.109.5

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 eol-cn.mail.protection.outlook.com.

TXT

1 record(s)
"v=spf1 include:spf.protection.outlook.com -all"

NS

2 record(s)
dns2.resource.edu.cn.
dns1.resource.edu.cn.

SOA

1 record(s)
ns.eol.cn. postmaster.eol.cn. 2026072301 28800 7200 604800 3600

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 include:spf.protection.outlook.com -all

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
教育在线-推动教育前进的力量
Description
“作为中国教育的联结者和赋能者，教育在线致力于成为推动中国教育前行的力量。多年来，教育在线专注教育领域，坚持满足各类教育需求，对接国内外2000余所高校、3000余所高中，覆盖全国30余个省市，发布各类权威的招考、就业、辅导等权威的教育信息，专注于为国内外各大高校、科研院所、教育机构提供从招生服务，到信息化应用服务，以及“智库服务”等为主的多元化教育服务。”
Final URL
https://www.eol.cn/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://www.eol.cn/
Version
3
Server
Apache
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert, Inc.
CN
*.eol.cn
Valid from
2026-03-15T19:00:00-05:00
Valid until
2026-09-30T18:59:59-05:00
Days remaining
52
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

1 active
✓
HSTSImplemented
—
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
202.205.109.5
672,48 ms
Cloudflare
1.1.1.1
202.205.109.5
691,26 ms
Quad9
9.9.9.9
202.205.109.5
299,92 ms
OpenDNS
208.67.222.222
202.205.109.5
542,70 ms
AdGuard
94.140.14.14
202.205.109.5
535,96 ms

IP, geolocation and ASNAssociated network information

202.205.109.5

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

eol-cn.mail.protection.outlook.com

Port 25: Closed/unreachable - 25.3 ms - 
Port 465: Closed/unreachable - 4005.6 ms - 
Port 587: Closed/unreachable - 4027.2 ms -

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