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74
Total
70
DNS
70
Email
81
Security
20
Network
100
Availability
Domainzdnet.co.kr
IPv41
IPv60
MX records1
StatusActive
Domain technical report

IT세상을 바꾸는 힘 지디넷코리아

zdnet.co.kr

국가대표 테크미디어 지디넷코리아

Generated: 2026-08-11T01:52:07-05:00 · Cached result

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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.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
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

177 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers16 / 35 pts · Security

4 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 connectivity0 / 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)
211.43.191.215

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 spam.zdnet.co.kr.

TXT

4 record(s)
"google-site-verification=e0QUzw13-OJL9CAXAISk-EqTw3BLf6iEVa4DOe_NQa0"
"worksmobile.certification.qwi8w54g7eumdcrgoc.8wbetqwt9lkbml.2evpliehh"
"mailer.domain.verification=HerqbVouaeeRkZ5ZVYQ2r1B95UrY9O"
"v=spf1 ip4:211.43.191.155 ip4:211.43.191.157 ip4:211.43.191.170 ip4:211.43.191.181 ip4:211.43.191.182 ip4:211.43.191.220 ip4:211.43.191.221 ip4:211.43.191.222 ip4:211.43.191.240 include:email.ncloud.com include:_spf.worksmobile.com ~all"

NS

2 record(s)
ns6.cninet.co.kr.
ns5.cninet.co.kr.

SOA

1 record(s)
ns5.cninet.co.kr. hostmaster.cninet.co.kr. 15101400 86400 7200 3600000 28800

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 ip4:211.43.191.155 ip4:211.43.191.157 ip4:211.43.191.170 ip4:211.43.191.181 ip4:211.43.191.182 ip4:211.43.191.220 ip4:211.43.191.221 ip4:211.43.191.222 ip4:211.43.191.240 include:email.ncloud.com include:_spf.worksmobile.com ~all

DMARC

Configured
v=DMARC1; p=none; rua=mailto:postmaster@zdnet.co.kr

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
IT세상을 바꾸는 힘 지디넷코리아
Description
국가대표 테크미디어 지디넷코리아
Final URL
https://zdnet.co.kr/
HTTP status
200

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://zdnet.co.kr/
Version
2
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Sectigo Limited
CN
*.zdnet.co.kr
Valid from
2026-07-20T19:00:00-05:00
Valid until
2027-02-04T17:59:59-06:00
Days remaining
177
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

4 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
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
211.43.191.215
41,00 ms
Cloudflare
1.1.1.1
211.43.191.215
620,87 ms
Quad9
9.9.9.9
211.43.191.215
1.029,28 ms
OpenDNS
208.67.222.222
211.43.191.215
590,85 ms
AdGuard
94.140.14.14
211.43.191.215
692,57 ms

IP, geolocation and ASNAssociated network information

211.43.191.215

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

spam.zdnet.co.kr

Port 25: Closed/unreachable - 216 ms - 
Port 465: Closed/unreachable - 4015.9 ms - 
Port 587: Closed/unreachable - 4020.8 ms -

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