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https://koreaherald.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
5
PASS
3
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
3 PASS 5 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

B
Redirect Chain
1 redirect(s), 1943 ms total
REVIEW
1 redirect(s), 1943 ms total
Info::
Single redirect
Got: https://koreaherald.com → https://www.koreaherald.com/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1943 ms total
Got: 1943 ms

https://koreaherald.com

779 ms · HTTP/1.1

301

https://www.koreaherald.com/

1164 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://koreaherald.com301779 msHTTP/1.1nginx
2https://www.koreaherald.com/2001164 msHTTP/1.1nginx

See the visual redirect chain in the HTTP Probe tab →

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.koreaherald.com/
200https://koreaherald.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://koreaherald.com/ → https://www.koreaherald.com/

Consistent

B
HTTP Probe Timing
Total 1125 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
301 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
272 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
274 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
1.12 s
Total Time Total request time from DNS lookup through full response.
1.13 s

Connection waterfall

DNS Lookup 301 ms TCP Connect 272 ms TLS Handshake 274 ms Server Processing 277 ms Content Transfer 0 ms
B
TLS Certificate Expiry & Recommendations
296 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

296
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A
DNS Records
1 A records, 328 ms lookup
PASS
1 A records, 328 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 223.130.159.95
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: ns1-1.ns-ncloud.com, ns1-2.ns-ncloud.com
Info::
1 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Warning::
DNS resolution is slow (328 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 328 ms
A223.130.159.95
AAAA—
CNAME—
NSns1-1.ns-ncloud.com, ns1-2.ns-ncloud.com
MX
10 mail.koreaherald.com
TXT
SPF v=spf1 ip4:223.130.132.228 ip4:211.200.28.40 include:spf.tmes.trendmicro.com ~al...
google-site-verification=xaAzN0gUSpnkXBFFI-j6S_l69IPVCmX8Flx_Sq3LuK4
CAALookup not available with standard resolver
Resolved in 328 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Why this matters

DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.

Source: DNS performance benchmarks

A+
Crawlability
robots.txt present, sitemap with 7 URLs
PASS
robots.txt present, sitemap with 7 URLs
Info::
robots.txt is present
Got: 986 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 7 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 986 B Sitemaps referenced 14 User-agents * Blocking No — crawling allowed
User-agent: *

Allow: /


User-agent: *

Disallow: /_TP/

Disallow: /_CP/

Disallow: /_CT/

Disallow: /PRnewswire

Disallow: /search


Sitemap: https://www.koreaherald.com/portal/google/sectionsitemap

Sitemap: https://www.koreaherald.com/sitemap/latest-articles


Sitemap: https://www.koreaherald.com/sitemap/articles/2026

Sitemap: https://www.koreaherald.com/sitemap/articles/2025

Sitemap: https://www.koreaherald.com/sitemap/articles/2024

Sitemap: https://www.koreaherald.com/sitemap/articles/2023

Sitemap: https://www.koreaherald.com/sitemap/articles/2022

Sitemap: https://www.koreaherald.com/sitemap/articles/2021

Sitemap: https://www.koreaherald.com/sitemap/articles/2020

Sitemap: https://www.koreaherald.com/sitemap/articles/2019

Sitemap: https://www.koreaherald.com/sitemap/articles/2018

Sitemap: https://www.koreaherald.com/sitemap/articles/2017

Sitemap: https://www.koreaherald.com/sitemap/articles/2016

Sitemap: https://www.koreaherald.com/sitemap/articles/2015
sitemap.xml 200 OK
Type URL Set URLs 7 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
koreaherald.com — via Whois Corp., 27 years, 9 months old, hosted on NBPAP-AS-AP NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG
PASS
koreaherald.com — via Whois Corp., 27 years, 9 months old, hosted on NBPAP-AS-AP NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG
Info::
Domain registered until Nov 24, 2027 (1 years, 7 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: Whois Corp.
Warning::
Registrar lock is NOT enabled
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Info::
Hosting: NBPAP-AS-AP NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG
Got: AS135354
Domain expiry

526 days

November 24, 2027

SSL certificate

296 days

Issued by Sectigo Limited

Domain age

27 years, 9 months

Registered November 25, 1998

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

NBPAP-AS-AP NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG

ASN AS135354

223.130.159.95

Registrar

Whois Corp.

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar Whois Corp.
Created November 25, 1998 (27 years, 9 months ago)
Expires November 24, 2027 (1 years, 7 months)
Last Updated January 1, 2026
Name Servers ns1-1.ns-ncloud.com, ns1-2.ns-ncloud.com
DNSSEC Not enabled
Hosting
IP Address 223.130.159.95
ASN AS135354 (NBPAP-AS-AP NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG)
Provider NBPAP-AS-AP NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG
Data source: rdap (0.4s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.

Learn more ▾

DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.

Source: ICANN / RFC 4033

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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