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https://vnexpress.net

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
8
PASS
8
INFO
0
Probed from Madrid, Spain
200 OK
Checks
17
8 PASS 8 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
DNSSEC
Unsigned (DNSSEC not deployed)
REVIEW
Unsigned (DNSSEC not deployed)
Info::
DNSSEC is not deployed
The zone is not DNSSEC-signed. Users on validating resolvers (Cloudflare 1.1.1.1, Quad9 9.9.9.9, growing default in mobile resolvers) get no protection against DNS spoofing for this domain. Most registrars now offer DNSSEC at a single click; consider enabling it for sites where authenticity matters (banking, healthcare, government).
B
CAA Records
No CAA records (any CA may issue certificates)
REVIEW
No CAA records (any CA may issue certificates)
Info::
No CAA records published
Without CAA records, any publicly-trusted CA can issue certificates for this domain. Adding a CAA record (`yourdomain. IN CAA 0 issue "letsencrypt.org"`) restricts issuance to CAs you authorize. Required by CAB Forum baseline since 2017; the default of 'any CA' is widely supported but is the broader attack surface for issuance fraud.
C
Reverse DNS
Action
0/1 IPs match cert SAN
REVIEW
0/1 IPs match cert SAN
Info::
PTR lookup failed for 111.65.250.2: lookup 111.65.250.2: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
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

C
HTTP Probe Timing
Action
Total 1925 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
361 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
306 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
311 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
1.30 s
Total Time Total request time from DNS lookup through full response.
1.93 s

Connection waterfall

DNS Lookup 361 ms TCP Connect 306 ms TLS Handshake 311 ms Server Processing 327 ms Content Transfer 621 ms
B
TLS Certificate Expiry & Recommendations
180 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

180
days left
0d 30d 60d 90d+

Recommended actions

  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • 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
B
CDN Cache Observability
No CDN cache-status headers in the response
REVIEW
No CDN cache-status headers in the response
Info::
No CDN cache-status headers in the response
Without an X-Cache / CF-Cache-Status / X-Vercel-Cache / Age header, you can't tell from outside whether a request hit the cache or went to origin. Operationally important: enables debugging stale-content reports and verifying cache rules. Most managed CDN platforms emit at least one of these by default; absence often means the platform's diagnostic headers are stripped at an upstream proxy.
B
Operational Status Page
No status page link detected
REVIEW
No status page link detected
Info::
No operational status page link detected
Status pages communicate planned maintenance and incidents to users -- a hallmark of operationally-mature services. Most SaaS teams publish one via Atlassian Statuspage, Instatus, BetterUptime, or a self-hosted Cachet. Smaller sites legitimately don't need one; flagged as Info, not a failure.
A
DNS Records
1 A records, 373 ms lookup
PASS
1 A records, 373 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 111.65.250.2
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: ns2.fptonline.vn, ns1.fptonline.vn
Info::
3 mail exchanger(s) configured
Info::
SPF record present in TXT
Warning::
DNS resolution is slow (373 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 373 ms
A111.65.250.2
AAAA—
CNAME—
NSns2.fptonline.vn, ns1.fptonline.vn
MX
0 vnexpress-net.mail.protection.outlook.com
10 mailgw01.fpt.com.vn
20 mailgw02.fpt.com.vn
TXT
_globalsign-domain-verification=6kv26slhFHkTeg1y2IJlaaU_3lOwgr-x9I8TKwZ5fS
google-site-verification=9l1kiLmHmqkUC82EVtzTQQza2ipNDpGSM2i66Sp66v4
_globalsign-domain-verification=UXESoXZAlVTe77KzoI7ru1s210UisDtmsXBRiv4YZu
_globalsign-domain-verification=uKht_cnvjB6wYf1COAMBrbtGqHuR6P0Y_uiRZ3mB19
SPF v=spf1 include:spf.protection.outlook.com include:_spf.google.com include:spf.ma...
google-site-verification=9WuepOadCAyPj6v80pTL2i9e8T3r9i6XP6XNsNaqDAw
_globalsign-domain-verification=c6z4d9hYtqBWlCRzQtFhiUB9VC2F7Sg7rd71_WohZz
CAALookup not available with standard resolver
Resolved in 373 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

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+
Subdomain Takeover
No subdomain takeover risk detected
PASS
No subdomain takeover risk detected
Info::
No CNAME record present
A+
Multi-Resolver DNS Speed
Mean 12ms across 3 resolvers (spread 20ms)
PASS
Mean 12ms across 3 resolvers (spread 20ms)
Info::
Quad9: 0ms
Got: 0ms via 9.9.9.9:53
Info::
Cloudflare: 17ms
Got: 17ms via 1.1.1.1:53
Info::
Google: 20ms
Got: 20ms via 8.8.8.8:53
A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://vnexpress.net

https://vnexpress.net

948 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://vnexpress.net200948 msHTTP/1.1vne-qt-fe-lv1-other-1
A+
Crawlability
robots.txt present, sitemap with 9384 URLs
PASS
robots.txt present, sitemap with 9384 URLs
Info::
robots.txt is present
Got: 2094 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 9384 entries
Info::
Sitemap index with 9384 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2094 B Sitemaps referenced 3 User-agents MyCentralAIScraperBot, Claude-SearchBot, BLEXBot, Diffbot, EchoboxBot, quillbot.com, SeznamHomepageCrawler, Google-Extended, news-please, Baiduspider, AmazonBot, archive.org_bot, AwarioRssBot, AwarioSmartBot, DataForSeoBot, Bytespider, OAI-SearchBot, DuckAssistBot, Slurp, Scrapy, Timpibot, YouBot, *, ImagesiftBot, ChatGPT-User, Perplexity-User, AliyunSecBot, FriendlyCrawler, Poseidon Research Crawler, GPTBot, omgili, Claude-User, PerplexityBot, Jetslide, magpie-crawler, ClaudeBot, CCBot, cohere-ai, AudigentAdBot, Quora-Bot, facebookexternalhit, Applebot-Extended, SeekrBot, peer39_crawler/1.0, TaraGroup Intelligent Bot, Claude-Web, omgilibot, anthropic-ai, Bingbot, NewsNow, peer39_crawler, TurnitinBot, ViennaTinyBot, Google-CloudVertexBot Blocking No — crawling allowed
User-agent: *
Allow: /
Allow: /ads.txt

Sitemap: https://vnexpress.net/sitemap.xml
Sitemap: https://vnexpress.net/google-news-sitemap.xml
Sitemap: https://vnexpress.net/images-2026-sitemap.xml

User-agent: GPTBot
Disallow: /
User-agent: ClaudeBot
Disallow: /
User-agent: Claude-Web
Disallow: /
User-agent: Google-Extended
Disallow: /
User-agent: Google-CloudVertexBot
Disallow: /
User-agent: Applebot-Extended
Disallow: /
User-agent: CCBot
Disallow: /
User-agent: Bytespider
Disallow: /
User-agent: cohere-ai
Disallow: /
User-agent: ImagesiftBot
Disallow: /
User-agent: MyCentralAIScraperBot
Disallow: /
User-agent: SeekrBot
Disallow: /
User-agent: omgili
User-agent: omgilibot
Disallow: /
User-agent: news-please
Disallow: /
User-agent: anthropic-ai
Disallow: /

User-agent: OAI-SearchBot
Allow: /
User-agent: ChatGPT-User
Allow: /
User-agent: Claude-SearchBot
Allow: /
User-agent: Claude-User
Allow: /
User-agent: PerplexityBot
Allow: /
User-agent: Perplexity-User
Allow: /
User-agent: DuckAssistBot
Allow: /

User-agent: Bingbot
Allow: /
User-agent: Baiduspider
Allow: /
User-agent: Slurp
Allow: /

User-agent: AliyunSecBot
Disallow: /
User-agent: AmazonBot
Disallow: /
User-agent: archive.org_bot
Disallow: /
User-agent: AudigentAdBot
Disallow: /
User-agent: AwarioRssBot
User-agent: AwarioSmartBot
Disallow: /
User-agent: BLEXBot
Disallow: /
User-agent: DataForSeoBot
Disallow: /
User-agent: Diffbot
Disallow: /
User-agent: EchoboxBot
Disallow: /
User-agent: FriendlyCrawler
Disallow: /
User-agent: Jetslide
Disallow: /
User-agent: magpie-crawler
Disallow: /
User-agent: NewsNow
Disallow: /
User-agent: peer39_crawler
User-agent: peer39_crawler/1.0
Disallow: /
User-agent: Poseidon Research Crawler
Disallow: /
User-agent: quillbot.com
Disallow: /
User-agent: Quora-Bot
Disallow: /
User-agent: Scrapy
Disallow: /
User-agent: SeznamHomepageCrawler
Disallow: /
User-agent: TaraGroup Intelligent Bot
Disallow: /
User-agent: Timpibot
Disallow: /
User-agent: TurnitinBot
Disallow: /
User-agent: ViennaTinyBot
Disallow: /
User-agent: YouBot
Disallow: /

User-agent: facebookexternalhit
Allow: /
sitemap.xml 200 OK
Type Sitemap Index URLs 9384 entries Valid XML Yes
Child Sitemaps:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly redirects to HTTPS permanently
Got: HTTP 301

www / non-www

301https://www.vnexpress.net/
200https://vnexpress.net/

Preferred variant: non-www

HTTP → HTTPS

301http://vnexpress.net/ → https://vnexpress.net/

Consistent

A+
Domain Intelligence
vnexpress.net — via Register.com - Network Solutions, LLC, 26 years, 4 months old, hosted on FPTONLINE-AS-VN - FPT Online JSC, VN
PASS
vnexpress.net — via Register.com - Network Solutions, LLC, 26 years, 4 months old, hosted on FPTONLINE-AS-VN - FPT Online JSC, VN
Info::
Domain registered until Aug 15, 2034 (8 years 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: Register.com - Network Solutions, LLC
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: FPTONLINE-AS-VN - FPT Online JSC, VN
Got: AS45894
Domain expiry

2908 days

August 15, 2034

SSL certificate

180 days

Issued by GlobalSign nv-sa

Domain age

26 years, 4 months

Registered August 15, 2000

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

FPTONLINE-AS-VN - FPT Online JSC, VN

ASN AS45894

111.65.250.2

Registrar

Register.com - Network Solutions, LLC

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 Register.com - Network Solutions, LLC
Created August 15, 2000 (26 years, 4 months ago)
Expires August 15, 2034 (8 years)
Last Updated August 15, 2024
Name Servers ns1.fptonline.vn, ns2.fptonline.vn
DNSSEC Not enabled
Hosting
IP Address 111.65.250.2
ASN AS45894 (FPTONLINE-AS-VN - FPT Online JSC, VN)
Provider FPTONLINE-AS-VN - FPT Online JSC, VN
Data source: rdap (0.5s)

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

A+
Health Check Endpoint
Health endpoint at https://vnexpress.net/api/health (HTTP 200)
PASS
Health endpoint at https://vnexpress.net/api/health (HTTP 200)
Info::
Public health endpoint at https://vnexpress.net/api/health
Got: https://vnexpress.net/api/health
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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