Skip to content
https://vnexpress.net

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
2
PASS
5
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
5 PASS 2 REVIEW 2 FIX
D
HTTP Probe Timing
Action
Total 2151 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
FIX
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
324 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
184 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
187 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
895 ms
Total Time Total request time from DNS lookup through full response.
2.15 s

Connection waterfall

DNS Lookup 324 ms TCP Connect 184 ms TLS Handshake 187 ms Server Processing 200 ms Content Transfer 1.26 s
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.

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
TLS Certificate Expiry & Recommendations
135 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

135
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
A
DNS Records
1 A records, 342 ms lookup
PASS
1 A records, 342 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::
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 (342 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 342 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=uKht_cnvjB6wYf1COAMBrbtGqHuR6P0Y_uiRZ3mB19
google-site-verification=9WuepOadCAyPj6v80pTL2i9e8T3r9i6XP6XNsNaqDAw
SPF v=spf1 include:spf.protection.outlook.com include:_spf.google.com include:spf.ma...
_globalsign-domain-verification=6kv26slhFHkTeg1y2IJlaaU_3lOwgr-x9I8TKwZ5fS
_globalsign-domain-verification=UXESoXZAlVTe77KzoI7ru1s210UisDtmsXBRiv4YZu
google-site-verification=9l1kiLmHmqkUC82EVtzTQQza2ipNDpGSM2i66Sp66v4
CAALookup not available with standard resolver
Resolved in 342 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+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://vnexpress.net

https://vnexpress.net

841 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://vnexpress.net200841 msHTTP/1.1vne-qt-fe-lv1-other-3
A+
Crawlability
robots.txt present, sitemap with 69 URLs
PASS
robots.txt present, sitemap with 69 URLs
Info::
robots.txt is present
Got: 2402 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 69 entries
Info::
Sitemap index with 69 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2402 B Sitemaps referenced 2 User-agents EchoboxBot, omgilibot, PerplexityBot, Scrapy, Bytespider, Baiduspider, Meta-WebIndexer, anthropic-ai, AwarioSmartBot, Claude-User, DataForSeoBot, FacebookBot, YouBot, DuckAssistBot, GPTBot, meta-externalfetcher, Perplexity-User, TaraGroup Intelligent Bot, AliyunSecBot, AudigentAdBot, AwarioRssBot, magpie-crawler, news-please, OAI-SearchBot, Google-CloudVertexBot, Jetslide, NewsNow, quillbot.com, Applebot-Extended, archive.org_bot, cohere-ai, ImagesiftBot, *, meta-externalagent, peer39_crawler/1.0, Timpibot, Bingbot, ClaudeBot, CCBot, SeznamHomepageCrawler, Claude-SearchBot, Google-Extended, ChatGPT-User, AmazonBot, Diffbot, Slurp, Meta-ExternalAgent, meta-webindexer/1.1, peer39_crawler, BLEXBot, omgili, Quora-Bot, SeekrBot, Claude-Web, Meta-ExternalFetcher, Poseidon Research Crawler, ViennaTinyBot, FriendlyCrawler, MyCentralAIScraperBot, TurnitinBot Blocking No — crawling allowed
User-agent: *
Allow: /
Allow: /ads.txt
Disallow: /.well-known/amphtml/apikey.pub
Sitemap: https://vnexpress.net/sitemap.xml
Sitemap: https://vnexpress.net/google-news-sitemap.xml

User-agent: AliyunSecBot
Disallow: /

User-agent: AmazonBot
Disallow: /wirecutter/

User-agent: anthropic-ai
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: archive.org_bot
Disallow: /

User-agent: AudigentAdBot
Disallow: /

User-agent: AwarioRssBot
User-agent: AwarioSmartBot
Disallow: /

User-agent: BLEXBot
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ChatGPT-User
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Claude-SearchBot
Disallow: /

User-agent: Claude-User
Disallow: /

User-agent: Claude-Web
Disallow: /

User-agent: cohere-ai
Disallow: /

User-agent: DataForSeoBot
Disallow: /

User-agent: Diffbot
Disallow: /

User-agent: DuckAssistBot
Disallow: /

User-agent: EchoboxBot
Disallow: /

User-agent: FacebookBot
Disallow: /

User-agent: FriendlyCrawler
Disallow: /

User-agent: Baiduspider
Disallow: /

User-agent: Bingbot
Disallow: /

User-agent: Slurp
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: ImagesiftBot
Disallow: /

User-agent: Jetslide
Disallow: /

User-agent: magpie-crawler
Disallow: /

User-agent: Meta-ExternalAgent
User-agent: meta-externalagent
Disallow: /

User-agent: Meta-ExternalFetcher
User-agent: meta-externalfetcher
Disallow: /

User-agent: Meta-WebIndexer
User-agent: meta-webindexer/1.1
Disallow: /

User-agent: MyCentralAIScraperBot
Disallow: /

User-agent: NewsNow
Disallow: /

User-agent: news-please
Disallow: /

User-agent: OAI-SearchBot
Disallow: /

User-agent: omgili
Disallow: /

User-agent: omgilibot
Disallow: /

User-agent: peer39_crawler
User-agent: peer39_crawler/1.0
Disallow: /

User-agent: PerplexityBot
Disallow: /

User-agent: Perplexity-User
Disallow: /

User-agent: Poseidon Research Crawler
Disallow: /

User-agent: quillbot.com
Disallow: /

User-agent: Quora-Bot
Disallow: /

User-agent: Scrapy
Disallow: /

User-agent: SeekrBot
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: Google-Extended
Disallow: /

User-agent: Google-CloudVertexBot
Disallow: /
sitemap.xml 200 OK
Type Sitemap Index URLs 69 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 301-redirects to HTTPS

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 old, hosted on FPTONLINE-AS-VN FPT Online JSC, VN
PASS
vnexpress.net — via Register.com - Network Solutions, LLC, 26 years old, hosted on FPTONLINE-AS-VN FPT Online JSC, VN
Info::
Domain registered until Aug 15, 2034 (8 years, 5 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: 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

2983 days

August 15, 2034

SSL certificate

135 days

Issued by GlobalSign nv-sa

Domain age

26 years

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 ago)
Expires August 15, 2034 (8 years, 5 months)
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 (0.4s)

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.

Send Feedback