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https://thelancet.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
75
GRADE
C
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Amsterdam, Netherlands
302 Found
Checks
9
6 PASS 2 REVIEW 1 FIX
F
Redirect Chain
Action
5 redirect(s), 3015 ms total
FIX
5 redirect(s), 3015 ms total
Warning::
5 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://thelancet.com
Warning::
Redirect overhead: 3015 ms total
Got: 3015 ms
Info::
Cross-domain redirect detected

https://thelancet.com

250 ms · HTTP/1.1

302

https://id.elsevier.com/as/authorization...

107 ms · HTTP/1.1

302

https://www.thelancet.com/callback?red_u...

1575 ms · HTTP/1.1

302

https://www.thelancet.com/

204 ms · HTTP/1.1

302

https://id.elsevier.com/as/authorization...

98 ms · HTTP/1.1

302

https://www.thelancet.com/callback?red_u...

781 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://thelancet.com302250 msHTTP/1.1cloudflare
2https://id.elsevier.com/as/authorization...302107 msHTTP/1.1cloudflare
3https://www.thelancet.com/callback?red_u...3021575 msHTTP/1.1cloudflare
4https://www.thelancet.com/302204 msHTTP/1.1cloudflare
5https://id.elsevier.com/as/authorization...30298 msHTTP/1.1cloudflare
6https://www.thelancet.com/callback?red_u...302781 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

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
46 days until leaf cert expires — 5 issues to address
REVIEW

Certificate validity

46
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add includeSubDomains to the HSTS directive
  • 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
2 A records, 103 ms lookup
PASS
2 A records, 103 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 172.66.0.112, 162.159.140.114
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: ns3.reedelsevier.com, ns2.reedelsevier.com, ns1.reedelsevier.com
Info::
2 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
Info::
DNS resolution time: 103 ms
Got: 103 ms
A172.66.0.112, 162.159.140.114
AAAA—
CNAME—
NSns3.reedelsevier.com, ns2.reedelsevier.com, ns1.reedelsevier.com
MX
10 thelancet.com.inbound10.mxlogic.net
10 thelancet.com.inbound10.mxlogicmx.net
TXT
_globalsign-domain-verification=VutN-aaycpcJsYMl5SX_N-XNbHxwpl05VFif8Xmuvn
SPF v=spf1 include:3798016.spf10.hubspotemail.net -all
CAALookup not available with standard resolver
Resolved in 103 ms

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.

A
Crawlability
robots.txt present, no sitemap
PASS
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 1495 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
robots.txt references sitemap

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.

Learn more ▾

A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.

Source: sitemaps.org / Google Search Central

robots.txt 200 OK
Size 1495 B Sitemaps referenced 2 User-agents ChatGPT-User, PerplexityBot, Diffbot, meta-externalagent, *, Twitterbot, GPTBot, CCBot, anthropic-ai, iAskBot/1.0, MistralAI-User, YouBot, LinkedInBot, Google-Extended, AI2Bot, Amazonbot, cohere-training-data-crawler, cohere-ai, ClaudeBot, Bytespider, omgili, TimpiBot Blocking No — crawling allowed
Sitemap: https://www.thelancet.com/sitemap-index-1.txt
Sitemap: https://www.thelancet.com/custom_pages.gz

User-agent: *
Disallow: /action
Disallow: /help
Disallow: /search
Disallow: /feedback
Disallow: /rss
Disallow: /action/clickThrough
Disallow: /action/showLogin
Disallow: /page/account-confirmation-thanks
Disallow: /media
Disallow: /medical-research
Disallow: /servlet/linkout
Disallow: /na101/
Disallow: /na101v1/
Disallow: /na102/
Disallow: /doi/mlt/
Disallow: /cms/attachment/92c526c4-ef1f-4065-b12b-ca4ae0f3e84f/gr1*
Disallow: /personalize/addFavoritePublication
Disallow: /pb/widgets/*
Allow: /action/showJournal
Allow: /action/showXml
Allow: /series
Allow: /isbn
Allow: /doi/book
Allow: /.well-known/*

User-agent: Twitterbot
Allow: /

User-agent: LinkedInBot
Allow: /

User-agent: GPTBot
Disallow: /

User-agent: ChatGPT-User
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: PerplexityBot
Disallow: /

User-agent: AI2Bot
Disallow: /

User-agent: Amazonbot
Disallow: /

User-agent: anthropic-ai
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: cohere-training-data-crawler
Disallow: /

User-agent: cohere-ai
Disallow: /

User-agent: Diffbot
Disallow: /

User-agent: iAskBot/1.0
Disallow: /

User-agent: meta-externalagent
Disallow: /

User-agent: MistralAI-User
Disallow: /

User-agent: omgili
Disallow: /

User-agent: TimpiBot
Disallow: /

User-agent: YouBot
Disallow: /

Crawl-delay: 1
sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

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

302https://www.thelancet.com/
200https://thelancet.com/

Preferred variant: non-www

HTTP → HTTPS

301http://thelancet.com/ → https://thelancet.com/

Consistent

A+
Domain Intelligence
thelancet.com — via SafeNames Ltd., 30 years, 6 months old, hosted on Cloudflare
PASS
thelancet.com — via SafeNames Ltd., 30 years, 6 months old, hosted on Cloudflare
Info::
Domain registered until Mar 2, 2027 (10 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: SafeNames Ltd.
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: Cloudflare
Got: AS13335
Domain expiry

231 days

March 2, 2027

SSL certificate

46 days

Issued by Google Trust Services

Domain age

30 years, 6 months

Registered March 1, 1996

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS13335

162.159.140.114

Registrar

SafeNames Ltd.

Unlocked 3 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 SafeNames Ltd.
Created March 1, 1996 (30 years, 6 months ago)
Expires March 2, 2027 (10 months)
Last Updated March 3, 2026
Name Servers ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com
DNSSEC Not enabled
Hosting
IP Address 162.159.140.114
ASN AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.3s)

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+
HTTP Probe Timing
Total 213 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
10 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
1 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
12 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
213 ms
Total Time Total request time from DNS lookup through full response.
214 ms

Connection waterfall

DNS Lookup 10 ms TCP Connect 1 ms TLS Handshake 12 ms Server Processing 190 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: AMS)
Got: cf-ray: 9efe9c258dbdfe96-AMS
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9efe9c258dbdfe96-AMS
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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