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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
85
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 3 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.

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.elsevier.com/
200https://elsevier.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://elsevier.com/ → https://elsevier.com:443/

Consistent

B
TLS Certificate Expiry & Recommendations
296 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

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

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • 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
3 A records, 470 ms lookup
PASS
3 A records, 470 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 54.195.96.253, 34.243.46.252, 52.212.180.87
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: ns3.reedelsevier.com, ns2.reedelsevier.com, ns1.reedelsevier.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 (470 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 470 ms
A54.195.96.253, 34.243.46.252, 52.212.180.87
AAAA—
CNAME—
NSns3.reedelsevier.com, ns2.reedelsevier.com, ns1.reedelsevier.com
MX
10 elsevier-com.mail.protection.outlook.com
TXT
ca3-8ad88a788c01466d92464ada1c2fca6a
flexera-domain-verification-tisiekwcozxmsofz
Vj9baVLKjQA5ZcMO116wO2VKgYDV3E7daWisFbujzWGJgusztlLlU1BkA92aPpVSSc2P1CjTp2wmb+xO...
onetrust-domain-verification=6d0206e85a3e4a80b43add3746ddfff0
mongodb-site-verification=J4KQCNTkBvrV5wUfWDONHpPKTC3gFrCG
atlassian-domain-verification=2ckcJUmjEfh8TAauQPrWb9eLXpM1UyNHPk+6SmzC3X0tqBzJKZ...
mentimeter-349658f6-480e-4763-821e-b47ae35d0e61
ca3-4e0e019d33af4e82a84df82e62568d4d
webexdomainverification.=c43e43a4-af48-4617-9fd6-73dc0e4a81cd
explore.elsevier.com,fastly-domain-delegation-00472664-2025-07-22
canva-site-verification=imZWSWaqf3-Km9WUCaP8Eg
work-accounts-domain-verification=6unM21UbabCb9oJ0x63pgczuufWBKN
pardot1009922=bedeac24d52ab05fd97a680741ca50bd2bccfc9881998ee616129be47c27e25a
proxy-ssl.webflow.com
_globalsign-domain-verification=q6Ub2HC-iHj5YYgtCF3pc9W-PsNUiZXUS4fhYg-n31
cloudhealth=fe1a6f0f-d33c-405a-b701-7ebf1650239d
webexdomainverification.=0bfe09d8-bb75-412c-a80b-7a7f44e68e4b
google-site-verification=yWBdA_kdDUGyv8b7KlXqnycz-7vLIrNLtbnCZTh8M14
miro-verification=edd5a54fc20add96505c5c718975977b28f370a9
ZOOM_verify_QUhGAoG3QcWg0JPH4Po2kw
sending_domain532943=242f05728acafb3461734e404de67fc8f28860bba46ecc0d17170feec61...
MS=ms78250175
google-site-verification=oFGpHeOSyBTvESNwn6_By-kP0OSSQoF00EHelveyMVo
pardot716563=e07ec6ae053c53b053b34601f4784c57d6ffcc709bcb63f1274000e5d25970f0
astro-domain-verification=cm4ifz27a0t1c01jmx30j1il5
apple-domain-verification=odC4tPPBA9tfwRYZ
atlassian-domain-verification=gSPRQKiMCzpgMh3R3u3SVeAthArQhjZyu6mexH1EICHVdvhd+m...
atlassian-domain-verification=KHmLon151O7kZoQIVVmLOJxVhxAFjgVIcXm7+fT6CEeCp2R5pa...
dell-technologies-domain-verification=elsevier.com_d4af407f-5b6a-4ec9-ac1c-fc4b2...
webexdomainverification.=96e50b81-a860-4869-950c-a88d03a437d5
pendo-domain-verification=ad85bc9a-a9eb-4e41-8bc7-885147cdc74b
insomnia-validation=2373153f9c4a425abba0de7a0ee45d2bc7c1f54134d2502aa0319f53b904...
elevenlabs=3mgk-rXVn-_sLQw5xGFdc6rS1MIT8dBiZtye8xzLID8
smartsheet-site-validation=MqNGDSRiLWs1zJiGHIF6_nZHNgL5QefU
prodpad-domain-verification=RmOsYPF+QwTlTd7FY4gXMrdPwCuzeU0KNqKWhzvNTyo=
anthropic-domain-verification-zf5tex=G0rs3lVnLSk1rMsL8yVybeAHN
adobe-idp-site-verification=fd4fae74b683e6e22ef9b491871ae9f0faf7856b8a8588d267e2...
stripe-verification=9FCE4112EB787CD5C093D21440A26AAADA8795CC5952283905D4FE0EC3D3...
onetrust-domain-verification=e7882b364f1b4d35b4e1fd998e3d325f
docusign=03cc2f9a-2d0c-447d-a53e-3c338663a134
ca3-f93fbb4c05f94c1697ad2b51fe0b2bc8
429467795-12796420
canva-site-verification=TFg-WBaiAzAnuVe3NQWd5w
SPF v=spf1 exists:%{i}._i.%{d}._d.espf.agari-dns.net include:%{d}.33.spf-protect.aga...
CAALookup not available with standard resolver
Resolved in 470 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.

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
1 redirect(s), 547 ms total
PASS
1 redirect(s), 547 ms total
Info::
Single redirect
Got: https://elsevier.com → https://www.elsevier.com/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 547 ms total
Got: 547 ms

https://elsevier.com

158 ms · HTTP/1.1

301

https://www.elsevier.com/

389 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://elsevier.com301158 msHTTP/1.1gunicorn
2https://www.elsevier.com/200389 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 17 URLs
PASS
robots.txt present, sitemap with 17 URLs
Info::
robots.txt is present
Got: 490 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 17 entries
Info::
Sitemap index with 17 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 490 B Sitemaps referenced 1 User-agents Sogou web spider/4.0, Xenu Link Sleuth/1.3.8, discoverybot/2.0, YoudaoBot/1.0, Sogou web spider/3.0, *, FAST Enterprise Crawler 6 / Scirus, innosense/Nutch-1.0 Blocking No — crawling allowed
# robots.txt file for https://www.elsevier.com

# Disallow
User-agent: FAST Enterprise Crawler 6 / Scirus
Disallow: /

User-agent: innosense/Nutch-1.0
Disallow: /

User-agent: Sogou web spider/4.0
Disallow: /

User-agent: Xenu Link Sleuth/1.3.8
Disallow: /

User-agent: discoverybot/2.0
Disallow: /

User-agent: YoudaoBot/1.0
Disallow: /

User-agent: Sogou web spider/3.0
Disallow: /
    

# Allow
User-agent: *
Allow: /
    
# Sitemaps
Sitemap: https://www.elsevier.com/sitemaps/index.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 17 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
elsevier.com — via SafeNames Ltd., 33 years, 3 months old, hosted on AWS
PASS
elsevier.com — via SafeNames Ltd., 33 years, 3 months old, hosted on AWS
Info::
Domain registered until Jul 1, 2031 (5 years, 3 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: AWS
Got: AS16509
Domain expiry

1841 days

July 1, 2031

SSL certificate

296 days

Issued by Amazon

Domain age

33 years, 3 months

Registered July 2, 1993

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

54.195.96.253

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 July 2, 1993 (33 years, 3 months ago)
Expires July 1, 2031 (5 years, 3 months)
Last Updated October 14, 2025
Name Servers ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com
DNSSEC Not enabled
Hosting
IP Address 54.195.96.253
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
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 170 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
28 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
35 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
70 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
170 ms
Total Time Total request time from DNS lookup through full response.
170 ms

Connection waterfall

DNS Lookup 28 ms TCP Connect 35 ms TLS Handshake 70 ms Server Processing 38 ms Content Transfer 0 ms
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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