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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
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.degruyterbrill.com/
200https://degruyterbrill.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://degruyterbrill.com/ → https://www.degruyterbrill.com:443/

Consistent

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

Certificate validity

323
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, 47 ms lookup
PASS
3 A records, 47 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 3.124.146.202, 18.184.57.32, 3.71.191.208
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-617.awsdns-13.net, ns-1335.awsdns-38.org, ns-1776.awsdns-30.co.uk, ns-379.awsdns-47.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
Info::
DNS resolution time: 47 ms
Got: 47 ms
A3.124.146.202, 18.184.57.32, 3.71.191.208
AAAA—
CNAME—
NSns-617.awsdns-13.net, ns-1335.awsdns-38.org, ns-1776.awsdns-30.co.uk, ns-379.awsdns-47.com
MX
0 degruyterbrill-com.mail.protection.outlook.com
TXT
google-site-verification=gNm7H6IFd-bS1NidUnGYN85Ux_U1K69sijqk_lgw0Us
pardot1014162=2f0f5d3d553d0bc6fdab09d3d497af4916a6e63aa4fd0138d251f8a1ab979504
atlassian-sending-domain-verification=74292e42-7dcc-4e17-a395-50d6a058051c
google-site-verification=eNdGKC5Tym6G1HPjtNnHUz7r3ibhRR_S6g2uNPGG75M
0ed1fe018a4d5e2550dbd74813a519a03cc85a0e97
pardot1014162=d8bc921bdaef4c455a478b94aa9bc970d57b2c2907f196446cf451496e039282
apple-domain-verification=FFyldro57kZSDwcw
SPF v=spf1 include:spf1.degruyterbrill.com include:spf.protection.outlook.com includ...
atlassian-domain-verification=ECeVQnNbH9cORlOPX+RR1A8fXEyqUKmNlomSjvhJM4laoVgGH0...
sending_domain1014162=f568b41057bcc69e8d764341506e7d5199ef1f801ef3acabe5b472b23d...
brevo-code:e4a546f8c3e623f362b41b54a251a03c
CAALookup not available with standard resolver
Resolved in 47 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
Redirect Chain
1 redirect(s), 334 ms total
PASS
1 redirect(s), 334 ms total
Info::
Single redirect
Got: https://degruyterbrill.com → https://www.degruyterbrill.com:443/ (301)
Info::
WWW normalization redirect

https://degruyterbrill.com

127 ms · HTTP/1.1

301

https://www.degruyterbrill.com:443/

207 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://degruyterbrill.com301127 msHTTP/1.1awselb/2.0
2https://www.degruyterbrill.com:443/200207 msHTTP/1.1CloudFront

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 1702 URLs
PASS
robots.txt present, sitemap with 1702 URLs
Info::
robots.txt is present
Got: 777 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 1702 entries
Info::
Sitemap index with 1702 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 777 B Sitemaps referenced 1 User-agents Omgilibot, *, Google-Extended, GPTBot, CCBot, FacebookBot Blocking No — crawling allowed
User-agent: *
Disallow: /search
Disallow: /search/series/*
Disallow: /search/parent/*
Disallow: /search/summary/products/*
Disallow: /search/keywords/*
Disallow: /seamlessaccess/*

Disallow: /openurl

Disallow: /database/*/search
Disallow: /database/*/browse

Disallow: /login
Disallow: /logout
Disallow: /myProducts
Disallow: /myPublications
Disallow: /myHoldings
Disallow: /contactForm

Sitemap: https://www.degruyterbrill.com/sitemap.xml

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: FacebookBot
Disallow: /

User-agent: Omgilibot
Disallow: /

# De Gruyter expressly reserves the right to use all content for commercial text and data mining within the meaning of Section 44b of the German Copyright Act.
sitemap.xml 200 OK
Type Sitemap Index URLs 1702 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
degruyterbrill.com — via Amazon Registrar, Inc., 2 years, 6 months old, hosted on AWS
PASS
degruyterbrill.com — via Amazon Registrar, Inc., 2 years, 6 months old, hosted on AWS
Info::
Domain registered until Oct 11, 2026 (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: Amazon Registrar, Inc.
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

118 days

October 11, 2026

SSL certificate

323 days

Issued by Amazon

Domain age

2 years, 6 months

Registered October 11, 2023

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

18.184.57.32

Registrar

Amazon Registrar, Inc.

Unlocked 4 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 Amazon Registrar, Inc.
Created October 11, 2023 (2 years, 6 months ago)
Expires October 11, 2026 (5 months)
Last Updated September 6, 2025
Name Servers ns-1335.awsdns-38.org, ns-1776.awsdns-30.co.uk, ns-379.awsdns-47.com, ns-617.awsdns-13.net
DNSSEC Not enabled
Hosting
IP Address 18.184.57.32
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.
45 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
31 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
63 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 45 ms TCP Connect 31 ms TLS Handshake 63 ms Server Processing 31 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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