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https://intechopen.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
94
GRADE
A
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
6 PASS 2 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
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.intechopen.com/
200https://intechopen.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

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

Consistent

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

Certificate validity

179
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
2 A records, 36 ms lookup
PASS
2 A records, 36 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 35.170.1.201, 52.205.60.203
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2600:1f18:256f:5300:454a:a796:553b:8f42, 2600:1f18:256f:5310:d457:d6d0:544e:e6cb
Info::
4 nameserver(s) configured
Got: ns-1354.awsdns-41.org, ns-869.awsdns-44.net, ns-124.awsdns-15.com, ns-1760.awsdns-28.co.uk
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: 36 ms
Got: 36 ms
A35.170.1.201, 52.205.60.203
AAAA2600:1f18:256f:5300:454a:a796:553b:8f42, 2600:1f18:256f:5310:d457:d6d0:544e:e6cb
CNAME—
NSns-1354.awsdns-41.org, ns-869.awsdns-44.net, ns-124.awsdns-15.com, ns-1760.awsdns-28.co.uk
MX
1 smtp.google.com
TXT
google-site-verification=RCtlP8bS4qdqKDFI9I1CNFRKm0rFmyodx6IpPSKhwuY
google-site-verification=3bIARpYt3JA9siZCzn7K4jKuK4v0VYqKajsrVeaoyjU
Validity-Domain-Verification=hygge20FKQN28X+/UkkIOXhBaII=
firebase=intechopen-4d333
google-site-verification=zgR05Y9ls_g_8JqdHRyhy0a-zqr33kh7e9wWIb5tZ-I
SPF v=spf1 a:publish.intechopen.com include:_spf.google.com include:_spf.salesforce....
google-site-verification=Bat30w9hE0Lv45Ee_wEEix-4OH7LsX8UGUmXRVvInWY
CAALookup not available with standard resolver
Resolved in 36 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), 941 ms total
PASS
1 redirect(s), 941 ms total
Info::
Single redirect
Got: https://intechopen.com → https://www.intechopen.com:443/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 941 ms total
Got: 941 ms

https://intechopen.com

413 ms · HTTP/1.1

301

https://www.intechopen.com:443/

527 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://intechopen.com301413 msHTTP/1.1awselb/2.0
2https://www.intechopen.com:443/200527 msHTTP/1.1nginx

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (96 ms)
PASS
IPv6 reachable (96 ms)
Info::
IPv6 is configured and reachable at 2600:1f18:256f:5300:454a:a796:553b:8f42, 2600:1f18:256f:5310:d457:d6d0:544e:e6cb
Got: 96 ms connect
IPv6 Ready
AAAA Records 2600:1f18:256f:5300:454a:a796:553b:8f42, 2600:1f18:256f:5310:d457:d6d0:544e:e6cb Connection Reachable (96 ms)
A+
Crawlability
robots.txt present, sitemap with 6 URLs
PASS
robots.txt present, sitemap with 6 URLs
Info::
robots.txt is present
Got: 1971 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 6 entries
Info::
Sitemap index with 6 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1971 B Sitemaps referenced 1 User-agents YouBot, GPTBot, ClaudeBot, Bytespider, OAI-SearchBot, Applebot-Extended, Amazonbot, FacebookBot, Meta-ExternalAgent, Applebot, PerplexityBot, CCBot, *, Google-Extended, Diffbot, omgili Blocking No — crawling allowed
Sitemap: https://www.intechopen.com/sitemap-v2/sitemap.xml

# =============================================================
# IntechOpen — robots.txt
# Last updated: March 2026
# =============================================================

# ===== DEFAULT: Allow all standard crawlers =====
User-agent: *
Allow: /
Disallow: /_preview

# =============================================================
# AI SEARCH CRAWLERS — Allow
# These bots surface content in AI-powered search results
# and cite sources with backlinks. Allowing them increases
# discoverability for researchers using AI search tools.
# =============================================================

# OpenAI — ChatGPT Search (retrieval only, does NOT train models)
User-agent: OAI-SearchBot
Allow: /

# Perplexity AI Search (always cites sources with links)
User-agent: PerplexityBot
Allow: /

# Google — AI Overviews / Gemini
User-agent: Google-Extended
Allow: /

# Apple Intelligence
User-agent: Applebot-Extended
Allow: /

# Amazon — Alexa AI / Rufus
User-agent: Amazonbot
Allow: /

# You.com AI Search
User-agent: YouBot
Allow: /

# =============================================================
# AI TRAINING SCRAPERS — Block
# These bots collect content to train AI models.
# =============================================================

# OpenAI — GPTBot (training crawler; ChatGPT Search is handled by OAI-SearchBot above)
User-agent: GPTBot
Disallow: /

# Common Crawl (used to train many open-source LLMs)
User-agent: CCBot
Disallow: /

# Anthropic — ClaudeBot (training crawler)
User-agent: ClaudeBot
Disallow: /

# ByteDance / TikTok
User-agent: Bytespider
Disallow: /

# Diffbot
User-agent: Diffbot
Disallow: /

# Meta / Facebook (training)
User-agent: FacebookBot
Disallow: /
User-agent: Meta-ExternalAgent
Disallow: /

# Omgili / Webz.io
User-agent: omgili
Disallow: /

# Applebot (training; Applebot-Extended above handles Apple Search)
User-agent: Applebot
Disallow: /
sitemap.xml 200 OK
Type Sitemap Index URLs 6 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
intechopen.com — via GoDaddy.com, LLC, 15 years, 10 months old
PASS
intechopen.com — via GoDaddy.com, LLC, 15 years, 10 months old
Info::
Domain registered until Sep 9, 2027 (1 years, 4 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: GoDaddy.com, 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.
Domain expiry

417 days

September 9, 2027

SSL certificate

179 days

Issued by Sectigo Limited

Domain age

15 years, 10 months

Registered September 9, 2010

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2600:1f18:256f:5310:d457:d6d0:544e:e6cb

Registrar

GoDaddy.com, LLC

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 GoDaddy.com, LLC
Created September 9, 2010 (15 years, 10 months ago)
Expires September 9, 2027 (1 years, 4 months)
Last Updated August 12, 2025
Name Servers ns-124.awsdns-15.com, ns-1354.awsdns-41.org, ns-1760.awsdns-28.co.uk, ns-869.awsdns-44.net
DNSSEC Not enabled
Hosting
IP Address 2600:1f18:256f:5310:d457:d6d0:544e:e6cb
Data source: rdap (0.2s)

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 426 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
39 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
96 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
195 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
426 ms
Total Time Total request time from DNS lookup through full response.
427 ms

Connection waterfall

DNS Lookup 39 ms TCP Connect 96 ms TLS Handshake 195 ms Server Processing 96 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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