Skip to content
https://barnesandnoble.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
86
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::
HTTP version does not redirect to HTTPS
Got: HTTP 301 Expected: 301 redirect to HTTPS

www / non-www

403https://www.barnesandnoble.com/
200https://barnesandnoble.com/

HTTP → HTTPS

301http://barnesandnoble.com/ → http://www.barnesandnoble.com/

HTTP version does not redirect to HTTPS

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

Certificate validity

50
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
1 A records, 28 ms lookup
PASS
1 A records, 28 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 161.221.74.213
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
6 nameserver(s) configured
Got: a22-67.akam.net, a18-65.akam.net, a13-64.akam.net, a20-66.akam.net, a3-64.akam.net, a1-225.akam.net
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: 28 ms
Got: 28 ms
A161.221.74.213
AAAA—
CNAME—
NSa22-67.akam.net, a18-65.akam.net, a13-64.akam.net, a20-66.akam.net, a3-64.akam.net, a1-225.akam.net
MX
10 mxb-00189e01.gslb.pphosted.com
10 mxa-00189e01.gslb.pphosted.com
TXT
facebook-domain-verification=kip2xem6dh35kkunaf4wy0rglzntuu
SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
globalsign-domain-verification=DC4068F72A3105BF4756F557207EE45A
MS=ms43486183
apple-domain-verification=WAywMPm3MWiRw_mMX8O50IJbtwgzHiC_Hqya1dp6Hak
google-site-verification=S9HdDixcYvcC3VmBJ10vMnp2bvWo-NOEhTsz1872cwM
Ayj1YQOq3HE8gtQeyJmTeFmFm0CUjnCt/HTla7UP5WVhCdnXRB9rHh50aLrFLDrgAbDCPT9TcCMPhLWE...
CAALookup not available with standard resolver
Resolved in 28 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.

A
Redirect Chain
1 redirect(s), 453 ms total
PASS
1 redirect(s), 453 ms total
Info::
Single redirect
Got: https://barnesandnoble.com → https://www.barnesandnoble.com/ (301)
Info::
WWW normalization redirect

https://barnesandnoble.com

382 ms · HTTP/1.0

301

https://www.barnesandnoble.com/

71 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://barnesandnoble.com301382 msHTTP/1.0BigIP
2https://www.barnesandnoble.com/40371 msHTTP/1.1AkamaiGHost

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 113 URLs
PASS
robots.txt present, sitemap with 113 URLs
Info::
robots.txt is present
Got: 406 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 113 entries
Info::
Sitemap index with 113 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 406 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
#robots.txt for https://www.barnesandnoble.com
User-agent: *
Disallow: /account/
Disallow: /mobile/account/
Disallow: /checkout/
Disallow: /mobile/checkout/
Disallow: */lia.barnesandnoble/
Disallow: /ajax?
Disallow: /www/search?
Disallow: /handler.jsp
Disallow: /google/ad
Disallow: /cartridges/
Disallow: /includes/
Disallow: /noresults/

Disallow: /s/
Sitemap: https://www.barnesandnoble.com/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 113 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
barnesandnoble.com — via CSC Corporate Domains, Inc., 31 years, 1 months old, hosted on BARNES-AND-NOBLE - Barnes & Noble Inc., US
PASS
barnesandnoble.com — via CSC Corporate Domains, Inc., 31 years, 1 months old, hosted on BARNES-AND-NOBLE - Barnes & Noble Inc., US
Info::
Domain registered until Aug 9, 2026 (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: CSC Corporate Domains, 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: BARNES-AND-NOBLE - Barnes & Noble Inc., US
Got: AS39960
Domain expiry

25 days

August 9, 2026

SSL certificate

50 days

Issued by DigiCert Inc

Domain age

31 years, 1 months

Registered August 10, 1995

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

BARNES-AND-NOBLE - Barnes & Noble Inc., US

ASN AS39960

161.221.74.213

Registrar

CSC Corporate Domains, Inc.

Unlocked 6 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the domain or enable auto-renewal to prevent accidental expiry
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar CSC Corporate Domains, Inc.
Created August 10, 1995 (31 years, 1 months ago)
Expires August 9, 2026 (3 months)
Last Updated August 5, 2025
Name Servers a1-225.akam.net, a13-64.akam.net, a18-65.akam.net, a20-66.akam.net, a22-67.akam.net, a3-64.akam.net
DNSSEC Not enabled
Hosting
IP Address 161.221.74.213
ASN AS39960 (BARNES-AND-NOBLE - Barnes & Noble Inc., US)
Provider BARNES-AND-NOBLE - Barnes & Noble Inc., US
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

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.
27 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
99 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
201 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
427 ms
Total Time Total request time from DNS lookup through full response.
427 ms

Connection waterfall

DNS Lookup 27 ms TCP Connect 99 ms TLS Handshake 201 ms Server Processing 100 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.

Send Feedback