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https://overstock.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
93
GRADE
A
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from Amsterdam, Netherlands
301 Moved Permanently
Checks
9
6 PASS 3 REVIEW
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.overstock.com/
200https://overstock.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://overstock.com/ → https://www.overstock.com/

Consistent

B
TLS Certificate Expiry & Recommendations
280 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

280
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
B
CDN & Delivery
Akamai
REVIEW
Akamai
Info::
Site is served via Akamai CDN
Got: server header
CDN Detected: Akamai
Provider Akamai Evidence server header
A+
DNS Records
1 A records, 9 ms lookup
PASS
1 A records, 9 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 184.24.166.61
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2a02:26f0:1180:183::e96, 2a02:26f0:1180:19a::e96
Info::
4 nameserver(s) configured
Got: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net
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: 9 ms
Got: 9 ms
A184.24.166.61
AAAA2a02:26f0:1180:183::e96, 2a02:26f0:1180:19a::e96
CNAME—
NSdns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net
MX
0 overstock-com.mail.protection.outlook.com
TXT
f9ZtNknHxHL5abJ6sP4n
794a5440-2f7e-4290-a111-d760825bfeed
docker-verification=00f612b4-15a8-46ae-bf21-393a993c1b43
globalsign-domain-verification=51930d36897f77a8aa763ef9b730fc90
google-site-verification=-R3F1JCZ-YdCBGCgpU8QnTO3UdaWpmgb78lbMuXeqro
google-site-verification=PLPmk5cozL_pVgYYV90K1_-sVH_QeS5NOQbJhdgQlH4
google-site-verification=UUPHMXa2WH-c7Ys9XL_GPwPAkxNv30jPjL-9RIeUuQc
google-site-verification=VrzafT6KoHLIM-B7JiT4dh2C-fGBTObm_Zo_X3WMYdk
google-site-verification=hMfR3Z6ihuxLHC8UHB8dsH7_71t2r4SPrw3o1Qnpeho
google-site-verification=k5byGCYNNnSKN5QdbOmnB4QHHCzrw5qGrDvjpfZPjc8
google-site-verification=lwFhdI9C5N47saoU82L1IMs6aKWf2pcWgsVkFhMYJU8
google-site-verification=sAwY-6V5arQLrN2vY7sPrzNHK5A5G9d9sY9Jgy7LrLU
_globalsign-domain-verification=EGXYWFCTQynvOf5IBle5NjMEbKo9PBQaeH9mnr_Faj
_globalsign-domain-verification=NIyArddHtOpe5kb_pCFH5D_yiT5xVzEqeORSeRee0e
+bcd9BHkZzHoTMOHkZirO2Z0FzBmBxCVNUMvJL0oTEtOkQL2kGPDmmozPsq5PCWLs3ichMIz4+Zgn1W/...
ahrefs-site-verification_cea064a893366cd43a3c4062df9c8f11662ee73530c0c6f325d10aa...
atlassian-domain-verification=RlWBXVhdSBLcKksNQLCSI0icckuVo55zfKultsMlgfj9lWcAID...
SPF v=spf1 ip4:65.116.112.0/21 ip4:173.241.144.0/20 ip4:52.8.140.255 ip4:54.164.132....
CAALookup not available with standard resolver
Resolved in 9 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), 475 ms total
PASS
1 redirect(s), 475 ms total
Info::
Single redirect
Got: https://overstock.com → https://www.overstock.com/ (301)
Info::
WWW normalization redirect

https://overstock.com

23 ms · HTTP/1.1

301

https://www.overstock.com/

452 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://overstock.com30123 msHTTP/1.1AkamaiGHost
2https://www.overstock.com/200452 msHTTP/1.1Vercel

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2a02:26f0:1180:183::e96, 2a02:26f0:1180:19a::e96
Got: 1 ms connect
IPv6 Ready
AAAA Records 2a02:26f0:1180:183::e96, 2a02:26f0:1180:19a::e96 Connection Reachable (1 ms)
A+
Crawlability
robots.txt present, sitemap with 59 URLs
PASS
robots.txt present, sitemap with 59 URLs
Info::
robots.txt is present
Got: 1144 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 59 entries
Info::
Sitemap index with 59 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1144 B Sitemaps referenced 1 User-agents GoogleOther, PetalBot, *, GPTBot, Sogou web spider, Mediapartners-Google, Amazonbot, meta-externalagent, Pinterestbot Blocking No — crawling allowed
User-agent: GPTBot
Disallow: /*~*/results.html
 
User-agent: Sogou web spider
Disallow: */results.html
 
User-agent: Amazonbot
Disallow: /*~*/results.html
 
User-agent: meta-externalagent
Disallow: /*~*/results.html

User-agent: Mediapartners-Google
Disallow: /

User-Agent: Pinterestbot
Crawl-delay: 0.2

User-Agent: GoogleOther
Disallow: /c/*
Disallow: */results.html

User-Agent: PetalBot
Disallow: */results.html

User-Agent: *
Disallow: /api/
Disallow: /cart
Disallow: /checkout
Disallow: /order-confirmation
Disallow: /paypal-checkout
Disallow: /paypal-processing
Disallow: *~*/*.html
Disallow: /*/*/*/*,*,*,*,*/*/*.html
Disallow: /*/*/*,*,*,*,/*,*,*,*,/*/*.html
Disallow: /*,*,/*,/results.html
Disallow: *shipping,*
Disallow: /*,/k,*
Disallow: /c/*?*&*&*&*&*&*
Disallow: /c/*?*a*=*-*-*
Disallow: /*?*brand=*~*
Disallow: /*?*senttime=*
Disallow: /*?*send_id=*
Disallow: /*?*dispatch_id=*
Disallow: /*?*token=*
Disallow: /*?*price=*
Disallow: /*?*products=*
Disallow: /*~*~*
Disallow: /octs/track/onecall/*
Disallow: /onecalltracking/*
Disallow: /*?*featuredproduct=

Sitemap: https://api.overstock.com/sitemaps/overstock-v3/us/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 59 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
overstock.com — via MarkMonitor Inc., 27 years, 7 months old
PASS
overstock.com — via MarkMonitor Inc., 27 years, 7 months old
Info::
Domain registered until Feb 11, 2027 (9 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: MarkMonitor 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.
Domain expiry

240 days

February 11, 2027

SSL certificate

280 days

Issued by DigiCert Inc

Domain age

27 years, 7 months

Registered February 11, 1999

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2a02:26f0:1180:183::e96

Registrar

MarkMonitor Inc.

Unlocked 4 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar MarkMonitor Inc.
Created February 11, 1999 (27 years, 7 months ago)
Expires February 11, 2027 (9 months)
Last Updated January 10, 2025
Name Servers dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net
DNSSEC Enabled
Hosting
IP Address 2a02:26f0:1180:183::e96
Data source: rdap (0.1s)

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 23 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
7 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.
5 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
24 ms
Total Time Total request time from DNS lookup through full response.
24 ms

Connection waterfall

DNS Lookup 7 ms TCP Connect 1 ms TLS Handshake 5 ms Server Processing 11 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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