Skip to content
https://www.ibm.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
90
GRADE
A
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Madrid, Spain
303 HTTP 303
Checks
9
5 PASS 4 REVIEW
B
DNS Records
1 A records, 32 ms lookup
REVIEW
1 A records, 32 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 95.100.115.154
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:e0:584::1e89, 2a02:26f0:e0:587::1e89
Warning::
CNAME record at zone apex
A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead.
Got: outer-global-dual.ibmcom-tls12.edgekey.net
Info::
No NS records found
Info::
No MX records — email not configured via DNS
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Info::
DNS resolution time: 32 ms
Got: 32 ms
A95.100.115.154
AAAA2a02:26f0:e0:584::1e89, 2a02:26f0:e0:587::1e89
CNAMEouter-global-dual.ibmcom-tls12.edgekey.net
NS—
MX—
TXT—
CAALookup not available with standard resolver
Resolved in 32 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

A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead.

Why this matters

CNAME at the apex (example.com) breaks every other apex record (MX, TXT, NS) — DNS-protocol violation per RFC 1034.

Learn more ▾

RFC 1034 forbids CNAME alongside other records at the same name. Some DNS providers offer ALIAS / ANAME / flattened-CNAME records that work around this — use those instead. Otherwise apex-level CNAME breaks email (no MX), domain ownership verification (no TXT), and more.

Source: RFC 1034

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.

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.

Learn more ▾

SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.

Source: RFC 7208 (SPF)

B
Redirect Chain
2 redirect(s), 315 ms total
REVIEW
2 redirect(s), 315 ms total
Warning::
2 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.

https://www.ibm.com

20 ms · HTTP/1.1

303

https://www.ibm.com/es-en

272 ms · HTTP/1.1

301

https://www.ibm.com/us-en

23 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://www.ibm.com30320 msHTTP/1.1AkamaiGHost
2https://www.ibm.com/es-en301272 msHTTP/1.1
3https://www.ibm.com/us-en20023 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

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

Certificate validity

273
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 DNSSEC on your domain for DNS spoofing protection
  • 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+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2a02:26f0:e0:584::1e89, 2a02:26f0:e0:587::1e89
Got: 1 ms connect
IPv6 Ready
AAAA Records 2a02:26f0:e0:584::1e89, 2a02:26f0:e0:587::1e89 Connection Reachable (1 ms)
A+
Crawlability
robots.txt present, sitemap with 15 URLs
PASS
robots.txt present, sitemap with 15 URLs
Info::
robots.txt is present
Got: 4612 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 15 entries
Info::
Sitemap index with 15 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 4612 B Sitemaps referenced 6 User-agents MagpieRSS, psnsearch, Acrolinx-bot, Fast corporate crawler, 008, magpie-crawler, HTTrack, amazon-Quick-on-behalf-of, *, magpie-crawler/1.1 Blocking No — crawling allowed
User-agent: *
Disallow: /account/registration
Disallow: /account/mypro
Disallow: /account/myint
Disallow: /Admin
Disallow: /cgi-
Disallow: /contact/employees/servlets
Disallow: /data/
Disallow: /db2s
Disallow: /developerworks/*-pdf.pdf$
Disallow: /developerworks/forums/servlet
Disallow: /developerworks/forums/abuse
Disallow: /developerworks/forums/post
Disallow: /docs/api
Disallow: /fcgi-
Disallow: /fscripts
# Disallow: /homepage
Disallow: /image
Disallow: /mashupmaker
Disallow: /mysupport/s/forumshome
Disallow: /mysupport/s/forumsproduct
Disallow: /mysupport/s/forumsquestion
Disallow: /partnerworld/portal
Disallow: /portal/home
Disallow: /products/finder
Disallow: /profiles
Disallow: /scripts
Disallow: /Scripts
Disallow: /search/?
Disallow: /Search
Disallow: /smartmarket/*/productListInitial.action?
Disallow: /standards
Disallow: /support/knowledgecenter/api
Disallow: /support/knowledgecenter/v1
Disallow: /survey
Disallow: /testing
Disallow: /tmp
Disallow: /vrm/bin/sendThisPage
Disallow: /webmaster
Disallow: /zx
Disallow: /zz
Disallow: /*.ssi$
Disallow: /account/myibm/InterestsEdit.do
Disallow: /wcs
Disallow: /wcsstore
Disallow: /webapp
Disallow: /web/portal/software/websphere
Disallow: /common/austin-summit
Disallow: /link
Disallow: /links
Disallow: /web/portal/commerce 
Disallow: /industries/clients
Disallow: /standards
# Disallow: /internal
Disallow: /test
Disallow: /test-kick-tires
Disallow: /test-v1-page-template
Disallow: /product-detail
Disallow: /watson/assets/pdfs/reg
Disallow: /zprod-ease
Disallow: /zProd-ease
Disallow: /zshowcase
Disallow: /widgets-admin
Disallow: /w3
Disallow: /mintlify-assets
# Disallow: /multimedia

sitemap: https://www.ibm.com/content/sitemap/href-sitemap-index.xml
sitemap: https://www.ibm.com/content/dam/adobe-cms/IBM_Adobe_Sitemap.xml
sitemap: https://www.ibm.com/mysupport/s/sitemap.xml
sitemap: https://www.ibm.com/docs/sitemap.xml
sitemap: https://www.ibm.com/us-en.sitemap.new-news-sitemap.xml
sitemap: https://www.ibm.com/us-en.sitemap.think-news-news-sitemap.xml

User-agent: Fast corporate crawler
Disallow: //
Disallow: /account/registration
Disallow: /account/mypro
Disallow: /account/myint
Disallow: /Admin
Disallow: /cgi-
Disallow: /common
Disallow: /contact/employees/servlets
Disallow: /data/
Disallow: /db2s
Disallow: /developerworks
Disallow: /fcgi-
Disallow: /fscripts
Disallow: /homepage
Disallow: /i/
Disallow: /image
Disallow: /investor
Disallow: /link
Disallow: /mashupmaker
Disallow: /portal/home
Disallow: /products/finder
Disallow: /profiles
Disallow: /SametimeWebApp
Disallow: /scripts
Disallow: /Scripts
Disallow: /search/?
Disallow: /Search
Disallow: /survey
Disallow: /tmp
Disallow: /vrm/bin/sendThisPage
Disallow: /webmaster
Disallow: /zx
Disallow: /zz

User-agent: 008
Disallow: /smartmarket

# Added for IN4173782 on 7Aug2013
User-agent: magpie-crawler
Disallow: /connections/

# Added for IN4177562 on 8Aug2013
User-agent: magpie-crawler/1.1
Disallow: /connections/

# Added for IN4177562 on 8Aug2013
User-agent: MagpieRSS
Disallow: /connections/   

User-agent: psnsearch
Disallow: /developerworks/wikis/login.action

# Added to block site mirroring
User-agent: HTTrack
Disallow: /


User-agent: Acrolinx-bot
# Disallow: //
Disallow: /account/registration
Disallow: /account/mypro
Disallow: /account/myint
Disallow: /Admin
Disallow: /cgi-
Disallow: /contact/employees/servlets
Disallow: /data/
Disallow: /db2s
Disallow: /developerworks/*-pdf.pdf$
Disallow: /developerworks/forums/servlet
Disallow: /developerworks/forums/abuse
Disallow: /developerworks/forums/post
Disallow: /docs/api
Disallow: /fcgi-
Disallow: /fscripts
# Disallow: /homepage
Disallow: /image
Disallow: /mashupmaker
Disallow: /mysupport/s/forumshome
Disallow: /mysupport/s/forumsproduct
Disallow: /mysupport/s/forumsquestion
Disallow: /partnerworld/portal
Disallow: /portal/home
Disallow: /products/finder
Disallow: /profiles
Disallow: /scripts
Disallow: /Scripts
Disallow: /search/?
Disallow: /Search
Disallow: /smartmarket/*/productListInitial.action?
Disallow: /standards
Disallow: /support/knowledgecenter/api
Disallow: /support/knowledgecenter/v1
Disallow: /survey
Disallow: /testing
Disallow: /tmp
Disallow: /vrm/bin/sendThisPage
Disallow: /webmaster
Disallow: /zx
Disallow: /zz
Disallow: /*.ssi$
Disallow: /account/myibm/InterestsEdit.do
Disallow: /wcs
Disallow: /wcsstore
Disallow: /webapp
Disallow: /web/portal/software/websphere
Disallow: /common/austin-summit
Disallow: /link
Disallow: /links
Disallow: /web/portal/commerce 
Disallow: /industries/clients
Disallow: /standards

User-agent: amazon-Quick-on-behalf-of
Disallow: /mysupport
sitemap.xml 200 OK
Type Sitemap Index URLs 15 entries Valid XML Yes
Child Sitemaps:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.ibm.com/
301https://ibm.com/

Preferred variant: www

HTTP → HTTPS

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

Consistent

A+
Domain Intelligence
ibm.com — via CSC Corporate Domains, Inc., 40 years, 7 months old
PASS
ibm.com — via CSC Corporate Domains, Inc., 40 years, 7 months old
Info::
Domain registered until Mar 20, 2027 (11 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.
Domain expiry

279 days

March 20, 2027

SSL certificate

273 days

Issued by DigiCert Inc

Domain age

40 years, 7 months

Registered March 19, 1986

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2a02:26f0:1180:185::3831

Registrar

CSC Corporate Domains, Inc.

Lock status unknown 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
Registrar CSC Corporate Domains, Inc.
Created March 19, 1986 (40 years, 7 months ago)
Expires March 20, 2027 (11 months)
Last Updated March 16, 2026
Name Servers dns1.p05.nsone.net, dns2.p05.nsone.net, dns3.p05.nsone.net, dns4.p05.nsone.net
DNSSEC Not enabled
Hosting
IP Address 2a02:26f0:1180:185::3831
Data source: rdap (0.1s)

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

A+
HTTP Probe Timing
Total 43 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
31 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.
3 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
44 ms
Total Time Total request time from DNS lookup through full response.
44 ms

Connection waterfall

DNS Lookup 31 ms TCP Connect 1 ms TLS Handshake 3 ms Server Processing 9 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