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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Santa Clara, United States
301 Moved Permanently
Checks
9
6 PASS 2 REVIEW 1 FIX
F
IPv6 Readiness
Action
IPv6 records exist but unreachable
FIX
IPv6 records exist but unreachable
Warning::
IPv6 DNS records exist but server is not reachable
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
Got: 2620:12a:8000::4, 2620:12a:8001::4
Info::
IPv6 connection error
Got: dial tcp6 [2620:12a:8000::4]:443: connect: network is unreachable
IPv6 Misconfigured
AAAA Records 2620:12a:8000::4, 2620:12a:8001::4 Connection UNREACHABLE

Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.

Why this matters

Advertising IPv6 (AAAA records) without a reachable server means IPv6-preferring clients silently fail every connection.

Learn more

Modern browsers prefer IPv6 if AAAA exists (Happy Eyeballs algorithm). If the IPv6 server isn't reachable, browsers fall back to IPv4 — but with seconds of added latency per request. Either fix IPv6 reachability or remove the AAAA records.

Source: RFC 8305 (Happy Eyeballs)

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.zend.com/
200https://zend.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://zend.com/ https://www.zend.com/

Consistent

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

Certificate validity

69
days left
0d 30d 60d 90d+

Recommended actions

  • 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, 34 ms lookup
PASS
1 A records, 34 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 23.185.0.4
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: 2620:12a:8000::4, 2620:12a:8001::4
Info::
4 nameserver(s) configured
Got: ns-1334.awsdns-38.org, ns-1775.awsdns-29.co.uk, ns-469.awsdns-58.com, ns-527.awsdns-01.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: 34 ms
Got: 34 ms
A23.185.0.4
AAAA2620:12a:8000::4, 2620:12a:8001::4
CNAME
NSns-1334.awsdns-38.org, ns-1775.awsdns-29.co.uk, ns-469.awsdns-58.com, ns-527.awsdns-01.net
MX
0 zend-com.mail.protection.outlook.com
TXT
22d51d32a5ad44079350bebe324dd696
5s5hnv94wx9b8x9lhyg687djhq26r1py
92x7z9lhv8j2hzc116y7cdvkm91nxkwn
MS=ms61457972
_4rflu04mhac8w0de7c2m5mdf3fjb4eg
_globalsign-domain-verification=tDpjRBlQKPJriM7MhZaiyDFo5DP19cB3Q0c90JSPXC
_ygkt6ikz7zosy8ikfn48bc8nt6qaecj
atlassian-domain-verification=WWV/wmTQYmA2v9blKsWITEK6VAGGN73TYT6for2TkYHEDOc45g...
b2gc7s0jcf43t1mn6lj8n4spn8ffmltj
docusign=779bfc01-16a2-4404-9e4b-e5b14f6d45d6
google-site-verification=HUMMORzJHziR5dbEOBevsBowsa8FheTbzZzJ7gDwtNk
google-site-verification=O8EgAssHI0cSXcmCRLwJRNuZB0UGQ_IlM7lDCw6EZeU
SPF v=spf1 ip4:212.199.177.64/27 ip4:173.203.18.211 ip4:184.106.88.78 include:spf.pr...
CAALookup not available with standard resolver
Resolved in 34 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), 93 ms total
PASS
1 redirect(s), 93 ms total
Info::
Single redirect
Got: https://zend.com → https://www.zend.com/ (301)
Info::
WWW normalization redirect

https://zend.com

38 ms · HTTP/1.1

301

https://www.zend.com/

54 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://zend.com30138 msHTTP/1.1Pantheon
2https://www.zend.com/20054 msHTTP/1.1nginx

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 8 URLs
PASS
robots.txt present, sitemap with 8 URLs
Info::
robots.txt is present
Got: 3427 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 8 entries
Info::
Sitemap index with 8 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 3427 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /events/longhorn-php-promo
# SLA
Disallow: /sites/zend/files/pdfs/comparison-chart-zend-production-support-sla.pdf

Sitemap: https://www.zend.com/index/sitemap.xml

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

# Disallow Specific Query String Parameters
Disallow: /*&utm_source*
Disallow: /*&utm_medium*
Disallow: /*&utm_campaign*
Disallow: /*&utm_content*
Disallow: /*&utm_leadersource*
Disallow: /*&field=*
Disallow: /*?utm_source*
Disallow: /*?utm_medium*
Disallow: /*?utm_campaign*
Disallow: /*?utm_content*
Disallow: /*?utm_leadersource*
Disallow: /*?field=*
Disallow: /*?field_*
Disallow: /*?replytocom=*
Disallow: /*?hsFormKey=*
Disallow: /*?wvideo=*
Disallow: /*?wtime=*
Disallow: /*?goback=*
Disallow: /*??*
Disallow: /*?gni=*
Disallow: /*?fromStream=*
Disallow: /*?gnk=*
Disallow: /*?hsCtaTracking=*
Disallow: /*?(RoW2)=*
Disallow: /*?mkt_tok=*
Disallow: /*?r=*
Disallow: /*?__hstc=*
Disallow: /*?trk=*
Disallow: /*?nonamp=*
Disallow: /*?NA=*
Disallow: /*?(NA)=*
Disallow: /*?ref=*
Disallow: /*?hss_channel=*
Disallow: /*?PRID=*
Disallow: /*?sc=*
Disallow: /*?paper=*
Disallow: /*?platform=*
Disallow: /*?path=*
Disallow: /*?Gen-MD=*
Disallow: /*?source=*
Disallow: /*?v=*
Disallow: /*?en-=*
Disallow: /*?mgs1=*
Disallow: /*?examples=*
Disallow: /*?turl=*
Disallow: /*?EntryId=*
Disallow: /search/results?*
Disallow: /success/*
Disallow: /user/*

# Marketo Forms
Disallow: /marketo/form/perforce_marketo_form/*
A+
Domain Intelligence
zend.com — via GoDaddy.com, LLC, 27 years, 9 months old, hosted on Fastly
PASS
zend.com — via GoDaddy.com, LLC, 27 years, 9 months old, hosted on Fastly
Info::
Domain registered until Dec 13, 2026 (7 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.
Info::
Hosting: Fastly
Got: AS54113
Domain expiry

151 days

December 13, 2026

SSL certificate

69 days

Issued by Let's Encrypt

Domain age

27 years, 9 months

Registered December 14, 1998

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Fastly

ASN AS54113

23.185.0.4

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 December 14, 1998 (27 years, 9 months ago)
Expires December 13, 2026 (7 months)
Last Updated December 14, 2025
Name Servers ns-1334.awsdns-38.org, ns-1775.awsdns-29.co.uk, ns-469.awsdns-58.com, ns-527.awsdns-01.net
DNSSEC Not enabled
Hosting
IP Address 23.185.0.4
ASN AS54113 (FASTLY - Fastly, Inc., US)
Provider Fastly
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

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 69 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
57 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.
69 ms
Total Time Total request time from DNS lookup through full response.
69 ms

Connection waterfall

DNS Lookup 57 ms TCP Connect 1 ms TLS Handshake 5 ms Server Processing 6 ms Content Transfer 0 ms
A+
CDN & Delivery
Fastly (HIT)
PASS
Fastly (HIT)
Info::
Site is served via Fastly CDN
Got: x-served-by: cache-sjc1000093-SJC
Info::
CDN cache status: HIT
CDN Detected: Fastly
Provider Fastly Cache Status HIT Evidence x-served-by: cache-sjc1000093-SJC
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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