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https://nau.edu

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
4
PASS
4
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
4 PASS 4 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
Info::
www/non-www redirect configured correctly (preferred: non-www)
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 0 Expected: 301 redirect to HTTPS

www / non-www

301https://www.nau.edu/
200https://nau.edu/

Preferred variant: non-www

HTTP → HTTPS

http://nau.edu/

HTTP version does not redirect to HTTPS

B
HTTP Probe Timing
Total 1005 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
45 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
170 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
159 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
686 ms
Total Time Total request time from DNS lookup through full response.
1.01 s

Connection waterfall

DNS Lookup 45 ms TCP Connect 170 ms TLS Handshake 159 ms Server Processing 313 ms Content Transfer 319 ms
B
TLS Certificate Expiry & Recommendations
171 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

171
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • 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, 74 ms lookup
PASS
1 A records, 74 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 4.242.159.29
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: ns7.dnsmadeeasy.com, ns6.dnsmadeeasy.com, ns5.dnsmadeeasy.com
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: 74 ms
Got: 74 ms
A4.242.159.29
AAAA—
CNAME—
NSns7.dnsmadeeasy.com, ns6.dnsmadeeasy.com, ns5.dnsmadeeasy.com
MX
10 nau-edu.mail.protection.outlook.com
TXT
abuseipdb-verification=XTcLdeX6
MS=B24A23F2C594D16D4695F21BBF8810FA8ADDA396
wpe-verification=stagehlessnau
atlassian-domain-verification=ladGwWWYa7qYV02KOxN4vx8GNdVamuV/62dgiR5NlttWx1OB2G...
e2ma-verification=xusgb
e2ma-verification=n5kbb
pE2SlPcQkbBrB9U++xDogf/DTq0RDPSqTqet+4gMgwnAMcDEFU1Xo8nsEIwPfT7oty7fUvkyWYwF2WJM...
e2ma-verification=by7eb
e2ma-verification=vnrbb
e2ma-verification=wusgb
p3lhld5ktun8ad28bo6k8g7kip
adobe-idp-site-verification=0c284bbec3793da158e88d01ceef25c6d0d7a4ef501e51e8921c...
SPF v=spf1 ip4:134.114.101.32 ip4:134.114.141.165 ip4:134.114.93.160/27 ip4:134.114....
google-site-verification=ATuOOs7IXcwkbi_IXoUeGfRBu2KTFdtGujdUGhKK9tU
jamf-site-verification=CrOrFZYXmvwN4K9R7-f84A
airtable-verification=364d74a53dc73fafccb0e6a8c8c31725
CAALookup not available with standard resolver
Resolved in 74 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
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://nau.edu

https://nau.edu

635 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://nau.edu200635 msHTTP/1.1
A+
Crawlability
robots.txt present, sitemap with 354 URLs
PASS
robots.txt present, sitemap with 354 URLs
Info::
robots.txt is present
Got: 106 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 354 entries
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 106 B Sitemaps referenced 0 User-agents * Blocking No — crawling allowed
User-agent: *


Disallow: /digitalassets/widen-collective/


Disallow: /nutritarian-womens-health-study/
sitemap.xml 200 OK
Type URL Set URLs 354 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
nau.edu — 37 years, 2 months old, hosted on Microsoft Azure
PASS
nau.edu — 37 years, 2 months old, hosted on Microsoft Azure
Info::
Domain registered until Jul 31, 2028 (2 years, 3 months remaining)
Info::
Hosting: Microsoft Azure
Got: AS8075
Domain expiry

776 days

July 31, 2028

SSL certificate

171 days

Issued by Internet2

Domain age

37 years, 2 months

Registered August 14, 1989

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Microsoft Azure

ASN AS8075

4.242.159.29

Registrar

Registrar unknown

Lock status unknown 3 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Registrar
Created August 14, 1989 (37 years, 2 months ago)
Expires July 31, 2028 (2 years, 3 months)
Last Updated March 24, 2026
Name Servers ns7.dnsmadeeasy.com, ns6.dnsmadeeasy.com, ns5.dnsmadeeasy.com
Registrant Northern Arizona University
Hosting
IP Address 4.242.159.29
ASN AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US)
Provider Microsoft Azure
Data source: whois (1.0s)
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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