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https://iu.edu

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
92
GRADE
A
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
6 PASS 2 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
URL Variants
Action
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
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

200https://www.iu.edu/
200https://iu.edu/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://iu.edu/ → https://iu.edu/

Use 301 (permanent) instead of 302 (temporary)

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

Certificate validity

58
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
2 A records, 346 ms lookup
PASS
2 A records, 346 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 129.79.123.142, 129.79.123.143
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2001:18e8:2:e::11e, 2001:18e8:2:e::11d
Info::
3 nameserver(s) configured
Got: dns1.iu.edu, dns3.iu.edu, dns2.iu.edu
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
Warning::
DNS resolution is slow (346 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 346 ms
A129.79.123.142, 129.79.123.143
AAAA2001:18e8:2:e::11e, 2001:18e8:2:e::11d
CNAME—
NSdns1.iu.edu, dns3.iu.edu, dns2.iu.edu
MX
0 iu-edu.mail.protection.outlook.com
TXT
Q6XH8UJNJY8RAEK5OGF16RK06KWPPSOJRUCVFDONT
atlassian-sending-domain-verification=5367f8b9-a482-41d9-ab55-b6bea09d7cbb
yahoo-verification-key=o7CyMAWt6WG/gQQPyDS7azHe/veRzjtmOl6wHVX2xi8=
atlassian-domain-verification=w1Vnx74PWwnRh8xaWLafsIvTw4UaxXmknBaw1b4bCU0ab5qH8l...
atlassian-domain-verification=2GIWDY3gXLlRG5WRwCJ71M3gHXckr1svB4rsFD2vL0MUMZwiiZ...
docusign=1776cb70-3cd4-4c25-89a2-ee4f106446e3
google-site-verification=vPowpR03OV8P2AmugWIbDpxPPCtvszGj1tg40pb4ZiE
lucidlink-verification=2GV6QDC2BZSG1VW448ANZB16RM
d365mktkey=rdxQ7xES86qnEpzYxVsNc4yojeH1FxQOSBH9FUVW94gx
SFMC-vlZQwproWZGuTOfeULD9PeZ-M6Kj2ChRUEVLfxLa
anthropic-domain-verification-r67nzj=gyjd2axSjIgdJeFFRkzEvzAjI
MS=ms31221681
brevo-code:b1414e0a234265a2faa294058248ae06
S4u39ZpHeUISu0tZ2d4bTrQVs2OwEcyFfT5Enr81rpGmhE6I/M4Z+IHKQQSBxgyZFVRJha7RZ+IQAhlQ...
docusign=100c978d-3f38-4d49-a7e2-fdd782c5922e
openai-domain-verification=dv-rnKq5kzfAz4p4gY3Axy0ffRa
jamf-site-verification=MtxAbzswuGJN9MhVVtRpoA
google-site-verification=WgnuKI6eH9iryViWdeX80OO-gTPvCs1Ebau64EsXL8o
SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:_spf.qualtrics.com i...
d365mktkey=69lM6oc3axNCHTdYEomsUXFt7NN9RDACxuz3vvFEOlEx
ZOOM_verify_6QcffFUVROylmjju7sE-Ew
CAALookup not available with standard resolver
Resolved in 346 ms

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.

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Why this matters

DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.

Source: DNS performance benchmarks

A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://iu.edu

https://iu.edu

375 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://iu.edu200375 msHTTP/1.1
A+
IPv6 Readiness
IPv6 reachable (108 ms)
PASS
IPv6 reachable (108 ms)
Info::
IPv6 is configured and reachable at 2001:18e8:2:e::11e, 2001:18e8:2:e::11d
Got: 108 ms connect
IPv6 Ready
AAAA Records 2001:18e8:2:e::11e, 2001:18e8:2:e::11d Connection Reachable (108 ms)
A+
Crawlability
robots.txt present, sitemap with 289 URLs
PASS
robots.txt present, sitemap with 289 URLs
Info::
robots.txt is present
Got: 606 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 289 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 606 B Sitemaps referenced 1 User-agents AdsBot-Google-Mobile, AdsBot-Google, * Blocking No — crawling allowed
User-agent: AdsBot-Google-Mobile
Allow: /campaigns/

User-agent: AdsBot-Google
Allow: /campaigns/


User-agent: *
Disallow: /*.pdf$
Disallow: /_assets/
Disallow: /_documentation/
Disallow: /_examples/
Disallow: /_feeds/
Disallow: /_home/
Disallow: /_includes/
Disallow: /_internal/
Disallow: /_php/
Disallow: /_shared-sections/
Disallow: /gwassets/
Disallow: /error/
Disallow: /_css/
Disallow: /_js/
Disallow: /_shared/
Disallow: /_dev/
Disallow: /admin
Disallow: /brand/channel/web/development-design/campaign-template
Disallow: /about/leadership/ovpit-orig
Sitemap: https://coronavirus.iu.edu/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 289 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
iu.edu — 29 years, 7 months old
PASS
iu.edu — 29 years, 7 months old
Info::
Domain registered until Jul 31, 2026 (3 months remaining)
Domain expiry

45 days

July 31, 2026

SSL certificate

58 days

Issued by Internet2

Domain age

29 years, 7 months

Registered February 21, 1997

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2001:18e8:2:e::11d

Registrar

Registrar unknown

Lock status unknown 3 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
Registrar
Created February 21, 1997 (29 years, 7 months ago)
Expires July 31, 2026 (3 months)
Last Updated August 5, 2025
Name Servers dns3.iu.edu, dns1.iu.edu, dns2.iu.edu
Registrant Indiana University
Hosting
IP Address 2001:18e8:2:e::11d
Data source: whois (0.7s)
A
HTTP Probe Timing
Total 618 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
120 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
121 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
123 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
497 ms
Total Time Total request time from DNS lookup through full response.
618 ms

Connection waterfall

DNS Lookup 120 ms TCP Connect 121 ms TLS Handshake 123 ms Server Processing 133 ms Content Transfer 121 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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