Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
CURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Use 301 (permanent) instead of 302 (temporary)
BTLS Certificate Expiry & Recommendations58 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
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
BCDN & DeliveryVercelREVIEW
ADNS Records1 A records, 1668 ms lookupPASS
| A | 64.239.109.1 |
| AAAA | — |
| CNAME | — |
| NS | ns1.depaul.edu, ns2.depaul.edu, ns3.depaul.edu |
| MX | 0 depaul-edu.mail.protection.outlook.com |
| TXT | SPF v=spf1 include:spf.protection.outlook.com include:_spf.google.com include:us04._... atlassian-domain-verification=tl5FjTuHJSvXnSIqkAD2/1ahiDganOEAwSu7AsaDi4Cg3LoBgy... sitecore-domain-verification=f26552bc913449ab8d4cce62a0327360 smartsheet-site-validation- cKiBo/13z/uR403bulq/Q8y5l1MDoJp58twQ+YzPtbI== 00432575 apple-domain-verification=fJm7Ug5BsVd0I7Fi jamf-site-verification=VSmnK0pev7QRYBYk1BI7tA ZOOM_verify_e622Dwe-Qi-ZMEJfMH3t1w adobe-idp-site-verification=8a6f84b0-d1ab-4c81-b86e-824c9dd7bbad 94pJDr9pjApZzPZC8eS7VSv0OsI9Eqm5kB0SHQznGxPFEJTVydPKk0uDlFB67dmmwiQjFeoljoIIgddx... google-site-verification=GgecFA3L0pqdJgXIoUiQFXFE9Hwses_IqoKNOjBMcQo apple-domain-verification=DWFSSXFvnBuV7Pi7 formstack-domain-verification=df5ee21922945b43504e870d083cb619 d365mktkey=78j6ucxmbwnam324kqwct83gn pardot_108062_*=ab71f7137b229ea4b1d9c6264593d7946484d9e24b2b03a3beab666406d81967 d365mktkey=6g5mnyf39l9h7hbqtqcabewb8 autodesk-domain-verification=-bu6ydZH05rrmvK5L1BO |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
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.
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.
DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.
Source: DNS performance benchmarks
ARedirect Chain1 redirect(s), 965 ms totalPASS
https://depaul.edu
79 ms · HTTP/1.1
https://www.depaul.edu/
886 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://depaul.edu | 307 | 79 ms | HTTP/1.1 | Vercel |
| 2 | https://www.depaul.edu/ | 200 | 886 ms | HTTP/1.1 | Vercel |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 5612 URLsPASS
User-agent: *
Allow: /
Sitemap: https://www.depaul.edu/sitemap.xml
A+Domain Intelligencedepaul.edu — 40 years, 2 months old, hosted on AWSPASS
778 days
July 31, 2028
58 days
Issued by Let's Encrypt
40 years, 2 months
Registered September 2, 1986
Status unknown
Protects against DNS spoofing
AWS
ASN AS16509
64.239.109.1
Registrar unknown