Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BRedirect Chain1 redirect(s), 1564 ms totalREVIEW
https://usyd.edu.au
873 ms · HTTP/1.1
https://www.sydney.edu.au/
691 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://usyd.edu.au | 301 | 873 ms | HTTP/1.1 | Microsoft-Azure-Application-Gateway/v2 |
| 2 | https://www.sydney.edu.au/ | 200 | 691 ms | HTTP/1.1 | Apache |
See the visual redirect chain in the HTTP Probe tab →
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
BHTTP Probe TimingTotal 1189 ms — DNS, TCP, TLS, TTFB, content transfer breakdownREVIEW
Connection waterfall
BTLS Certificate Expiry & Recommendations147 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
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
ADNS Records1 A records, 461 ms lookupPASS
| A | 20.248.131.216 |
| AAAA | — |
| CNAME | — |
| NS | ns1.aarnet.net.au, metro.ucc.usyd.edu.au, dns-2.sydney.edu.au, ns3.aarnet.net.au, ns2.aarnet.net.au, extro.ucc.usyd.edu.au, dns-1.sydney.edu.au |
| MX | 10 au-smtp-inbound-2.mimecast.com 10 au-smtp-inbound-1.mimecast.com |
| TXT | SPF v=spf1 include:_spf.sydney.edu.au ~all QuoVadis=9a282421-83c8-4906-8318-5e29d2a693fc amazonses:wC6DbGfbqYZ6bZXVV5sPD8DDaZ2fzqSDmiNF3Tp4TVw= MS=ms15049950 6e9edc4f-8e9c-4d1b-8dee-e9221ffb26b6 b05061da-ae6b-48dd-9f4f-48a537b10e79 _u97yxt8w0usi8tafw771gj5yqevo935 _1ubrlkupkcja1c9wnbyx4c677cukzsz have-i-been-pwned-verification=ffefcf8f6e79ae1e7ed8aeb672240e51 yp7hg74ks0yfz7ysjxjnttjjrktjhl6k amazonses:GU6lt84075+IBFsCCywPVidGj2ASF/3x//kgDb+hrCk= adobe-idp-site-verification=6e9edc4f-8e9c-4d1b-8dee-e9221ffb26b6 jamf-site-verification=rzWIowMobNMn5n0IV3GB2g 7gbw8q55rsk5xcfsp3xmdwzvw44pq8jd |
| 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
A+Crawlabilityrobots.txt present, sitemap with 4 URLsPASS
User-agent: FunnelBack
Disallow: /education_social_work/bulletin/
User-agent: *
Allow: /
Sitemap:https://www.sydney.edu.au/sitemap.xml
Allow: /myuni-content/
Allow: /medicine-health/schools/sydney-school-of-health-sciences/academic-staff/
Allow: /science/about/our-people/academic-staff/
Disallow: /medicine/fmrc/icpc3dev/
Disallow: /handbooks/archive/2011/
Disallow: /medicine/people/academics-old/profiles/
Disallow: /search/
Disallow: /library/images/
Disallow: /library/scripts/
Disallow: /library/styles/
Disallow: /library/test/
Disallow: /library/templates/
Disallow: /library/stream/
Disallow: /library/screens/
Disallow: /library/cgi-bin/
Disallow: /library/unified-search/
Disallow: /library/contacts/email-campaigns/
Disallow: /styleguide/
Disallow: /agents/
Disallow: /errors/
Disallow: /architecture/about/our-people/academic-staff/staff-profile.html
Disallow: /law/about/our-people/academic-staff/staff-profile.html
Disallow: /music/about/our-people/academic-staff/staff-profile.html
Disallow: /engineering/about/our-people/academic-staff/staff-profile.html
Disallow: /medicine-health/about/our-people/academic-staff/staff-profile.html
Disallow: /medicine-health/schools/faculty-of-health-sciences/academic-staff/staff-profile.html
Disallow: /arts/about/our-people/academic-staff/staff-profile.html
Disallow: /content/dam/corporate/documents/agents-portal/
Disallow: /content/dam/corporate/documents/study/guides/usyd-international-guide-2022.pdf
Disallow: /content/dam/corporate/documents/study/guides/usyd-international-guide.pdf
Disallow: /content/dam/corporate/documents/study/how-to-apply/international-admission-guide.pdf
Disallow: /content/dam/corporate/documents/study/getting-started/welcome-guide_international.pdf
Disallow: /content/dam/corporate/documents/business-school/study/mba/part-time-mba-brochure.pdf
Disallow: /business/study/mba/part-time-mba/request-a-brochure/thank-you.html
Disallow: /study/mba/full-time-mba/request-a-brochure/thank-you.html
Disallow: /business/study/mba/global-executive-mba/request-a-brochure/thank-you.html
Disallow: /content/dam/students/documents/graduations/programs/
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligenceusyd.edu.au — via Education Services Australia Limited, hosted on Microsoft AzurePASS
Unknown
147 days
Issued by DigiCert Inc
Unknown
Not enabled
Protects against DNS spoofing
Microsoft Azure
ASN AS8075
20.248.131.216
Education Services Australia Limited
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
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.
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