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.
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
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
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, 907 ms lookupPASS
| A | 20.248.131.216 |
| AAAA | — |
| CNAME | — |
| NS | ns2.aarnet.net.au, extro.ucc.usyd.edu.au, dns-2.sydney.edu.au, ns1.aarnet.net.au, dns-1.sydney.edu.au, ns3.aarnet.net.au, metro.ucc.usyd.edu.au |
| MX | 10 au-smtp-inbound-2.mimecast.com 10 au-smtp-inbound-1.mimecast.com |
| TXT | amazonses:0IHZN5vInjtbsdYax6yOIw4vvZqteDUpjqDSqdGzj1I= e2ma-verification=pscfb docusign=a7695cc6-4623-4316-a706-23657325ab53 e2ma-verification=gscfb e2ma-verification=mscfb e2ma-verification=dscfb QuoVadis=fa5b5130-6845-44e9-aff9-d7d99cb7a4f1 QuoVadis=99de6fd1-b376-435b-b51b-ceb13b1e79b3 00DBm000009XYnJ=1TBBm0000000AYr 4814f5c2-4b01-49dd-80fd-45e87da457fb twilio-domain-verification=1bf42055e6b2fd66e01fb147b83b43bf google-site-verification=FicMLRy30eyM2MMmnBgnMozHQtXFS78YgnKHpGCcTVE e2ma-verification=fscfb jamf-site-verification=--OCitRe8Q-a9UgDpIrMww QuoVadis=e7fef189-9355-4909-a4e3-cca4ea292354 dropbox-domain-verification=fpeciymg53f9 nL1YGBE58SPJ9BnsT2FL+3WqWINEYsE9z1iBuYCihLQkLjyFp3jrykKjEheWEmn43xAouO+ZwB1CbZvP... google-site-verification=8VHZg8qX31yvqTi7pd19BLZ0Nrt2661QtYNSKtGhcOM eij-0319-test citrix-verification-code=a8682ca7-9646-4d17-a59d-76faabb835d0 amazonses:mIamgsPYPVU/34/Lrfwy/WLYA/VlCixDhn1Sdb7KkBE= ca3-357762f6fc254ec18e9935e1fae1454b mongodb-site-verification=EU0Jyfgl6f7i8ZZTbINYsqpyFvpoFKBw e2ma-verification=rbcfb 70hghq0pkk24h30qq7nbcnmjht2g6g4l _24a90e68cc0376a40a32a0608e2e37ce.clfdpbhzfx.acm-validations.aws globalsign-domain-verification=A11A6E6AD624A5772D31F13C0F8EE7BD e2ma-verification=9rcfb e2ma-verification=jscfb2 google-site-verification=t8XhIElhYS1VilFi-fm6tcageUbT84cPgOeoUCAJ-Sk _1nuc6y3gmbehw3t0zhs74n4imdrraqi MS=ms64200608 4b18c512-a528-417b-9ed8-f9dcbf93d40f 6q93g2p0uuvipc0ncuosi1fj24 cisco-ci-domain-verification=3f4eb4ec39f2a890637ec0eaa088116d62e8dad1e19c1fb5b1e... ssttkk0il045roqnfri4h5p1cd ca3-59ef25b7f7f44bf682b8a6b2a67d1a51 eij-0214-test amazonses:BTNxwR8h4UeAMKfc+VEBDivrhfzORCB5P1p1HmZ5oTU= e2ma-verification=chcfb e2ma-verification=iscfb docusign=6487858d-6c33-4054-abaf-e9a01f4b0566 nintex.63f708c12b0accd8a496609b asv=3478f94d4f1fbadde215a32336b676e6 e2ma-verification=kscfb QuoVadis=5a3b6018-93a4-4966-8462-13d06f45f42f vsaofpp9lvcu7u0ti8dhe3a2l9 e2ma-verification=60hgb airtable-verification=ddd52671125efc96384ba43a34fe9402 s4bkyfsp6w4mcx530tvcpbfhltt4bx00 SPF v=spf1 include:_spf.sydney.edu.au ~all amazonses:ChrplsGUVAqan8552cP6215E8gNwzGuDGbOFNWHIrjE= amazonses:okfWT3Xs2O0RL4w5zAFE2/5Y/amLFW2S0Q2WRr0EBZM= QuoVadis=161ea971-9267-43e2-b404-0814be78ba3b google-site-verification=I_5Hy61RaPonBzkSeWdSb_JEe1d4b0bMCMlxMqV7z3Y google-site-verification=R5yrufEZdwakxSWm863bc6-mK89b7HpKqL6VVtN5QYQ QuoVadis=ee681c3f-5dd4-4a2a-9e91-e33ba2ee00ea mentimeter-1ed19cb5-7890-4670-937f-e09c26cdda36 have-i-been-pwned-verification=df7b52bdd2ef2607b6a4ba014d02fa2a e2ma-verification=jscfb adobe-idp-site-verification=4814f5c2-4b01-49dd-80fd-45e87da457fb facebook-domain-verification=32c564rzfgvrah7wzwcoibubraeot6 e2ma-verification=oscfb MS=ms89223713 google-site-verification=8UOgyig6x0H2rrZTw6Bp_4GNJs-esfFUXTPp7kisANI amazonses:4Mcub/ZnYyMGqXpTFdlNb9X1mb01p++6wiRSDcGnyJs= google-site-verification=mBFR3nSZc-mNBuDJjrabhy6dEmog0mLND-s6blBvFLs yahoo-verification-key=Pif2j4R7X7/EbViZCdVhSHNF8xhzVvpNLB4UG7KJGSo= _w1z93wubobd866xmkf8pbfew8c3h64g ZdLRPox5Fl8uzaQJrqD+xnW3ApEcmoI5wr4AKceZFsZc5jdfyC+nvzvmGx0X30zlPvyMFiilOWnsNbgX... YYx4FxZODmXL3P1ZqBNLQJETUrvLkiuZU7gT/uUki0gUkqH9Lz82xNYTbjDknX0/tEKMYEYs1IwAHBgi... ciscocidomainverification=278689c072ef190e9129e2e709636e5b223c9e296a2e24dfeedf75... |
| 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), 924 ms totalPASS
https://sydney.edu.au
573 ms · HTTP/1.1
https://www.sydney.edu.au/
351 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://sydney.edu.au | 301 | 573 ms | HTTP/1.1 | Microsoft-Azure-Application-Gateway/v2 |
| 2 | https://www.sydney.edu.au/ | 200 | 351 ms | HTTP/1.1 | Apache |
See the visual redirect chain in the HTTP Probe tab →
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+Domain Intelligencesydney.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