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https://au.dk

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
78
GRADE
C
FIX
1
REVIEW
5
PASS
3
INFO
0
Probed from Sao Paulo, Brazil
302 Found
Checks
9
3 PASS 5 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.

B
Redirect Chain
1 redirect(s), 1931 ms total
REVIEW
1 redirect(s), 1931 ms total
Info::
Single redirect
Got: https://au.dk → https://www.au.dk/ (302)
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://au.dk
Warning::
Redirect overhead: 1931 ms total
Got: 1931 ms

https://au.dk

838 ms · HTTP/1.1

302

https://www.au.dk/

1093 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://au.dk302838 msHTTP/1.1
2https://www.au.dk/2001093 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

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

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.au.dk/
200https://au.dk/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://au.dk/ → https://www.au.dk/

Use 301 (permanent) instead of 302 (temporary)

B
HTTP Probe Timing
Total 856 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
201 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
217 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
221 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
856 ms
Total Time Total request time from DNS lookup through full response.
857 ms

Connection waterfall

DNS Lookup 201 ms TCP Connect 217 ms TLS Handshake 221 ms Server Processing 217 ms Content Transfer 0 ms
B
TLS Certificate Expiry & Recommendations
67 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

67
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
1 A records, 203 ms lookup
PASS
1 A records, 203 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 185.45.20.48
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: ns3.au.dk, ns4.au.dk
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 (203 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 203 ms
A185.45.20.48
AAAA—
CNAME—
NSns3.au.dk, ns4.au.dk
MX
10 au-dk.m-v1.mx.microsoft
TXT
HARICA-6Qf59HXTkKhLQAnEiXF
SPF v=spf1 include:spf.au.dk -all
+iP7dH9sQ7U6Bizb5xnlnP1XHsguI/P3TfT9D3uaDJU=
eUWetivz3T6kSv0rVsZctuxW608nPMLSD2OOrysnUJY=
feM2adQcQxv1whDnMIPyaXUfBUntVwKt0RByr6toeoU=
v=msv1 t=ACEC4DAA-8F71-4B7A-BF61-05179ED7BA3D
facebook-domain-verification=j5idhj3z2q5z0g278fbvz0r9a6514t
facebook-domain-verification=utyroagwj8u8kxmw2ic2lppqoyl7ci
_globalsign-domain-verification=_s8DS-NJexcgiiwmad7BTd5cb8ZNjQB8ud5pKppY8K
+Fnrpf/C6TrPbElr0B4fQGjNEYRd4T/ytAhMD8ykt/moByOIDbK0I6RMUBqJ0TVjSMNzyiD51EX7Ujot...
ppO+5CUA3y6OgCCZsRDPvU6O8Xixg5zXQ6Grj78SgEA/H44nZaQ+ZuSjSSQEPHw/JhIRBvtMLwOkhWl0...
cisco-ci-domain-verification=32d3e8846a2f05d750cd8b256efb1007d1dbe8b5cd6332d1776...
CAALookup not available with standard resolver
Resolved in 203 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.

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
Crawlability
no robots.txt, sitemap with 15 URLs
PASS
no robots.txt, sitemap with 15 URLs
Info::
No robots.txt found
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 15 entries
Info::
Sitemap index with 15 child sitemaps

robots.txt is optional but recommended. It tells search engine crawlers which pages to index.

Why this matters

No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.

Learn more ▾

A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.

Source: robotstxt.org

robots.txt No robots.txt found

No robots.txt found

This is fine for most sites — a missing robots.txt allows all crawling by default.

sitemap.xml 200 OK
Type Sitemap Index URLs 15 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
au.dk — 30 years, 7 months old, hosted on AU-ASN, DK
PASS
au.dk — 30 years, 7 months old, hosted on AU-ASN, DK
Info::
Domain registered until Mar 31, 2027 (11 months remaining)
Warning::
Registrar lock is NOT enabled
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.
Info::
Hosting: AU-ASN, DK
Got: AS62138
Domain expiry

288 days

March 31, 2027

SSL certificate

67 days

Issued by Let's Encrypt

Domain age

30 years, 7 months

Registered February 2, 1996

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

AU-ASN, DK

ASN AS62138

185.45.20.48

Registrar

Registrar unknown

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar
Created February 2, 1996 (30 years, 7 months ago)
Expires March 31, 2027 (11 months)
Name Servers ns3.au.dk, ns4.au.dk
Hosting
IP Address 185.45.20.48
ASN AS62138 (AU-ASN, DK)
Provider AU-ASN, DK
Data source: whois (1.9s)

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.

Why this matters

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

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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