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https://uu.se

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
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.

B
URL Variants
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
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.uu.se/
200https://uu.se/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://uu.se/ → https://uu.se/

Consistent

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

Certificate validity

31
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, 58 ms lookup
PASS
1 A records, 58 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 185.195.92.131
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 1 IPv6 (AAAA) record(s)
Got: 2a0a:56c4::b9c3:5d83
Info::
3 nameserver(s) configured
Got: dns1.uu.se, dns2.uu.se, dns3.uu.se
Info::
4 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
Info::
DNS resolution time: 58 ms
Got: 58 ms
A185.195.92.131
AAAA2a0a:56c4::b9c3:5d83
CNAME—
NSdns1.uu.se, dns2.uu.se, dns3.uu.se
MX
10 mailfilter-ng-4.sunet.se
10 mailfilter-ng-1.sunet.se
10 mailfilter-ng-3.sunet.se
20 mailfilter-ng-2.sunet.se
TXT
HARICA-BcHODu85rUbDAkv3swf
apple-domain-verification=fvygMUvQ7KkdSN9t
DomainVerification=DQ7M7WLZW72ELG6AO8S0GY5K6VKXPFSC5EAXHC0QEI1DJ8CRHSASSAU3LHC1T...
MS=ms67564859
SPF v=spf1 include:_spf.uu.se include:spf.gdmnet.se include:spf.mandrillapp.com incl...
HARICA-cQh52N6HOPqGIQdgynn
facebook-domain-verification=4zaw0jgfc6g0x7e6c83i3b84h67xci
jamf-site-verification=aYs9tnbsHulNUIKF_jAVpg
Zoom=7542785
google-site-verification=HnkQ-hJR3pxzVnu5rrxj67UPyTYsauuEMInXwWCHIrk
CAALookup not available with standard resolver
Resolved in 58 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.

A
Redirect Chain
1 redirect(s), 321 ms total
PASS
1 redirect(s), 321 ms total
Info::
Single redirect
Got: https://uu.se → https://www.uu.se/ (301)
Info::
WWW normalization redirect

https://uu.se

127 ms · HTTP/1.1

301

https://www.uu.se/

194 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://uu.se301127 msHTTP/1.1baffin-bay-inlet
2https://www.uu.se/200194 msHTTP/1.1baffin-bay-inlet

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (30 ms)
PASS
IPv6 reachable (30 ms)
Info::
IPv6 is configured and reachable at 2a0a:56c4::b9c3:5d83
Got: 30 ms connect
IPv6 Ready
AAAA Records 2a0a:56c4::b9c3:5d83 Connection Reachable (30 ms)
A+
Crawlability
robots.txt present, sitemap with 18 URLs
PASS
robots.txt present, sitemap with 18 URLs
Info::
robots.txt is present
Got: 2626 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 18 entries
Info::
Sitemap index with 18 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2626 B Sitemaps referenced 1 User-agents SiteimproveBot, SiteimproveBot-Crawler, * Blocking No — crawling allowed
User-agent: *
Disallow: /imagedescription.action2
Disallow: /checkoutimages.action2
Disallow: /mybookmarks/addbookmark.action2
Disallow: /mybookmarks/removebookmark.action2
Disallow: /*.html.printable
Disallow: /*?contactPage=*
Disallow: /*?contactUserId=*
Disallow: /*?sv.state=*
Disallow: /*?state=keepAlive
Disallow: /*&state=keepAlive
Disallow: /*?profiling=*
Disallow: /*.pdf?properties=*
Disallow: /*?addToCart=true
Disallow: /*;jsessionid=*

Sitemap: https://www.uu.se/sitemaps/index.xml

Disallow: /*?sv.target*
Disallow: /*tarContentId=*
Disallow: /*tarContentId*
Disallow: /appresource
Disallow: /en/staff/centre
Disallow: /en/staff/department
Disallow: /en/staff/service-and-tools/tools-and-guides/administer-your-personal-matters/system-maintenance-in-progress
Disallow: /en/staff/service-and-tools/tools-and-guides/administer-your-personal-matters/technical-interruption-in-primula-web
Disallow: /medarbetare/centrum
Disallow: /medarbetare/institution
Disallow: /medarbetare/stod-och-verktyg/verktyg-och-guider/primula---administrera-dina-personalarenden/systemunderhall-pagar-i-primula-webb
Disallow: /medarbetare/stod-och-verktyg/verktyg-och-guider/primula---administrera-dina-personalarenden/tekniskt-avbrott-i-primula-webb
Disallow: /redaktor-kopiering
Disallow: /webbutbildning
Disallow: /en/course-for-web-editors
Disallow: /system
Disallow: /utbildning/program/mer-infor-anmalan

User-agent: SiteimproveBot
Disallow: /imagedescription.action2
Disallow: /checkoutimages.action2
Disallow: /mybookmarks/addbookmark.action2
Disallow: /mybookmarks/removebookmark.action2
Disallow: /*.html.printable
Disallow: /*?contactPage=*
Disallow: /*?contactUserId=*
Disallow: /*?sv.state=*
Disallow: /*?state=keepAlive
Disallow: /*&state=keepAlive
Disallow: /*?profiling=*
Disallow: /*.pdf?properties=*
Disallow: /*?addToCart=true
Disallow: /*;jsessionid=*
Disallow: /*?sv.target*
Disallow: /*tarContentId=*
Disallow: /*tarContentId*
Disallow: /appresource
Disallow: /utbildning/program/mer-infor-anmalan

User-agent: SiteimproveBot-Crawler
Disallow: /imagedescription.action2
Disallow: /checkoutimages.action2
Disallow: /mybookmarks/addbookmark.action2
Disallow: /mybookmarks/removebookmark.action2
Disallow: /*.html.printable
Disallow: /*?contactPage=*
Disallow: /*?contactUserId=*
Disallow: /*?sv.state=*
Disallow: /*?state=keepAlive
Disallow: /*&state=keepAlive
Disallow: /*?profiling=*
Disallow: /*.pdf?properties=*
Disallow: /*?addToCart=true
Disallow: /*;jsessionid=*
Disallow: /*?sv.target*
Disallow: /*tarContentId=*
Disallow: /*tarContentId*
Disallow: /appresource
Disallow: /utbildning/program/mer-infor-anmalan
sitemap.xml 200 OK
Type Sitemap Index URLs 18 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
uu.se — via Abion AB, 40 years, 3 months old
PASS
uu.se — via Abion AB, 40 years, 3 months old
Info::
Domain registered until Dec 31, 2026 (8 months remaining)
Info::
Registrar: Abion AB
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.
Domain expiry

198 days

December 31, 2026

SSL certificate

31 days

Issued by Let's Encrypt

Domain age

40 years, 3 months

Registered August 3, 1986

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2a0a:56c4::b9c3:5d83

Registrar

Abion AB

Unlocked 3 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 Abion AB
Created August 3, 1986 (40 years, 3 months ago)
Expires December 31, 2026 (8 months)
Last Updated December 24, 2025
Name Servers dns1.uu.se, dns2.uu.se, dns3.uu.se
Registrant CT-694173855
Hosting
IP Address 2a0a:56c4::b9c3:5d83
Data source: whois (0.7s)

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

A+
HTTP Probe Timing
Total 244 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
58 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
30 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
33 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
244 ms
Total Time Total request time from DNS lookup through full response.
244 ms

Connection waterfall

DNS Lookup 58 ms TCP Connect 30 ms TLS Handshake 33 ms Server Processing 124 ms Content Transfer 0 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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