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https://cancerresearchuk.org

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 3 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.

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

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.cancerresearchuk.org/
200https://cancerresearchuk.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://cancerresearchuk.org/ → https://cancerresearchuk.org:443/

Consistent

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

Certificate validity

158
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
3 A records, 108 ms lookup
PASS
3 A records, 108 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 16.61.55.165, 3.10.76.177, 13.41.62.126
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-1773.awsdns-29.co.uk, ns-885.awsdns-46.net, ns-1410.awsdns-48.org, ns-33.awsdns-04.com
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
Info::
DNS resolution time: 108 ms
Got: 108 ms
A16.61.55.165, 3.10.76.177, 13.41.62.126
AAAA—
CNAME—
NSns-1773.awsdns-29.co.uk, ns-885.awsdns-46.net, ns-1410.awsdns-48.org, ns-33.awsdns-04.com
MX
5 cancerresearchuk-org.mail.protection.outlook.com
TXT
_qydnb71cn3lqycnc1mtenmuxez97jlp
hpc5sj1r9xplb20nd3q43m1bzdhpb85j
rm_verify=b5ea71cdcf
g1fh5zpwprcz6cn2rq5gblvsb7lwx2t7
facebook-domain-verification=61rl1f9boyjhytks0jdex0hncnayfr
_exbcbqu4yx5x3py9lyawkwfuxanm7sj
cglw6w22gnjt39h39kgr4wf62r05rt02
5cfht3mshcf3trp03bh7jrkqcv6ddg69
ss0bz7586fsg4xxdmsyjqt8jcgyg8zrx
vc6k1223ptdlchvpy3s18lq144xv1slj
MS=ms18612172
khdfh0nr2q0wr7563tcm7b5pfq068q5y
np13rn98h5lpgjbndhr5gn31363b8xy0
s50n3srkhkz08lqgjwt4zj6zrjsxnbn4
40z41kzn43jd310vq6v9k622x3v9fxkx
bd66lyr72y3lq95qw2314t8vcy16lwps
_6vt5j2zihy4gglxz8kvsmr9pq7h2a4c
24zprsdb1b3ync7ywmsypc3vvn70cb95
6q77047g56cblw7j2h9j1bgxdfth47fl
google-site-verification=c1Vsqct8unmvZEnNTtoZZ_dDsq-qejygwotuVnfoupY
6b7bv6ky1d5gbp66fgqkqhcdj7n4z04l
s4bfybvmkvmrjl1lnmbtl3khph6h0vvb
mzm32j62qpf6tkkydk6p0ph763nnjhsp
g07kykmlvhp2d8vfzjxm1shy9n35w7nv
apple-domain-verification=IGJmYB4ReQOvnh8C421oNRDVuu5D-eZofJf6Y97qPBU
hgyx98b9cc79ztr03qm7h7qlsgl7wlyr
f9w7nn10vpy421nnf3pqmfsgth5pq3hq
x54b24q04j1j22dz1mvbjqzv9r9pk876
_gu3tif2ur9nnozx0ckdgutzqdo8p38j
wpv0g4gkpbw0kqrlm6jlrb2bxw3zd0v0
nnp90zxqqzmkn93bwvhdl46dwvfp0v3y
vnm8g3svr0c67s4xmgld8q209cc68364S
_i6zwxvcptwz9qmphgqpvbhyog72fmuo
y9ncngdcvrvk16m4gljshc7gvhhxh8lc
y468410l6rk4ybc5dnyrqnr1ycsmr58j
6sqc01vxxxwzn49y5jd2p6wxdq5f7z3q
0v1c9bt4vwkdmptx84wzz413s3xsc990
bnslp7wjbc8v3n5wkdr8hxl5l8fxr2hl
1ly9mvl98241ksqyw929gldgyy46f27c
1tn2p2x86m2jvp6wjvh9n8kf197vtmmd
facebook-domain-verification=4hzy2r2nmzkhsj084cd7fki46jeaa3
7g4q3fqrptyjf17dzs4js241j4v67c6t
wf7338jyn6pqbdzrjwlwtb841r6dh0hd
google-site-verification=PHwtSX75UKqvpzyPHmk4bGBzczkPu71eNXBD-GyiKbw
_ly5k70e1l8gd1shizgsvpgha4v9m2ut
dr0t5jj72k4t61lk8ffs081fj6rghv6n
_w8opp2p377zo21qi6gh2zwgfe2bmmpa
x1whvwl6r9qqx6y8z1dnvk64lkbbzfqx
v1n0kqhknmzc5fsg2zf7tsn4780hmj1m
m1gfkdpv7rscd8mr64mw9wcxtsrxh0ds
zdcmc5v22rdy0s5tc80j5xwl1ygcbf6g
m1rh31jnyk8f4zy25vlb01nmv62x0l9p
7msqnpj5xr4y5syw9g44m95dfl44hjgx
26m8th96q9myjm4zz46h7r7cvbwbwjh4
_e8bqk4zyvefuarzhyy6hu9bizyu1ny7
vxqr9nqtmryh46zfq0jqwjx316764nsk
fn1b7vvmlhfpmf35rchfpz383tm1bndy
zzhv3bsz0x6y1hglhy4wxp3pvz2rw432
ww43j1bp5rmj9lgjwr0x73qbpl0mj8yf
7d705306nddqnj1fppb3btq58hrlrjtx
45qbtsvh8vd17n794pf4cpj7z8zwk0tj
_wlakz6emublsj5fvgjt8dl2i84ycrmq
apple-domain-verification=ZIfJE9Gth65P2EaS
3rl4ld7tjl4sbpy967j2cr7y48vbxcxn
bv1by0fvhbpznqy9xqmzr6z10lghjjgg
SPF v=spf1 include:em9792.cancerresearchuk.org include:spf.protection.outlook.com in...
d4tgqmcxcgtg2plddnyjvcqtpdyypf12
CAALookup not available with standard resolver
Resolved in 108 ms

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), 137 ms total
PASS
1 redirect(s), 137 ms total
Info::
Single redirect
Got: https://cancerresearchuk.org → https://www.cancerresearchuk.org:443/ (301)
Info::
WWW normalization redirect

https://cancerresearchuk.org

86 ms · HTTP/1.1

301

https://www.cancerresearchuk.org:443/

50 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://cancerresearchuk.org30186 msHTTP/1.1awselb/2.0
2https://www.cancerresearchuk.org:443/20050 msHTTP/1.1Vercel

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 2 URLs
PASS
robots.txt present, sitemap with 2 URLs
Info::
robots.txt is present
Got: 2440 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 2 entries
Info::
Sitemap index with 2 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2440 B Sitemaps referenced 5 User-agents *, Twitterbot Blocking No — crawling allowed
User-Agent: *
Allow: /utilities/glossary/index.htm
Allow: /sites/default/files/about_cancer_deindex_sitemap.xml
Allow: /sites/default/files/styles/*
Disallow: /utilities/glossary/
Disallow: /*PrinterFriendly
Disallow: */prod_consump/
Disallow: /support-us/
Disallow: /cancer-subject/
Disallow: /career-level/
Disallow: /client/
Disallow: /content/
Disallow: /container-type/
Disallow: /content-department/
Disallow: /country/
Disallow: /event-type/
Disallow: /file/
Disallow: /file.html
Disallow: /gift-calculator-ranges/
Disallow: /gift-calculator-tags/
Disallow: /glossary/
Disallow: /phase-of-trial/
Disallow: /research-area/
Disallow: /research-type/
Disallow: /restriction-type/
Disallow: /site/
Disallow: /sites/default/files/
Disallow: /standard-content/
Disallow: /time-commitment/
Disallow: /treatment-type/
Disallow: /trial-status/
Disallow: /trial-type/
Disallow: /volunteer-role-environment/
Disallow: /volunteer-role-type/
Disallow: /includes/
Disallow: /misc/
Disallow: /modules/
Disallow: /profiles/
Disallow: /scripts/
Disallow: /themes/
Disallow: /uat/
Disallow: /CHANGELOG.txt
Disallow: /cron.php
Disallow: /INSTALL.mysql.txt
Disallow: /INSTALL.pgsql.txt
Disallow: /INSTALL.sqlite.txt
Disallow: /install.php
Disallow: /INSTALL.txt
Disallow: /LICENSE.txt
Disallow: /MAINTAINERS.txt
Disallow: /update.php
Disallow: /UPGRADE.txt
Disallow: /xmlrpc.php
Disallow: /file/apple-pay-imagejpg
Disallow: /aggregator/sources/21
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips/
Disallow: /node/add/
Disallow: /populate/
Disallow: /querytext/
Disallow: /search/
Disallow: /tstart/
Disallow: /user/register/
Disallow: /user/password/
Disallow: /user/login/
Disallow: /user/logout/
Disallow: /?q=admin/
Disallow: /?q=comment/reply/
Disallow: /?q=filter/tips/
Disallow: /?q=node/add/
Disallow: /?q=search/
Disallow: /?q=user/password/
Disallow: /?q=user/register/
Disallow: /?q=user/login/
Disallow: /?q=user/logout/
Disallow: /*?field_shop_geocode_latlon=*&items_per_page=*
Disallow: /*?f%5B0%5D=*
Disallow: /funding-for-researchers/our-funding-schemes?*
Crawl-delay: 10

User-Agent: Twitterbot
Allow: /sites/default/files/*

Sitemap: https://www.cancerresearchuk.org/sitemap.xml
Sitemap: https://raceforlife.cancerresearchuk.org/sitemap.xml
Sitemap: https://shop.cancerresearchuk.org/sitemap.xml
Sitemap: https://news.cancerresearchuk.org/sitemap.xml
Sitemap: https://cancerchat.cancerresearchuk.org/sitemapindex.ashx
sitemap.xml 200 OK
Type Sitemap Index URLs 2 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
cancerresearchuk.org — via CSC Corporate Domains, Inc., 25 years, 1 months old, hosted on AWS
PASS
cancerresearchuk.org — via CSC Corporate Domains, Inc., 25 years, 1 months old, hosted on AWS
Info::
Domain registered until Jul 27, 2026 (3 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: CSC Corporate Domains, Inc.
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: AWS
Got: AS16509
Domain expiry

9 days

July 27, 2026

SSL certificate

158 days

Issued by Amazon

Domain age

25 years, 1 months

Registered July 27, 2001

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

3.10.76.177

Registrar

CSC Corporate Domains, Inc.

Unlocked 4 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the domain or enable auto-renewal to prevent accidental expiry
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar CSC Corporate Domains, Inc.
Created July 27, 2001 (25 years, 1 months ago)
Expires July 27, 2026 (3 months)
Last Updated March 3, 2026
Name Servers ns-1410.awsdns-48.org, ns-1773.awsdns-29.co.uk, ns-33.awsdns-04.com, ns-885.awsdns-46.net
DNSSEC Not enabled
Hosting
IP Address 3.10.76.177
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
Data source: rdap (0.5s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

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.

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 111 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
35 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
25 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
26 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
111 ms
Total Time Total request time from DNS lookup through full response.
111 ms

Connection waterfall

DNS Lookup 35 ms TCP Connect 25 ms TLS Handshake 26 ms Server Processing 25 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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