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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
86
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.rsc.org/
200https://rsc.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://rsc.org/ → https://www.rsc.org/

Consistent

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

Certificate validity

73
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, 82 ms lookup
PASS
1 A records, 82 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 52.31.103.110
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
6 nameserver(s) configured
Got: a1-90.akam.net, a28-64.akam.net, a22-67.akam.net, a6-66.akam.net, a7-67.akam.net, a3-65.akam.net
Info::
2 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: 82 ms
Got: 82 ms
A52.31.103.110
AAAA—
CNAME—
NSa1-90.akam.net, a28-64.akam.net, a22-67.akam.net, a6-66.akam.net, a7-67.akam.net, a3-65.akam.net
MX
10 eu-smtp-inbound-1.mimecast.com
10 eu-smtp-inbound-2.mimecast.com
TXT
MS=ms16735680
MS=ms48193102
atlassian-domain-verification=-3LQBDgJTX7pUVyv8d7smY8GTnoRuZ8d2C0PgVyxvNQz9zRI4v...
lovable_verification=Z0qbKniTTDLcS8wFZeiz
sv5d3g1w28m8lzwxwhmjh0p282zbbq63
fq8mrqsy6cmhwvl98n44v012smr4d8dv
onetrust-domain-verification=f51eaa9ef0fe46eabdfa2cbd169f9a46
sophos-domain-verification=6435915acc806b91de732dea5ca3f2895879e708e0b7cb0d6f7a6...
z1njbshlm0126sywdfl9dtzvpp67ymqm
ses_domain_verification = CRDvM9uvWCF4NLIkJ7lvfKfthlvFYw5i/nBO1NQGJ2g=
_8ee8fbc500fd7550e7cac474510ecd82.sdgjtdhdhz.acm-validations.aws.
nngtbz97bx2dh7hq91r3n1pr6gvmbbq5
ivnbta4doml7fuho7t5uhsb5ue
google-site-verification=HM2HHLevaszSuedN_LE3UpjFoHxc1Uufu7S_eKzkghI
apple-domain-verification=NCZ4d0nmcntXWHzx
canva-site-verification=gq-UWsS-vHONOjdPXwF-2w
t8wc8mdcjnhb16444qlpsq364y7ygl62
l10kvz100xtwdfq5lfn2zpmp4xw7v3hy
miro-verification=25163c5b869973b59bca2f90f562e5ae2916fcaa
0OnFhDXtUnDltu0JK1B8aBbMrJ/9P6MEYLpMoOXslvPXiPCewbZLL3oDvHvR8calt7jqrYSkLqfpLoqu...
_globalsign-domain-verification=FfcMiT6K33eLcc_BCTbKlrAoP6GT784fFgSvVq1jAx
_fa5422c17361986a9b27bde85ac7c6d9.historical-collection.rsc.org.
fr0z912zwkvmjmrycrb0mnbqkbt79kq4
SPF v=spf1 redirect=7zu651uf._spf._d.mim.ec
google-site-verification=WmYilO5lM8Vz6-6gaQWwyNHVGiVKp7GNSJqEtYUG3qk
google-site-verification=GUBQBUB4UYaCCC5mloNeHAMOBvtWKQDnymPQYHbXFuk
globalsign-domain-verification=0BF0B7C56B0EB0C67FE08BF84EFE9669
_ofqkrn9j012cp2bb790fbb6q4fwu5ke
MS=E9015CFA1FA5382B1800C8B255C3765172561891
h5rnlrlmvo5eclt6e2i4mkkvfu
bmg3xvp0b1vqqph6fnlcqsm2twfcvs77
2ce17811ee
CAALookup not available with standard resolver
Resolved in 82 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), 277 ms total
PASS
1 redirect(s), 277 ms total
Info::
Single redirect
Got: https://rsc.org → https://www.rsc.org/ (301)
Info::
WWW normalization redirect

https://rsc.org

108 ms · HTTP/1.1

301

https://www.rsc.org/

169 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://rsc.org301108 msHTTP/1.1
2https://www.rsc.org/200169 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 4168 URLs
PASS
robots.txt present, sitemap with 4168 URLs
Info::
robots.txt is present
Got: 2562 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 4168 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2562 B Sitemaps referenced 1 User-agents *, Slurp, AhrefsBot, AhrefsSiteAudit, gsa-crawler, Guidebot Blocking No — crawling allowed
##ACAP version=1.0

# allow contracted search
User-agent: gsa-crawler
Disallow:

# block GuideBot
User-agent: Guidebot
Disallow: /

# block robots
User-agent: *
Disallow: /Membership/Memberzone/
Disallow: /is/
Disallow: /publishing/journals/rssfeed.asp
Disallow: /pdf/members/newsletters/womenchemists_apr02.pdf
Disallow: /AboutUs\News/PressReleases/2009/UVToothBleaching.asp
Disallow: /Publishing/ChemScience/Volume/2009/03/Turning_the_light_off_on_tooth_bleaching.asp
Disallow: /Publishing/EdSymp/
Disallow: /Publishing/ATHENS_index.asp
Disallow: /images/EdSymp2010_reportforweb_tcm18-185058.pdf
Disallow: /Labs/
Disallow: /placesofchemistry/
Disallow: /rsc-id/

# Editors symposium files
Disallow: /images/WorkshopA_Impact_tcm18-177392.ppt
Disallow: /images/WorkshopB_EditorialBoards_tcm18-177393.ppt
Disallow: /images/_WorkshopC_peer%20review%20workshop_tcm18-179104.ppt
Disallow: /images/WorkshopD_ChemSpider_tcm18-177395.ppt
Disallow: /images/WorkshopE_eplatform_tcm18-177396.ppt
Disallow: /images/WorkshopF_Intl%20Dev_tcm18-177397.ppt
Disallow: /images/WorkshopG_SUNAM_RSCEditors_tcm18-177398.ppt
Disallow: /images/WorkshopH_SocialMedia_tcm18-177399.ppt
Disallow: /images/WorkshopI_OpenAccess_tcm18-177400.ppt
Disallow: /images/WorkshopJ_CelinaRamjoue_tcm18-177401.ppt

# allow contracted search
ACAP-crawler: gsa-crawler
# User-agent: gsa-crawler
# block GuideBot
ACAP-crawler: Guidebot
# User-agent: Guidebot
ACAP-disallow-crawl: /
# Disallow: /
# block robots
ACAP-crawler: *
# User-agent: *
ACAP-disallow-crawl: /Membership/Memberzone/
ACAP-disallow-crawl: /Labs/
ACAP-disallow-crawl: /placesofchemistry/
# Disallow: /Membership/Memberzone/
ACAP-disallow-crawl: /is/
# Disallow: /is/
ACAP-disallow-crawl: /publishing/journals/rssfeed.asp
# Disallow: /publishing/journals/rssfeed.asp


# Yahoo crawl
User-agent: Slurp
crawl-delay: 30

#Conference Pages
Disallow: /membership/benefits/join_acs.asp
Disallow: /chemistryworld/subscribe_acs.asp

#Exam File for Robert Bowles
Disallow: /Education/SchoolStudents/Olympiad/paper2011.asp

# e-Membership
Disallow: /Membership/e-Membership/app-help.asp

#HD75942 11:11 08/02/2012
Disallow: /suppdata/

# Denial URLs

Disallow: /chemistryworld/_denial.asp
Disallow: /education/eic/_denial.asp
Disallow: /publishing/_denial.asp 
Disallow: /publishing/currentawareness/_denial.asp 
Disallow: /publishing/journals/_denial.asp
Disallow: /membership/_denial.asp

# Block AhrefsBot and AhrefsSiteAudit
User-agent: AhrefsBot
Disallow: /

User-agent: AhrefsSiteAudit
Disallow: /

Sitemap: https://www.rsc.org/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 4168 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
rsc.org — via Network Solutions, LLC, 33 years, 3 months old, hosted on AWS
PASS
rsc.org — via Network Solutions, LLC, 33 years, 3 months old, hosted on AWS
Info::
Domain registered until Jun 16, 2030 (4 years, 2 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: Network Solutions, LLC
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

1463 days

June 16, 2030

SSL certificate

73 days

Issued by Sectigo Limited

Domain age

33 years, 3 months

Registered June 17, 1993

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

52.31.103.110

Registrar

Network Solutions, LLC

Unlocked 6 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar Network Solutions, LLC
Created June 17, 1993 (33 years, 3 months ago)
Expires June 16, 2030 (4 years, 2 months)
Last Updated April 24, 2025
Name Servers a1-90.akam.net, a22-67.akam.net, a28-64.akam.net, a3-65.akam.net, a6-66.akam.net, a7-67.akam.net
DNSSEC Not enabled
Hosting
IP Address 52.31.103.110
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
Data source: rdap (0.4s)

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

Connection waterfall

DNS Lookup 33 ms TCP Connect 38 ms TLS Handshake 40 ms Server Processing 37 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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