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https://astm.org

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
94
GRADE
A
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
6 PASS 3 REVIEW
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.astm.org/
200https://astm.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

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

Consistent

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

Certificate validity

143
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
B
CDN & Delivery
AWS CloudFront (LambdaGeneratedResponse from cloudfront)
REVIEW
AWS CloudFront (LambdaGeneratedResponse from cloudfront)
Info::
Site is served via AWS CloudFront CDN (edge: MRS52-P4)
Got: x-amz-cf-id: 8Fqqq53VuAWzPE1HlV3VdxI0lpBdLSlkh0ldrEZnfLrL5n4X9Xu0JQ==
Info::
CDN cache status: LambdaGeneratedResponse from cloudfront
CDN Detected: AWS CloudFront
Provider AWS CloudFront Cache Status LambdaGeneratedResponse from cloudfront Evidence x-amz-cf-id: 8Fqqq53VuAWzPE1HlV3VdxI0lpBdLSlkh0ldrEZnfLrL5n4X9Xu0JQ==
A+
DNS Records
4 A records, 33 ms lookup
PASS
4 A records, 33 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 18.161.111.85, 18.161.111.18, 18.161.111.19, 18.161.111.89
Info::
Has 8 IPv6 (AAAA) record(s)
Got: 2600:9000:23d1:c200:1d:d45f:4300:93a1, 2600:9000:23d1:9200:1d:d45f:4300:93a1, 2600:9000:23d1:ee00:1d:d45f:4300:93a1, 2600:9000:23d1:2c00:1d:d45f:4300:93a1, 2600:9000:23d1:3c00:1d:d45f:4300:93a1, 2600:9000:23d1:ba00:1d:d45f:4300:93a1, 2600:9000:23d1:b800:1d:d45f:4300:93a1, 2600:9000:23d1:3e00:1d:d45f:4300:93a1
Info::
2 nameserver(s) configured
Got: udns2.cscdns.uk, udns1.cscdns.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: 33 ms
Got: 33 ms
A18.161.111.85, 18.161.111.18, 18.161.111.19, 18.161.111.89
AAAA2600:9000:23d1:c200:1d:d45f:4300:93a1, 2600:9000:23d1:9200:1d:d45f:4300:93a1, 2600:9000:23d1:ee00:1d:d45f:4300:93a1, 2600:9000:23d1:2c00:1d:d45f:4300:93a1, 2600:9000:23d1:3c00:1d:d45f:4300:93a1, 2600:9000:23d1:ba00:1d:d45f:4300:93a1, 2600:9000:23d1:b800:1d:d45f:4300:93a1, 2600:9000:23d1:3e00:1d:d45f:4300:93a1
CNAME—
NSudns2.cscdns.uk, udns1.cscdns.net
MX
20 extmaild.astm.org
30 extmaila.astm.org
TXT
anthropic-domain-verification-k1aw56=IgjiPcxKZEEx9kiote5RvWs06
beautifulai-site-verification=117aa464-3edc-4d9a-92b5-83150239882a
cisco-ci-domain-verification=372326fa1b497cf49fbf5c6fc9fd9ef148d159869a7c5dd8c67...
SPF v=spf1 include:spf1.astm.org include:spf2.astm.org include:spf3.astm.org -all
00DC0000000QKmp=1TBRP000000023R
google-site-verification=5ASwgqk0yoC7JfZXhU8MSqIt9wIV7dk4FpM5dcIu4Bo
00DO9000002ITnB=1TBO90000000HQf
zywave-domain-verification=XM1wFapax/QKNihwn/ZBK8VNflAUTE5K//QVawjXy18=
UK-federation-domain-verification=393ccc236421bf9cfbdd12fcd3fd5c00
IJQuZ//ViqCC1s43G+2ecQVtVkRb2hIRkkvTUz+9aG1CYtFBwUQgGpdBltm1JdzBEsR+3C8s+G2ayd0W...
status-page-domain-verification=7qdvkyw6gmml
atlassian-domain-verification=MnDGRTalCpT4L4kLQSbEz7lUzITWxd2tyy/VdHHruM6vTGymDP...
atlassian-domain-verification=OxsbIkeGaGaeTHrCApNffgTKF3NfnzFyfr/OYOAS1yaBv9SDl4...
MS=ms31507730
apple-domain-verification=4Dp6r0hZ0Uzjuca5
jamf-site-verification=i31mJAwcVNpmFnRzDR_E9Q
_globalsign-domain-verification=-2f4OJV09KbNKpJsjGqOEAHNSJJavfxLaUaJEC5gym
CAALookup not available with standard resolver
Resolved in 33 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), 766 ms total
PASS
1 redirect(s), 766 ms total
Info::
Single redirect
Got: https://astm.org → https://www.astm.org/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 766 ms total
Got: 766 ms

https://astm.org

134 ms · HTTP/1.1

301

https://www.astm.org/

632 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://astm.org301134 msHTTP/1.1CloudFront
2https://www.astm.org/200632 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (20 ms)
PASS
IPv6 reachable (20 ms)
Info::
IPv6 is configured and reachable at 2600:9000:23d1:c200:1d:d45f:4300:93a1, 2600:9000:23d1:9200:1d:d45f:4300:93a1, 2600:9000:23d1:ee00:1d:d45f:4300:93a1, 2600:9000:23d1:2c00:1d:d45f:4300:93a1, 2600:9000:23d1:3c00:1d:d45f:4300:93a1, 2600:9000:23d1:ba00:1d:d45f:4300:93a1, 2600:9000:23d1:b800:1d:d45f:4300:93a1, 2600:9000:23d1:3e00:1d:d45f:4300:93a1
Got: 20 ms connect
IPv6 Ready
AAAA Records 2600:9000:23d1:c200:1d:d45f:4300:93a1, 2600:9000:23d1:9200:1d:d45f:4300:93a1, 2600:9000:23d1:ee00:1d:d45f:4300:93a1, 2600:9000:23d1:2c00:1d:d45f:4300:93a1, 2600:9000:23d1:3c00:1d:d45f:4300:93a1, 2600:9000:23d1:ba00:1d:d45f:4300:93a1, 2600:9000:23d1:b800:1d:d45f:4300:93a1, 2600:9000:23d1:3e00:1d:d45f:4300:93a1 Connection Reachable (20 ms)
A+
Crawlability
robots.txt present, sitemap with 1 URLs
PASS
robots.txt present, sitemap with 1 URLs
Info::
robots.txt is present
Got: 138 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 1 entries
Info::
Sitemap index with 1 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 138 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-Agent: *
Allow: /
Disallow: /contentstack/components/dropdown
Disallow: /maintenance-mode

Sitemap: https://www.astm.org/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 1 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
astm.org — via CSC Corporate Domains, Inc., 32 years, 8 months old
PASS
astm.org — via CSC Corporate Domains, Inc., 32 years, 8 months old
Info::
Domain registered until Jan 12, 2027 (8 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.
Domain expiry

178 days

January 12, 2027

SSL certificate

143 days

Issued by DigiCert Inc

Domain age

32 years, 8 months

Registered January 13, 1994

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2600:9000:23d1:ba00:1d:d45f:4300:93a1

Registrar

CSC Corporate Domains, Inc.

Unlocked 2 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 CSC Corporate Domains, Inc.
Created January 13, 1994 (32 years, 8 months ago)
Expires January 12, 2027 (8 months)
Last Updated January 13, 2026
Name Servers udns1.cscdns.net, udns2.cscdns.uk
DNSSEC Not enabled
Hosting
IP Address 2600:9000:23d1:ba00:1d:d45f:4300:93a1
Data source: rdap (0.3s)

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 203 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
34 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.
29 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
204 ms
Total Time Total request time from DNS lookup through full response.
204 ms

Connection waterfall

DNS Lookup 34 ms TCP Connect 25 ms TLS Handshake 29 ms Server Processing 117 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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