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https://noaa.gov

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
76
GRADE
C
FIX
2
REVIEW
3
PASS
4
INFO
0
Probed from Sao Paulo, Brazil
301 Moved Permanently
Checks
9
4 PASS 3 REVIEW 2 FIX
F
IPv6 Readiness
Action
IPv6 records exist but unreachable
FIX
IPv6 records exist but unreachable
Warning::
IPv6 DNS records exist but server is not reachable
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
Got: 2610:20:8000:8c04::24, 2610:20:8800:8c00::24
Info::
IPv6 connection error
Got: dial tcp6 [2610:20:8000:8c04::24]:443: connect: no route to host
IPv6 Misconfigured
AAAA Records 2610:20:8000:8c04::24, 2610:20:8800:8c00::24 Connection UNREACHABLE

Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.

Why this matters

Advertising IPv6 (AAAA records) without a reachable server means IPv6-preferring clients silently fail every connection.

Learn more ▾

Modern browsers prefer IPv6 if AAAA exists (Happy Eyeballs algorithm). If the IPv6 server isn't reachable, browsers fall back to IPv4 — but with seconds of added latency per request. Either fix IPv6 reachability or remove the AAAA records.

Source: RFC 8305 (Happy Eyeballs)

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), 1196 ms total
REVIEW
1 redirect(s), 1196 ms total
Info::
Single redirect
Got: https://noaa.gov → https://www.noaa.gov/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1196 ms total
Got: 1196 ms

https://noaa.gov

699 ms · HTTP/1.1

301

https://www.noaa.gov/

497 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://noaa.gov301699 msHTTP/1.1Apache
2https://www.noaa.gov/200497 msHTTP/1.1Apache

See the visual redirect chain in the HTTP Probe tab →

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.noaa.gov/
200https://noaa.gov/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://noaa.gov/ → https://www.noaa.gov/

Consistent

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

Certificate validity

45
days left
0d 30d 60d 90d+

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A
DNS Records
2 A records, 1090 ms lookup
PASS
2 A records, 1090 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 137.75.88.7, 137.75.88.52
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2610:20:8000:8c04::24, 2610:20:8800:8c00::24
Info::
3 nameserver(s) configured
Got: ns-01.noaa.gov, ns-02.noaa.gov, ns-03.noaa.gov
Info::
5 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 (1090 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 1090 ms
A137.75.88.7, 137.75.88.52
AAAA2610:20:8000:8c04::24, 2610:20:8800:8c00::24
CNAME—
NSns-01.noaa.gov, ns-02.noaa.gov, ns-03.noaa.gov
MX
10 ASPMX.L.GOOGLE.COM
20 ALT2.ASPMX.L.GOOGLE.COM
20 ALT1.ASPMX.L.GOOGLE.COM
40 ALT3.ASPMX.L.GOOGLE.COM
40 ALT4.ASPMX.L.GOOGLE.COM
TXT
MS=ms58948194
38jln0l23i1dosei72g2118kh8
4p64i97hkh56l3019mr2jt59m5
5fikk85qth4glfn7gjlfhps5lg
5t72mlvrc58omhkioejvknkdv4
65u3ikfk9aal59qqat7d4burjg
6kmuuh8h1cnnvmo0jiha6c4put
8a1fs3lb5ofdh0rg4rkt4or47d
agh09vo5p4okivaus2eemo0560
bpt25c606kitfrsm1js9pa39uj
bq7nfpaf0ul91dk2h0aqtvs0fk
cr487ajncv2bt7ukias1t7jrtf
ebo09fqhu8jrjbrr2q0kp0ue38
h9ihjiq6si8jvuev03aarnblik
h9rvsjncbb4p6nskq754m4d030
hiu69kfi6er21jh9jnm1dqslmr
icsspgfokcnpncvdbehbe5t5u4
jkrb63gop4200qdglch6mrrigt
kjdt969ct1rpt5qe2ui7qplqi4
lovgmj95efm53f8dm8l33tqtkd
nqdspdl5ae38vu0qvnb1kck31j
ntad38mik3v7j7pbnnbul7umli
rlsjj64ar28180t7d3gf1bge48
rma10m3ktr6tmsnkl6qk1lq11b
uf8vmf9cdji72j99k0p08s4rmn
uu8rvttgkkhsqri0tmb48nnn2o
_k4s0fh6nekbudtjfqdi51giat4ukgoi
_ndhwuukby2mizc29ku7wkozm5fol6b7
_yy3kidedxo7p355zl2ny2vkapuht0tk
qr85gtkyffp8qw72sys0qt0nps1mvq5r
xj7g6kddr0mcv45f8gy45cc71jznbx88
apple-domain-verification=mkXNyD9G0JeTNzhD
docusign=b602f0ac-0fcc-4a56-818c-4727282d3d35
jamf-site-verification=LvhI-0-55SIPODOAlXQ1Rg
jamf-site-verification=V0LR-TQGDFhUEeOryr_P4Q
jamf-site-verification=_0HKHuolH1_RySV8D2SENw
docker-verification=887e9be6-39b9-49cb-a81d-d757f89aa5f0
miro-verification=d9effd8556fa2f065fb842704007c815c3c08a90
google-site-verification=aNcHfDRvqETa0O8Ov1cnUi_xRyv790pE05gLz07bb80
google-site-verification=y6d10AgFowiDbrRahi1VTEEQ6SWq2lUGO1RaahraEaE
_globalsign-domain-verification=11adxk0btv8mi7GiRacRaI9Mh5yFTm0zaO661LK_-O
_globalsign-domain-verification=4sb-6QzBp3tzsMDDDZCZ5eRfzreasjMtAGtTC40ACz
_globalsign-domain-verification=7HYSBVYWu06Bq9Lu_Mo-l0V9WrUUG4qDXf-Wre4Me0
_globalsign-domain-verification=EkeEUzVEdHxpmz9oj4HdaKJOyr0yFaZuGM5T24zHgH
_globalsign-domain-verification=L0E33WT0_ulkIQXjbcmLHym6F75aTxrFrzqbGHf86b
_globalsign-domain-verification=URGXBZ8iJ52XgEn8h1s3Tmfu_8g0NEAJjBNT13BhCd
_globalsign-domain-verification=fMxP4j63Z_8XN8wHTyiaoAo6oBpi0ovoHs9sr6u7CR
_globalsign-domain-verification=g7lP4Z2-b7gIQ8kJv8Ro5tMV2SLcE5eboZNK6Fr0GI
_globalsign-domain-verification=grXkTmHxW4veQqxaTb7gMVZERHg5vqUyvziZ2d7miz
_globalsign-domain-verification=q4T0TQVY1vDqerKP-47vqn33rBovmcwgHssPTAAGk4
_globalsign-domain-verification=z9PJsp5h6m6P025rbGgyCa378u2dv7A1c-0Lqq1bDT
atlassian-domain-verification=egzuQjgGNamI0CukY/xaGisJ5BNdWzbEwkTjZZfR2oWeQSx35L...
SPF v=spf1 ip4:107.20.210.250/32 ip4:52.1.14.157/32 ip4:140.172.0.0/16 ip4:140.208.0...
CAALookup not available with standard resolver
Resolved in 1090 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.

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
robots.txt present, sitemap with 3 URLs
PASS
robots.txt present, sitemap with 3 URLs
Info::
robots.txt is present
Got: 2326 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 3 entries
Info::
Sitemap index with 3 child sitemaps
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 2326 B Sitemaps referenced 0 User-agents * Blocking No — crawling allowed
#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

# Do not follow facets links
Disallow: /*?f[*
Disallow: /*?f%5B*
Disallow: /*&f[*
Disallow: /*&f%5B*
# Do not follow image download links
Disallow: /media/image_download/*
Disallow: /media/ngdl/download-photo/*
# Do not follow Digital Collection Search pages
Disallow: /digital-collections/search/
sitemap.xml 200 OK
Type Sitemap Index URLs 3 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
noaa.gov — via get.gov, 28 years, 11 months old
PASS
noaa.gov — via get.gov, 28 years, 11 months old
Info::
Domain registered until Aug 4, 2026 (3 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: get.gov
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

22 days

August 4, 2026

SSL certificate

45 days

Issued by Let's Encrypt

Domain age

28 years, 11 months

Registered October 2, 1997

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2610:20:8000:8c04::24

Registrar

get.gov

Unlocked 3 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 registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar get.gov
Created October 2, 1997 (28 years, 11 months ago)
Expires August 4, 2026 (3 months)
Last Updated August 9, 2025
Name Servers ns-01.noaa.gov, ns-02.noaa.gov, ns-03.noaa.gov
DNSSEC Enabled
Registrant REDACTED FOR PRIVACY
Hosting
IP Address 2610:20:8000:8c04::24
Data source: rdap (0.5s)

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

Connection waterfall

DNS Lookup 223 ms TCP Connect 117 ms TLS Handshake 240 ms Server Processing 118 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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