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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
82
GRADE
B
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Santa Clara, United States
200 OK
Checks
9
5 PASS 4 REVIEW
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

C
Crawlability
Action
robots.txt present, sitemap with 155 URLs
REVIEW
robots.txt present, sitemap with 155 URLs
Info::
robots.txt is present
Got: 1979 bytes
Critical::
robots.txt blocks all crawlers
Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 155 entries
Info::
Sitemap index with 155 child sitemaps
Info::
robots.txt references sitemap

Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.

Why this matters

Disallow: / in robots.txt blocks every search crawler — the site becomes invisible in organic search.

Learn more ▾

Common deployment mistake: a staging robots.txt with `User-agent: * / Disallow: /` ships to prod. The site falls out of search results within days. Verify your robots.txt is the production-intended version. If this is intentional (private site), no action needed.

Source: Google Search Central

robots.txt 200 OK
Size 1979 B Sitemaps referenced 5 User-agents Alexabot, archive.org_bot, bingbot, DuckDuckBot, Googlebot-Image, YandexImages, BingPreview, Discordbot, HatenaBlog-bot, PetalBot, Pinterest, Yandex, Yeti, magpie-crawler, Googlebot-Mobile, msnbot, redditbot, Slackbot, snapchat, YandexVideoParser, ZoomBot, Adsbot-Google, Google-Site-Verification, Googlebot-News, Mediapartners-Google, Pingdom, Twitterbot, coccocbot, Google-Sitemaps, Googlebot, Slurp, wp.com, bitlybot, facebookexternalhit, NAVER, baiduspider, gsa-crawler, *, AppleBot, Googlebot-Video, ia_archiver Blocking Yes — all crawlers blocked
User-agent: Adsbot-Google
User-agent: Alexabot
User-agent: AppleBot
User-agent: archive.org_bot
User-agent: baiduspider
User-agent: bitlybot
User-agent: bingbot
User-agent: BingPreview
User-agent: coccocbot
User-agent: Discordbot
User-agent: DuckDuckBot
User-agent: facebookexternalhit
User-agent: Google-Site-Verification
User-agent: Google-Sitemaps
User-agent: Googlebot
User-agent: Googlebot-Image
User-agent: Googlebot-Mobile
User-agent: Googlebot-News
User-agent: Googlebot-Video
User-agent: gsa-crawler
User-Agent: HatenaBlog-bot
User-agent: ia_archiver
User-agent: Mediapartners-Google
User-agent: msnbot
User-agent: NAVER
User-agent: PetalBot
User-agent: Pingdom
User-agent: Pinterest
User-agent: redditbot
User-agent: Slackbot
User-agent: Slurp
User-agent: snapchat
User-agent: Twitterbot
User-agent: wp.com
User-agent: Yandex
User-agent: YandexImages
User-agent: YandexVideoParser
User-agent: Yeti
User-agent: ZoomBot
Disallow: /gp/
Disallow: /report_abuse.gne
Disallow: /abuse
Disallow: /images/*
Disallow: /apps/*
Disallow: /tools/demos/*
Disallow: /search
Disallow: /services/oauth
Disallow: /groups/10millionphotos/
Disallow: /photos/youpy/
Disallow: /photos/i_love_u_get_away_from_me/
Disallow: /faves-i_love_u_get_away_from_me/
Disallow: /photos/gbachelie/
Disallow: /photos/archivesact/6011019532/nearby/
Disallow: /yss_fragment.gne
Disallow: /photos/tags/*/page*
Disallow: /photos/*/lightbox/
Disallow: /groups/*/lightbox/
Disallow: /explore/*/lightbox/

User-agent: magpie-crawler
Disallow: /

User-agent: *
Disallow: /

Sitemap: https://www.flickr.com/sitemap/index/users/sitemap-index-users-00000000.xml.gz
Sitemap: https://www.flickr.com/sitemap/index/tags/sitemap-index-tags-00000000.xml.gz
Sitemap: https://www.flickr.com/sitemap/index/sets/sitemap-index-sets-00000000.xml.gz
Sitemap: https://www.flickr.com/sitemap/index/photos/sitemap-index-photos-00000000.xml.gz
Sitemap: https://www.flickr.com/sitemap/index/groups/sitemap-index-groups-00000000.xml.gz
sitemap.xml 200 OK
Type Sitemap Index URLs 155 entries Valid XML Yes
Child Sitemaps:
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.flickr.com/
200https://flickr.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://flickr.com/ → https://flickr.com/

Consistent

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

Certificate validity

261
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
4 A records, 36 ms lookup
PASS
4 A records, 36 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 108.139.10.41, 108.139.10.84, 108.139.10.98, 108.139.10.73
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-1244.awsdns-27.org, ns-1683.awsdns-18.co.uk, ns-421.awsdns-52.com, ns-573.awsdns-07.net
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
Info::
DNS resolution time: 36 ms
Got: 36 ms
A108.139.10.41, 108.139.10.84, 108.139.10.98, 108.139.10.73
AAAA—
CNAME—
NSns-1244.awsdns-27.org, ns-1683.awsdns-18.co.uk, ns-421.awsdns-52.com, ns-573.awsdns-07.net
MX
10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 alt2.aspmx.l.google.com
40 aspmx2.googlemail.com
50 aspmx3.googlemail.com
TXT
amazonses:fs+dlhaoumf7/MsQOuSQGEmmZp21qPyTRBMyZZJcVIE=
google-site-verification=AfO5QqWdCBeh3GDipxTHvznM6-xyiY1LEtqaveo139Q
google-site-verification=vifcpDc9v6AtY07tcbYo2qsDIJBhCSbK-_t31zCRWtQ
stripe-verification=5f464c3049fdff3a66c89326e235aa36184f9c2cfcd34081f4c26abf7f31...
SPF v=spf1 include:_spf.flickr_com._d.easydmarc.pro ~all
CAALookup not available with standard resolver
Resolved in 36 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
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://flickr.com

https://flickr.com

99 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://flickr.com20099 msHTTP/1.1
A+
Domain Intelligence
flickr.com — via GoDaddy Corporate Domains, LLC, 22 years, 8 months old, hosted on AWS
PASS
flickr.com — via GoDaddy Corporate Domains, LLC, 22 years, 8 months old, hosted on AWS
Info::
Domain registered until Nov 22, 2026 (7 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: GoDaddy Corporate Domains, 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

132 days

November 22, 2026

SSL certificate

261 days

Issued by Amazon

Domain age

22 years, 8 months

Registered November 22, 2003

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

108.139.10.73

Registrar

GoDaddy Corporate Domains, LLC

Unlocked 4 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 GoDaddy Corporate Domains, LLC
Created November 22, 2003 (22 years, 8 months ago)
Expires November 22, 2026 (7 months)
Last Updated October 23, 2025
Name Servers ns-1244.awsdns-27.org, ns-1683.awsdns-18.co.uk, ns-421.awsdns-52.com, ns-573.awsdns-07.net
DNSSEC Not enabled
Hosting
IP Address 108.139.10.73
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
Data source: rdap (0.2s)

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

Connection waterfall

DNS Lookup 6 ms TCP Connect 2 ms TLS Handshake 5 ms Server Processing 87 ms Content Transfer 1 ms
A
CDN & Delivery
AWS CloudFront (Miss from cloudfront)
PASS
AWS CloudFront (Miss from cloudfront)
Info::
Site is served via AWS CloudFront CDN (edge: SFO5-P2)
Got: x-amz-cf-id: 2BVD7WiohQnJez23QOJa6mv_9Ru-MM1SZDQxuMabC8nyLo0Ns_B_HA==
Info::
CDN cache status: Miss from cloudfront
CDN Detected: AWS CloudFront
Provider AWS CloudFront Cache Status Miss from cloudfront Evidence x-amz-cf-id: 2BVD7WiohQnJez23QOJa6mv_9Ru-MM1SZDQxuMabC8nyLo0Ns_B_HA==
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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