Infrastructure - https://freesound.org BeaverCheck Audit

D

CDN & Delivery

Action

No CDN detected

FIX

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

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

Both www and non-www versions serve content

Got: Both variants return 200 Expected: One variant 301-redirects to the other

HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.freesound.org/

200https://freesound.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://freesound.org/ → https://freesound.org/

Consistent

B

TLS Certificate Expiry & Recommendations

71 days until leaf cert expires — 3 issues to address

REVIEW

Certificate validity

71

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, 50 ms lookup

PASS

1 A records, 50 ms lookup

Resolves to 1 IPv4 address(es)

Got: 37.27.227.73

Single A record — no DNS redundancy

Multiple A records provide failover if one server goes down.

No IPv6 (AAAA) records

3 nameserver(s) configured

Got: ns-124-a.gandi.net, ns-178-b.gandi.net, ns-94-c.gandi.net

2 mail exchanger(s) configured

CAA records not checked

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

SPF record present in TXT

DNS resolution time: 50 ms

Got: 50 ms

A	37.27.227.73
AAAA	—
CNAME	—
NS	ns-124-a.gandi.net, ns-178-b.gandi.net, ns-94-c.gandi.net
MX	10 spool.mail.gandi.net 50 fb.mail.gandi.net
TXT	SPF v=spf1 include:mail.zendesk.com include:amazonses.com include:smtp-rec.upf.edu ?... HARICA-CK339IcR1EWfbAMg8kE HARICA-hIHYuy0AsoOz6zTL4qb google-site-verification=vygxSajCMq3bveWYqZrgBK3NJ0WnhDjhrKsreP2p6VA
CAA	Lookup not available with standard resolver

Resolved in 50 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

No redirects — direct access

PASS

No redirects — direct access

Got: https://freesound.org

https://freesound.org

174 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://freesound.org	200	174 ms	HTTP/1.1	nginx/1.27.5

A+

Crawlability

robots.txt present, sitemap with 39 URLs

PASS

robots.txt present, sitemap with 39 URLs

robots.txt is present

Got: 509 bytes

sitemap.xml is present

sitemap.xml is valid XML

sitemap.xml contains 39 entries

Sitemap index with 39 child sitemaps

robots.txt references sitemap

robots.txt 200 OK

Size 509 B Sitemaps referenced 1 User-agents ClaudeBot, DotBot, Applebot, *, GPTBot Blocking No — crawling allowed

User-agent: *
Disallow: /browse/
Disallow: /search/
Disallow: /admin/
Disallow: /api/
Disallow: /apiv2/
Disallow: /usersViewSingle
Disallow: /samplesViewSingle
Disallow: /packsViewSingle
Disallow: /tagsViewSingle
Disallow: /ratings/
Disallow: /geotags/
Disallow: /tickets/
Disallow: /embed/
Disallow: /*similar/
Disallow: /contact/

User-agent: GPTBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: DotBot
Disallow: /

User-agent: Applebot
Disallow: /

Sitemap: https://freesound.org/sitemap.xml

sitemap.xml 200 OK

Type Sitemap Index URLs 39 entries Valid XML Yes

Child Sitemaps:

A+

Domain Intelligence

freesound.org — via Gandi SAS, 23 years, 8 months old, hosted on Hetzner

PASS

freesound.org — via Gandi SAS, 23 years, 8 months old, hosted on Hetzner

Domain registered until Dec 21, 2028 (2 years, 8 months remaining)

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.

Registrar: Gandi SAS

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.

Hosting: Hetzner

Got: AS24940

Domain expiry

919 days

December 21, 2028

SSL certificate

71 days

Issued by Let's Encrypt

Domain age

23 years, 8 months

Registered December 21, 2002

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Hetzner

ASN AS24940

37.27.227.73

Registrar

Gandi SAS

Unlocked 3 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 Gandi SAS

Created December 21, 2002 (23 years, 8 months ago)

Expires December 21, 2028 (2 years, 8 months)

Last Updated October 31, 2025

Name Servers ns-124-a.gandi.net, ns-178-b.gandi.net, ns-94-c.gandi.net

DNSSEC Not enabled

Hosting

IP Address 37.27.227.73

ASN AS24940 (HETZNER-AS, DE)

Provider Hetzner

Data source: rdap (0.7s)

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 313 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

PASS

DNS Lookup

44 ms

TCP Connect

44 ms

TLS Handshake

47 ms

Time to First Byte

224 ms

Total Time

313 ms

Connection waterfall

DNS Lookup 44 ms TCP Connect 44 ms TLS Handshake 47 ms Server Processing 88 ms Content Transfer 89 ms