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https://alternativeto.net

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
88
GRADE
B
FIX
2
REVIEW
1
PASS
6
INFO
0
Probed from Santa Clara, United States
200 OK
Checks
9
6 PASS 1 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: 2606:4700:3108::ac42:2bac, 2606:4700:3108::ac42:2854
Info::
IPv6 connection error
Got: dial tcp6 [2606:4700:3108::ac42:2bac]:443: connect: network is unreachable
IPv6 Misconfigured
AAAA Records 2606:4700:3108::ac42:2bac, 2606:4700:3108::ac42:2854 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)

F
HTTP Probe Timing
Action
Total 16100 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
FIX
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
7 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
5 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
11 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
10.73 s
Total Time Total request time from DNS lookup through full response.
16.10 s

Connection waterfall

DNS Lookup 7 ms TCP Connect 5 ms TLS Handshake 11 ms Server Processing 10.70 s Content Transfer 5.37 s
B
TLS Certificate Expiry & Recommendations
79 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

79
days left
0d 30d 60d 90d+

Recommended actions

  • Submit your domain to hstspreload.org to be added to the Chrome preload list
  • 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
2 A records, 8 ms lookup
PASS
2 A records, 8 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 172.66.40.84, 172.66.43.172
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:3108::ac42:2bac, 2606:4700:3108::ac42:2854
Info::
2 nameserver(s) configured
Got: bill.ns.cloudflare.com, jasmine.ns.cloudflare.com
Info::
7 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: 8 ms
Got: 8 ms
A172.66.40.84, 172.66.43.172
AAAA2606:4700:3108::ac42:2bac, 2606:4700:3108::ac42:2854
CNAME—
NSbill.ns.cloudflare.com, jasmine.ns.cloudflare.com
MX
10 aspmx.l.google.com
20 alt2.aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx4.googlemail.com
30 aspmx5.googlemail.com
30 aspmx3.googlemail.com
TXT
MS=ms45441512
google-site-verification=fB62psPtgS4sKTPJMIJM0Bi_9tyFuRTf1khR64otkKo
rtfnekl4r54n8fvlobiqljuugc
SPF v=spf1 a include:_spf.google.com include:mailgun.org include:sendgrid.net includ...
yandex-verification: b16fe5713c9165f2
CAALookup not available with standard resolver
Resolved in 8 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://alternativeto.net

https://alternativeto.net

965 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://alternativeto.net200965 msHTTP/1.1cloudflare
A+
Crawlability
robots.txt present, sitemap with 19 URLs
PASS
robots.txt present, sitemap with 19 URLs
Info::
robots.txt is present
Got: 1080 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 19 entries
Info::
Sitemap index with 19 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1080 B Sitemaps referenced 1 User-agents Mediapartners-Google, * Blocking No — crawling allowed
# Robots.txt
User-agent: Mediapartners-Google 
Disallow:

User-agent: *
Disallow: /outgoing/
Disallow: /admin/
Disallow: /share/
Disallow: /user/
Disallow: /tag/
Disallow: /UserEdit.aspx
Disallow: /Manage/
Disallow: /manage-item/
Disallow: /manage-add-alternative/
Disallow: /manage/
Disallow: /account/
Disallow: /hello/
Disallow: /hello
Disallow: /discussions/
Disallow: /list/EditCustomItemList/
Disallow: /list/save/
Disallow: /browse/search/
Disallow: /auth/
Disallow: /api/auth/
Disallow: /api/
Disallow: /cdn-cgi/
Disallow: /_next/data/*.json*
Disallow: /_next/static/chunks/modern-filter-bar*
Disallow: /*?*mf=*
Disallow: /*?*lw=*
Disallow: /*?*nw=*
Disallow: /*?*page=*
Disallow: /*?*sort=*
Disallow: /login/
# Block if 'feature' has 2+ values (one comma)
Disallow: /*feature=*,*
# Block if 'platform' has 2+ values (one comma)
Disallow: /*platform=*,*
# Block if 'feature' has 2+ values (one commas)
Disallow: /*feature=*%2C*
# Block if 'platform' has 2+ values (one commas)
Disallow: /*platform=*%2C*


Sitemap: https://alternativeto.net/sitemaps-ssl/sitemap-map.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 19 entries Valid XML Yes
Child Sitemaps:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.alternativeto.net/
200https://alternativeto.net/

Preferred variant: non-www

HTTP → HTTPS

301http://alternativeto.net/ → https://alternativeto.net/

Consistent

A+
Domain Intelligence
alternativeto.net — via 1API GmbH, 18 years, 6 months old, hosted on Cloudflare
PASS
alternativeto.net — via 1API GmbH, 18 years, 6 months old, hosted on Cloudflare
Info::
Domain registered until Jan 18, 2032 (5 years, 9 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: 1API GmbH
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: Cloudflare
Got: AS13335
Domain expiry

2043 days

January 18, 2032

SSL certificate

79 days

Issued by Google Trust Services

Domain age

18 years, 6 months

Registered January 18, 2008

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS13335

172.66.43.172

Registrar

1API GmbH

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 1API GmbH
Created January 18, 2008 (18 years, 6 months ago)
Expires January 18, 2032 (5 years, 9 months)
Last Updated November 23, 2025
Name Servers bill.ns.cloudflare.com, jasmine.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 172.66.43.172
ASN AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.1s)

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
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: SJC)
Got: cf-ray: 9f0820354ae85c1c-SJC
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9f0820354ae85c1c-SJC
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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