Skip to content
https://rb.gy

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
95
GRADE
A
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from Madrid, Spain
302 Found
Checks
9
7 PASS 2 REVIEW
B
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 1738 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.

Learn more

A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.

Source: sitemaps.org / Google Search Central

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 1738 B Sitemaps referenced 0 User-agents Applebot-Extended, Bytespider, CCBot, ClaudeBot, GPTBot, meta-externalagent, *, Amazonbot, CloudflareBrowserRenderingCrawler, Google-Extended Blocking No — crawling allowed
# As a condition of accessing this website, you agree to abide by the following
# content signals:

# (a)  If a Content-Signal = yes, you may collect content for the corresponding
#      use.
# (b)  If a Content-Signal = no, you may not collect content for the
#      corresponding use.
# (c)  If the website operator does not include a Content-Signal for a
#      corresponding use, the website operator neither grants nor restricts
#      permission via Content-Signal with respect to the corresponding use.

# The content signals and their meanings are:

# search:   building a search index and providing search results (e.g., returning
#           hyperlinks and short excerpts from your website's contents). Search does not
#           include providing AI-generated search summaries.
# ai-input: inputting content into one or more AI models (e.g., retrieval
#           augmented generation, grounding, or other real-time taking of content for
#           generative AI search answers).
# ai-train: training or fine-tuning AI models.

# ANY RESTRICTIONS EXPRESSED VIA CONTENT SIGNALS ARE EXPRESS RESERVATIONS OF
# RIGHTS UNDER ARTICLE 4 OF THE EUROPEAN UNION DIRECTIVE 2019/790 ON COPYRIGHT
# AND RELATED RIGHTS IN THE DIGITAL SINGLE MARKET.

# BEGIN Cloudflare Managed content

User-agent: *
Content-Signal: search=yes,ai-train=no
Allow: /

User-agent: Amazonbot
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: CloudflareBrowserRenderingCrawler
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: meta-externalagent
Disallow: /

# END Cloudflare Managed Content


sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

B
TLS Certificate Expiry & Recommendations
64 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

64
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add includeSubDomains to the HSTS directive
  • 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
3 A records, 44 ms lookup
PASS
3 A records, 44 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 172.67.70.4, 104.26.2.41, 104.26.3.41
Info::
Has 3 IPv6 (AAAA) record(s)
Got: 2606:4700:20::681a:229, 2606:4700:20::ac43:4604, 2606:4700:20::681a:329
Info::
2 nameserver(s) configured
Got: kolton.ns.cloudflare.com, courtney.ns.cloudflare.com
Info::
1 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: 44 ms
Got: 44 ms
A172.67.70.4, 104.26.2.41, 104.26.3.41
AAAA2606:4700:20::681a:229, 2606:4700:20::ac43:4604, 2606:4700:20::681a:329
CNAME
NSkolton.ns.cloudflare.com, courtney.ns.cloudflare.com
MX
10 inbound-smtp.us-east-1.amazonaws.com
TXT
google-site-verification=WygY0_wlTP719dyd15s0ta3FN8znVgm5MLY1vtrTE6k
google-site-verification=Kc2lVeBh_0HENYXG_qTm8gqF-ktYvlU2pocLiDB5Q64
google-site-verification=jgqAD5l_BDMi0RRXvUG4RsRjzDxnCgvzgeqO8o6CohI
SPF v=spf1 -all
google-site-verification=0jWM-uVh5PTQ-GWURZ943NPZ3C3Rtwkwi-LaTvzEEu0
CAALookup not available with standard resolver
Resolved in 44 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), 608 ms total
PASS
1 redirect(s), 608 ms total
Info::
Single redirect
Got: https://rb.gy → https://free-url-shortener.rb.gy/ (302)
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://rb.gy
Info::
Redirect overhead: 608 ms total
Got: 608 ms
Info::
Cross-domain redirect detected

https://rb.gy

486 ms · HTTP/1.1

302

https://free-url-shortener.rb.gy/

121 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://rb.gy302486 msHTTP/1.1cloudflare
2https://free-url-shortener.rb.gy/403121 msHTTP/1.1CloudFront

See the visual redirect chain in the HTTP Probe tab →

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

A+
IPv6 Readiness
IPv6 reachable (16 ms)
PASS
IPv6 reachable (16 ms)
Info::
IPv6 is configured and reachable at 2606:4700:20::681a:229, 2606:4700:20::ac43:4604, 2606:4700:20::681a:329
Got: 16 ms connect
IPv6 Ready
AAAA Records 2606:4700:20::681a:229, 2606:4700:20::ac43:4604, 2606:4700:20::681a:329 Connection Reachable (16 ms)
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

302https://www.rb.gy/
200https://rb.gy/

Preferred variant: non-www

HTTP → HTTPS

301http://rb.gy/ https://rb.gy/

Consistent

A+
Domain Intelligence
rb.gy — via 1API GmbH, 6 years, 8 months old
PASS
rb.gy — via 1API GmbH, 6 years, 8 months old
Info::
Domain registered until Sep 17, 2026 (4 months remaining)
Info::
DNSSEC is enabled
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.
Domain expiry

62 days

September 17, 2026

SSL certificate

64 days

Issued by Let's Encrypt

Domain age

6 years, 8 months

Registered September 17, 2019

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:20::681a:329

Registrar

1API GmbH

Unlocked 2 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 1API GmbH
Created September 17, 2019 (6 years, 8 months ago)
Expires September 17, 2026 (4 months)
Last Updated November 25, 2025
Name Servers kolton.ns.cloudflare.com, courtney.ns.cloudflare.com
DNSSEC Enabled
Registrant Rebrandly Rebrandly
Hosting
IP Address 2606:4700:20::681a:329
Data source: rdap (0.4s)

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

Connection waterfall

DNS Lookup 44 ms TCP Connect 17 ms TLS Handshake 20 ms Server Processing 473 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9eff88082d38f82e-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9eff88082d38f82e-CDG
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback