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https://overbid.eu

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
88
GRADE
B
FIX
3
REVIEW
5
PASS
9
INFO
0
Probed from Singapore, Singapore
200 OK
Checks
17
9 PASS 5 REVIEW 3 FIX
D
Multi-Resolver DNS Speed
Action
Mean 397ms across 3 resolvers (spread 455ms)
FIX
Mean 397ms across 3 resolvers (spread 455ms)
Info::
Cloudflare: 155ms
Got: 155ms via 1.1.1.1:53
Info::
Quad9: 428ms
Got: 428ms via 9.9.9.9:53
Info::
Google: 610ms
Got: 610ms via 8.8.8.8:53
Info::
High latency spread between resolvers: 455ms (min 155ms / max 610ms)
Wide gap between the fastest and slowest public resolver suggests a geographic anycast issue or an authoritative-server cache problem. Users in different regions will see materially different DNS times.
F
HTTP Probe Timing
Action
Total 4068 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
FIX
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
310 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
1.32 s
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
1.51 s
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
3.77 s
Total Time Total request time from DNS lookup through full response.
4.07 s

Connection waterfall

DNS Lookup 310 ms TCP Connect 1.32 s TLS Handshake 1.51 s Server Processing 630 ms Content Transfer 297 ms
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 (document or assets)

Consider using a CDN to improve global delivery speed and reduce origin load.

B
Reverse DNS
0/1 IPs match cert SAN
REVIEW
0/1 IPs match cert SAN
Info::
PTR for 15.235.80.115 does not match any cert SAN: mail.cyborg.ovh
Common when behind a CDN or shared hosting (PTR points at the provider's hostname). Mismatch can also affect mail deliverability if this IP sends email -- many MTAs reject mail when forward+reverse DNS disagree.
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

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

Certificate validity

89
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
B
CDN Cache Observability
No CDN cache-status headers in the response
REVIEW
No CDN cache-status headers in the response
Info::
No CDN cache-status headers in the response
Without an X-Cache / CF-Cache-Status / X-Vercel-Cache / Age header, you can't tell from outside whether a request hit the cache or went to origin. Operationally important: enables debugging stale-content reports and verifying cache rules. Most managed CDN platforms emit at least one of these by default; absence often means the platform's diagnostic headers are stripped at an upstream proxy.
B
Operational Status Page
No status page link detected
REVIEW
No status page link detected
Info::
No operational status page link detected
Status pages communicate planned maintenance and incidents to users -- a hallmark of operationally-mature services. Most SaaS teams publish one via Atlassian Statuspage, Instatus, BetterUptime, or a self-hosted Cachet. Smaller sites legitimately don't need one; flagged as Info, not a failure.
A
DNS Records
1 A records, 333 ms lookup
PASS
1 A records, 333 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 15.235.80.115
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: ns106.ovh.net, dns106.ovh.net
Info::
1 mail exchanger(s) configured
Info::
SPF record present in TXT
Warning::
DNS resolution is slow (333 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 333 ms
A15.235.80.115
AAAA—
CNAME—
NSns106.ovh.net, dns106.ovh.net
MX
10 mail.cyborg.ovh
TXT
SPF v=spf1 mx -all
google-site-verification=ccv4T9ZC6fDyUPMpiag07xY5QGVxzRIbBqQAZuta1Gw
CAALookup not available with standard resolver
Resolved in 333 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

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+
Subdomain Takeover
No subdomain takeover risk detected
PASS
No subdomain takeover risk detected
Info::
No CNAME record present
A+
DNSSEC
Signed and validating
PASS
Signed and validating
Info::
DNSSEC fully signed and chain validates (RSASHA256)
A+
CAA Records
issue: letsencrypt.org | iodef configured
PASS
issue: letsencrypt.org | iodef configured
Info::
CAA issue tag present — authorized CA(s): letsencrypt.org
Info::
CAA iodef tag present (failed-issuance notifications enabled)
A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://overbid.eu

https://overbid.eu

3470 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://overbid.eu2003470 msHTTP/1.1
A+
Crawlability
robots.txt present, sitemap with 2 URLs
PASS
robots.txt present, sitemap with 2 URLs
Info::
robots.txt is present
Got: 2058 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 2 entries
Info::
Sitemap index with 2 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2058 B Sitemaps referenced 1 User-agents meta-externalagent, *, Claude-SearchBot, Amazonbot, GPTBot, ChatGPT-User, ClaudeBot, CCBot, DuckAssistBot, Claude-User, Perplexity-User, OAI-SearchBot, PerplexityBot, Google-Extended, Applebot-Extended Blocking No — crawling allowed
User-agent: *
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: GPTBot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: OAI-SearchBot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: ChatGPT-User
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: ClaudeBot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: Claude-User
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: Claude-SearchBot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: PerplexityBot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: Perplexity-User
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: Google-Extended
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: Applebot-Extended
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: CCBot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: meta-externalagent
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: DuckAssistBot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

User-agent: Amazonbot
Disallow: /done
Disallow: /notify/
Disallow: /api/
Allow: /api/listings.json
Disallow: /*?q=
Disallow: /*&q=

Sitemap: https://overbid.eu/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 2 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 redirects to HTTPS permanently
Got: HTTP 308

www / non-www

301https://www.overbid.eu/
200https://overbid.eu/

Preferred variant: non-www

HTTP → HTTPS

308http://overbid.eu/ → https://overbid.eu/

Consistent

A+
Domain Intelligence
overbid.eu — via OVH SAS, hosted on OVH
PASS
overbid.eu — via OVH SAS, hosted on OVH
Info::
Registrar: OVH SAS
Info::
Hosting: OVH
Got: AS16276
Domain expiry

Unknown

SSL certificate

89 days

Issued by Let's Encrypt

Domain age

Unknown

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

OVH

ASN AS16276

15.235.80.115

Registrar

OVH SAS

Lock status unknown 2 NS records
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Registrar OVH SAS
Name Servers dns106.ovh.net, ns106.ovh.net
Registrant NOT DISCLOSED!
Hosting
IP Address 15.235.80.115
ASN AS16276 (OVH - OVH SAS, FR)
Provider OVH
Data source: whois (2.4s)
A+
Health Check Endpoint
Health endpoint at https://overbid.eu/healthz (HTTP 200)
PASS
Health endpoint at https://overbid.eu/healthz (HTTP 200)
Info::
Public health endpoint at https://overbid.eu/healthz
Got: https://overbid.eu/healthz
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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