IPv4 Addresses Detected
104.17.80.116
104.17.79.116
Network Information
WHOISIPv4 Network
- Organization
- Cloudflare, Inc.
- Country
- US
- ASN
- AS13335 CLOUDFLARENET - Cloudflare, Inc., US
- Network
- 104.16.0.0/12
Web Services
35%The domain has at least one IPv6 address (AAAA DNS record).
✗ No AAAA record found in DNS.
The IPv6 addresses are publicly routable — not link-local, ULA, loopback or documentation ranges.
✗ IPv6 address is not globally routable.
Website reachable on port 80 when connecting via IPv6.
✗ HTTP is not accessible over IPv6.
Website reachable on port 443 when connecting via IPv6.
✗ HTTPS is not accessible over IPv6.
Website responds when connected exclusively over IPv6, with no IPv4 fallback. Simulates what happens when IPv4 is turned off.
✗ Site is not reachable when limited to IPv6-only.
The SSL/TLS certificate is valid, not expired, and matches the domain when connected via IPv6.
✗ TLS certificate is invalid, expired, or hostname mismatch over IPv6.
The domain has both A and AAAA records for backwards compatibility during the IPv6 transition.
✗ Domain is IPv6-only or IPv4-only.
Server advertises HTTP/3 support via the Alt-Svc: h3 header.
✗ No HTTP/3 support detected.
DNS & DNSSEC
25%At least one authoritative nameserver has an IPv6 address (AAAA record).
✓ Nameserver has IPv6 address.
Authoritative nameserver accepts TCP connections on port 53 over IPv6.
✓ Nameserver is reachable via IPv6 on port 53.
Nameserver actually resolves DNS queries when asked over IPv6 — not just TCP open, but functionally answering.
✓ DNS queries answered over IPv6.
Full DNSSEC chain-of-trust validation passes. Prevents DNS cache poisoning and spoofing.
✓ DNSSEC fully validated.
A PTR record exists in ip6.arpa for the IPv6 address. Important for email delivery and network diagnostics.
✗ No PTR record found.
Delegation Signer record exists in the parent zone.
✓ DS record found at parent zone.
RRSIG signatures are present and not expired.
✓ RRSIG signatures are current and valid.
The cryptographic algorithm used for DNSSEC signing.
ECDSAP256SHA256
Email Services
25%The domain has at least one MX (Mail Exchange) DNS record pointing to a mail server.
✓ MX record found.
The highest-priority MX server resolves to an IPv6 address (AAAA record).
✓ MX server has AAAA record.
The MX server accepts SMTP connections (port 25) over IPv6 and responds with a 220 banner.
✓ SMTP port 25 responds over IPv6.
The MX server supports STARTTLS encryption when connected over IPv6.
✓ STARTTLS supported over IPv6.
A TXT record with v=spf1 exists, declaring which servers may send email for this domain.
✓ SPF record found.
A DKIM public key is published at a common selector, enabling email signature verification.
DKIM selector found: default._domainkey
A DMARC policy record exists at _dmarc.<domain>, enabling email authentication reporting.
✓ DMARC record found.
IPv4 Baseline
15%The domain has at least one IPv4 address (A DNS record).
✓ 104.17.80.116, 104.17.79.116
Website reachable on port 80 when connecting via IPv4.
✓ HTTP (port 80) responds over IPv4 — 118ms TTFB.
Website reachable on port 443 when connecting via IPv4.
✓ HTTPS (port 443) responds over IPv4 — 126ms TTFB.
Render-Path Dependencies
not weightedAn AAAA record on this domain says nothing about the stylesheets, scripts and fonts the page then loads from somewhere else. Those are scored here, separately, because a blended figure would flatter both numbers. This score does not affect the 60% above.
The dependency chain could not be walked because this check predates dependency scoring. This is recorded as unmeasured rather than counted against the domain.
DNS Resolution Performance
Comparison of A (IPv4) vs AAAA (IPv6) query times across resolvers and transports. Shows median (p50) of 3 samples.
| Resolver | Transport | A (IPv4) | AAAA (IPv6) | Delta |
|---|---|---|---|---|
| System | Default | 17.33 ms (p95: 19.64) | 22.22 ms (p95: 23.44) | +4.9 ms |
| IPv4 | 93.82 ms (p95: 95.31) | 86.15 ms (p95: 89.56) | -7.7 ms | |
| IPv6 | 89.34 ms (p95: 104.92) | 87.44 ms (p95: 101.67) | -1.9 ms | |
| Cloudflare | IPv4 | 16.04 ms (p95: 21.81) | 23.12 ms (p95: 25.72) | +7.1 ms |
| Cloudflare | IPv6 | 27.89 ms (p95: 29.98) | 13.15 ms (p95: 25.7) | -14.7 ms |
This result is backed by an HMAC-SHA256 signed evidence record. Scan the code or follow the link to verify the audit trail independently.
836c0927-cbf8-4881-b059-eed086c4be0d
Score History
Check History
Last 4 checks
| Date | Score | Status | Triggered By |
|---|---|---|---|
|
08 Aug 2026 18:28 UTC |
60 % | Partial | manual |
|
08 Aug 2026 10:59 UTC |
60 % | Partial | manual |
|
01 Aug 2026 02:55 UTC |
52 % | None | scheduled |
|
04 Jul 2026 03:42 UTC |
52 % | None | manual |