IPv6 Addresses Detected
2600:9000:2721:8e00:f:1353:fac0:93a1
2600:9000:2721:5c00:f:1353:fac0:93a1
2600:9000:2721:9000:f:1353:fac0:93a1
2600:9000:2721:3000:f:1353:fac0:93a1
2600:9000:2721:2000:f:1353:fac0:93a1
2600:9000:2721:e200:f:1353:fac0:93a1
2600:9000:2721:6e00:f:1353:fac0:93a1
2600:9000:2721:ea00:f:1353:fac0:93a1
IPv4 Addresses Detected
3.165.102.32
3.165.102.109
3.165.102.105
3.165.102.42
Network Information
WHOISIPv6 Network
- Organization
- Amazon.com, Inc.
- Country
- US
- ASN
- AS16509 AMAZON-02 - Amazon.com, Inc., US
- Network
- 2600:9000::/28
IPv4 Network
- Organization
- Amazon.com, Inc.
- Country
- US
- ASN
- AS16509 AMAZON-02 - Amazon.com, Inc., US
- Network
- 3.165.0.0/16
Web Services
35%The domain has at least one IPv6 address (AAAA DNS record).
✓ 2600:9000:2721:8e00:f:1353:fac0:93a1, 2600:9000:2721:5c00:f:1353:fac0:93a1, 2600:9000:2721:9000:f:1353:fac0:93a1, 2600:9000:2721:3000:f:1353:fac0:93a1, 2600:9000:2721:2000:f:1353:fac0:93a1, 2600:9000:2721:e200:f:1353:fac0:93a1, 2600:9000:2721:6e00:f:1353:fac0:93a1, 2600:9000:2721:ea00:f:1353:fac0:93a1
The IPv6 addresses are publicly routable — not link-local, ULA, loopback or documentation ranges.
✓ All addresses are globally routable.
Website reachable on port 80 when connecting via IPv6.
✓ HTTP (port 80) responds over IPv6.
Website reachable on port 443 when connecting via IPv6.
✓ HTTPS (port 443) responds over IPv6 — 26ms TTFB.
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.
✓ Certificate valid — issued by C = US, O = Amazon, CN = Amazon RSA 2048 M01, expires Nov 5 23:59:59 2026 GMT
The domain has both A and AAAA records for backwards compatibility during the IPv6 transition.
✓ Domain has both A and AAAA records.
Server advertises HTTP/3 support via the Alt-Svc: h3 header.
✓ Alt-Svc: h3 header 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 validation failed or zone is unsigned.
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.
✗ No DS record at parent.
RRSIG signatures are present and not expired.
✗ No valid RRSIG found.
The cryptographic algorithm used for DNSSEC signing.
No DNSKEY record found.
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 is not reachable over IPv6.
The MX server supports STARTTLS encryption when connected over IPv6.
✗ STARTTLS not available 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: google._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).
✓ 3.165.102.32, 3.165.102.109, 3.165.102.105, 3.165.102.42
Website reachable on port 80 when connecting via IPv4.
✓ HTTP (port 80) responds over IPv4 — 47ms TTFB.
Website reachable on port 443 when connecting via IPv4.
✓ HTTPS (port 443) responds over IPv4 — 27ms TTFB.
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 | 22.98 ms (p95: 23.03) | 9 ms (p95: 11.48) | -14 ms |
| IPv4 | 33.01 ms (p95: 60.75) | 19.5 ms (p95: 22.36) | -13.5 ms | |
| IPv6 | 36.6 ms (p95: 40.16) | 21.59 ms (p95: 35.19) | -15 ms | |
| Cloudflare | IPv4 | 21.83 ms (p95: 24.01) | 10.6 ms (p95: 10.94) | -11.2 ms |
| Cloudflare | IPv6 | 20.34 ms (p95: 20.62) | 21.42 ms (p95: 22.09) | +1.1 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.
8d529c7a-892a-4840-88b9-3c6cffbd2baf
Score History
Check History
Last 1 checks
| Date | Score | Status | Triggered By |
|---|---|---|---|
|
04 Jul 2026 03:43 UTC |
77 % | Partial | manual |