IPv6 Addresses Detected
2600:9000:215c:e800:2:b8f0:1d00:93a1
2600:9000:215c:de00:2:b8f0:1d00:93a1
2600:9000:215c:9e00:2:b8f0:1d00:93a1
2600:9000:215c:6c00:2:b8f0:1d00:93a1
2600:9000:215c:3e00:2:b8f0:1d00:93a1
2600:9000:215c:a200:2:b8f0:1d00:93a1
2600:9000:215c:6200:2:b8f0:1d00:93a1
2600:9000:215c:ce00:2:b8f0:1d00:93a1
IPv4 Addresses Detected
3.165.75.62
3.165.75.10
3.165.75.59
3.165.75.79
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).
✓ 2600:9000:215c:e800:2:b8f0:1d00:93a1, 2600:9000:215c:de00:2:b8f0:1d00:93a1, 2600:9000:215c:9e00:2:b8f0:1d00:93a1, 2600:9000:215c:6c00:2:b8f0:1d00:93a1, 2600:9000:215c:3e00:2:b8f0:1d00:93a1, 2600:9000:215c:a200:2:b8f0:1d00:93a1, 2600:9000:215c:6200:2:b8f0:1d00:93a1, 2600:9000:215c:ce00:2:b8f0:1d00:93a1
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 — 196ms TTFB.
Website reachable on port 443 when connecting via IPv6.
✓ HTTPS (port 443) responds over IPv6 — 155ms TTFB.
Website responds when connected exclusively over IPv6, with no IPv4 fallback. Simulates what happens when IPv4 is turned off.
✓ Site is fully reachable via 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 = "DigiCert, Inc.", CN = DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1, expires May 19 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.
✗ Nameserver does not answer queries 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.
✗ No MX record found in DNS.
The highest-priority MX server resolves to an IPv6 address (AAAA record).
✗ MX server has no IPv6 address.
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.
✗ No SPF record found.
A DKIM public key is published at a common selector, enabling email signature verification.
No common DKIM selector found.
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).
✓ 3.165.75.62, 3.165.75.10, 3.165.75.59, 3.165.75.79
Website reachable on port 80 when connecting via IPv4.
✓ HTTP (port 80) responds over IPv4 — 160ms TTFB.
Website reachable on port 443 when connecting via IPv4.
✓ HTTPS (port 443) responds over IPv4 — 134ms 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 | 7.83 ms (p95: 17.95) | 9.02 ms (p95: 17.02) | +1.2 ms |
| IPv4 | 29.64 ms (p95: 31.31) | 32.58 ms (p95: 35.74) | +2.9 ms | |
| IPv6 | 37.69 ms (p95: 61.47) | 38.38 ms (p95: 65.27) | +0.7 ms | |
| Cloudflare | IPv4 | 20.32 ms (p95: 20.85) | 11.43 ms (p95: 18.02) | -8.9 ms |
| Cloudflare | IPv6 | 17.98 ms (p95: 26.19) | 12.22 ms (p95: 31.93) | -5.8 ms |
Score History
Check History
Last 2 checks
| Date | Score | Status | Triggered By |
|---|---|---|---|
|
07 Mar 2026 01:16 UTC |
64 % | Partial | manual |
|
06 Mar 2026 19:10 UTC |
64 % | Partial | manual |