IPv6 Addresses Detected
2600:9000:203f:a00:1:ca45:7c80:93a1
2600:9000:203f:5400:1:ca45:7c80:93a1
2600:9000:203f:2a00:1:ca45:7c80:93a1
2600:9000:203f:8400:1:ca45:7c80:93a1
2600:9000:203f:7600:1:ca45:7c80:93a1
2600:9000:203f:5a00:1:ca45:7c80:93a1
2600:9000:203f:ba00:1:ca45:7c80:93a1
2600:9000:203f:b600:1:ca45:7c80:93a1
IPv4 Addresses Detected
65.9.168.108
65.9.168.87
65.9.168.115
65.9.168.107
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
- 65.9.128.0/18
Web Services
35%The domain has at least one IPv6 address (AAAA DNS record).
✓ 2600:9000:203f:a00:1:ca45:7c80:93a1, 2600:9000:203f:5400:1:ca45:7c80:93a1, 2600:9000:203f:2a00:1:ca45:7c80:93a1, 2600:9000:203f:8400:1:ca45:7c80:93a1, 2600:9000:203f:7600:1:ca45:7c80:93a1, 2600:9000:203f:5a00:1:ca45:7c80:93a1, 2600:9000:203f:ba00:1:ca45:7c80:93a1, 2600:9000:203f:b600:1:ca45:7c80:93a1
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 — 46ms TTFB.
Website reachable on port 443 when connecting via IPv6.
✓ HTTPS (port 443) responds over IPv6 — 29ms 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 = GB, O = Sectigo Limited, CN = Sectigo Public Server Authentication CA OV R36, expires Apr 3 23:59:59 2027 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.
✗ 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 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: selector1._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).
✓ 65.9.168.108, 65.9.168.87, 65.9.168.115, 65.9.168.107
Website reachable on port 80 when connecting via IPv4.
✓ HTTP (port 80) responds over IPv4 — 46ms TTFB.
Website reachable on port 443 when connecting via IPv4.
✓ HTTPS (port 443) responds over IPv4 — 31ms 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 | 12.25 ms (p95: 23.09) | 10.81 ms (p95: 11.66) | -1.4 ms |
| IPv4 | 78.15 ms (p95: 92.59) | 111.25 ms (p95: 112.95) | +33.1 ms | |
| IPv6 | 35.28 ms (p95: 104.54) | 35.73 ms (p95: 75.94) | +0.4 ms | |
| Cloudflare | IPv4 | 9.95 ms (p95: 11.14) | 19.2 ms (p95: 20.15) | +9.3 ms |
| Cloudflare | IPv6 | 31.55 ms (p95: 159.18) | 8.9 ms (p95: 21.36) | -22.7 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.
110f4d81-f330-4713-b08e-08e7782540df
Score History
Check History
Last 1 checks
| Date | Score | Status | Triggered By |
|---|---|---|---|
|
04 Jul 2026 03:48 UTC |
73 % | Partial | manual |