IPv6 Addresses Detected
2600:9000:2149:b800:10:b75f:a280:93a1
2600:9000:2149:6800:10:b75f:a280:93a1
2600:9000:2149:d400:10:b75f:a280:93a1
2600:9000:2149:c600:10:b75f:a280:93a1
2600:9000:2149:6a00:10:b75f:a280:93a1
2600:9000:2149:f800:10:b75f:a280:93a1
2600:9000:2149:f600:10:b75f:a280:93a1
2600:9000:2149:a200:10:b75f:a280:93a1
IPv4 Addresses Detected
199.60.103.5
199.60.103.105
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
- HubSpot, Inc.
- Country
- US
- ASN
- AS209242 CLOUDFLARESPECTRUM - Cloudflare London, LLC, US
- Network
- 199.60.103.0/24
Web Services
35%The domain has at least one IPv6 address (AAAA DNS record).
✓ 2600:9000:2149:b800:10:b75f:a280:93a1, 2600:9000:2149:6800:10:b75f:a280:93a1, 2600:9000:2149:d400:10:b75f:a280:93a1, 2600:9000:2149:c600:10:b75f:a280:93a1, 2600:9000:2149:6a00:10:b75f:a280:93a1, 2600:9000:2149:f800:10:b75f:a280:93a1, 2600:9000:2149:f600:10:b75f:a280:93a1, 2600:9000:2149:a200:10:b75f:a280:93a1
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 — 16ms TTFB.
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 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).
✗ No nameserver has an AAAA record.
Authoritative nameserver accepts TCP connections on port 53 over IPv6.
✗ No nameserver is reachable over IPv6.
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.
✓ 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: 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).
✓ 199.60.103.5, 199.60.103.105
Website reachable on port 80 when connecting via IPv4.
✓ HTTP (port 80) responds over IPv4 — 7ms TTFB.
Website reachable on port 443 when connecting via IPv4.
✗ HTTPS is not accessible over IPv4.
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 | 8.93 ms (p95: 20.34) | 21.04 ms (p95: 21.55) | +12.1 ms |
| IPv4 | 53.04 ms (p95: 92.43) | 59.08 ms (p95: 59.13) | +6 ms | |
| IPv6 | 38.86 ms (p95: 58.15) | 50.96 ms (p95: 54.87) | +12.1 ms | |
| Cloudflare | IPv4 | 20.92 ms (p95: 25.96) | 10.21 ms (p95: 20.02) | -10.7 ms |
| Cloudflare | IPv6 | 1058.65 ms (p95: 1905.89) | 587.35 ms (p95: 1247.56) | -471.3 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.
ba5ecb59-32f4-4f39-8842-6cbd6331e7d8
Score History
Check History
Last 1 checks
| Date | Score | Status | Triggered By |
|---|---|---|---|
|
04 Jul 2026 03:41 UTC |
44 % | None | manual |