IPv6 Addresses Detected
2600:1901::84ef:0:0:0:0
IPv4 Addresses Detected
34.120.137.41
Network Information
WHOISIPv6 Network
- Organization
- Google LLC
- Country
- US
- ASN
- AS396982 GOOGLE-CLOUD-PLATFORM - Google LLC, US
- Network
- 2600:1900::/28
IPv4 Network
- Organization
- Google LLC
- Country
- US
- ASN
- AS396982 GOOGLE-CLOUD-PLATFORM - Google LLC, US
- Network
- 34.64.0.0/10
Web Services
35%The domain has at least one IPv6 address (AAAA DNS record).
✓ 2600:1901::84ef:0:0:0:0
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 — 1062ms TTFB.
Website reachable on port 443 when connecting via IPv6.
✓ HTTPS (port 443) responds over IPv6 — 46ms 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 = Let's Encrypt, CN = E7, expires May 8 21:23:19 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 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: 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).
✓ 34.120.137.41
Website reachable on port 80 when connecting via IPv4.
✓ HTTP (port 80) responds over IPv4 — 300ms TTFB.
Website reachable on port 443 when connecting via IPv4.
✓ HTTPS (port 443) responds over IPv4 — 53ms 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 | 18.85 ms (p95: 34.64) | 9.6 ms (p95: 10.82) | -9.3 ms |
| IPv4 | 24.3 ms (p95: 30.16) | 29.86 ms (p95: 35.92) | +5.6 ms | |
| IPv6 | 33.23 ms (p95: 34.06) | 23.63 ms (p95: 28.22) | -9.6 ms | |
| Cloudflare | IPv4 | 11.55 ms (p95: 20.62) | 10.14 ms (p95: 10.85) | -1.4 ms |
| Cloudflare | IPv6 | 10.06 ms (p95: 24.52) | 21.42 ms (p95: 23.15) | +11.4 ms |
Score History
Check History
Last 19 checks
| Date | Score | Status | Triggered By |
|---|---|---|---|
|
07 Mar 2026 01:33 UTC |
95 % | Full | manual |
|
07 Mar 2026 01:15 UTC |
87 % | Partial | manual |
|
07 Mar 2026 00:20 UTC |
95 % | Full | manual |
|
06 Mar 2026 19:08 UTC |
87 % | Partial | manual |
|
06 Mar 2026 18:03 UTC |
95 % | Full | manual |
|
06 Mar 2026 18:01 UTC |
95 % | Full | manual |
|
06 Mar 2026 17:59 UTC |
87 % | Partial | manual |
|
06 Mar 2026 17:59 UTC |
87 % | Partial | manual |
|
06 Mar 2026 17:49 UTC |
87 % | Partial | manual |
|
06 Mar 2026 17:26 UTC |
87 % | Partial | manual |
|
06 Mar 2026 17:22 UTC |
87 % | Partial | manual |
|
06 Mar 2026 17:11 UTC |
95 % | Full | manual |
|
06 Mar 2026 17:01 UTC |
90 % | Full | manual |
|
06 Mar 2026 16:59 UTC |
90 % | Full | manual |
|
06 Mar 2026 16:48 UTC |
86 % | Partial | manual |
|
06 Mar 2026 16:36 UTC |
0 % | None | manual |
|
06 Mar 2026 16:34 UTC |
86 % | Partial | manual |
|
06 Mar 2026 11:33 UTC |
78 % | Partial | manual |
|
04 Mar 2026 03:18 UTC |
78 % | Partial | manual |