IPv6 Addresses Detected
2620:cb:2000::1
IPv4 Addresses Detected
198.202.211.1
Network Information
WHOISIPv6 Network
- Organization
- Webflow, Inc
- Country
- US
- ASN
- AS13335 CLOUDFLARENET - Cloudflare, Inc., US
- Network
- 2620:CB:2000::/48
IPv4 Network
- Organization
- Webflow, Inc
- Country
- US
- ASN
- AS209242 CLOUDFLARESPECTRUM - Cloudflare London, LLC, US
- Network
- 198.202.211.0/24
Web Services
35%The domain has at least one IPv6 address (AAAA DNS record).
✓ 2620:cb:2000::1
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 — 341ms 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 = Google Trust Services, CN = WE1, expires Sep 11 14:29:21 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 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: 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).
✓ 198.202.211.1
Website reachable on port 80 when connecting via IPv4.
✓ HTTP (port 80) responds over IPv4 — 411ms TTFB.
Website reachable on port 443 when connecting via IPv4.
✓ HTTPS (port 443) responds over IPv4 — 337ms 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 | 23.8 ms (p95: 25.96) | 17.85 ms (p95: 32.73) | -6 ms |
| IPv4 | 29.68 ms (p95: 68.67) | 51.29 ms (p95: 64.44) | +21.6 ms | |
| IPv6 | 36.77 ms (p95: 40.73) | 35.14 ms (p95: 46.61) | -1.6 ms | |
| Cloudflare | IPv4 | 20.14 ms (p95: 31.11) | 23.57 ms (p95: 30.54) | +3.4 ms |
| Cloudflare | IPv6 | 37.92 ms (p95: 47.15) | 19.52 ms (p95: 36.89) | -18.4 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.
8b41c57c-8ef9-4700-939a-d116731da0e4
Score History
Check History
Last 8 checks
| Date | Score | Status | Triggered By |
|---|---|---|---|
|
04 Jul 2026 03:20 UTC |
90 % | Full | scheduled |
|
13 Jun 2026 01:02 UTC |
82 % | Partial | scheduled |
|
07 Mar 2026 01:13 UTC |
82 % | Partial | manual |
|
06 Mar 2026 19:07 UTC |
82 % | Partial | manual |
|
06 Mar 2026 17:48 UTC |
82 % | Partial | manual |
|
06 Mar 2026 17:21 UTC |
82 % | Partial | manual |
|
06 Mar 2026 03:32 UTC |
82 % | Partial | manual |
|
04 Mar 2026 03:16 UTC |
82 % | Partial | manual |