9.9.9.9
IP Intelligence Dossier
Your IP: 216.73.216.123
⭐ Quad9 DNS (Primary)
Quad9's threat-blocking public DNS resolver operated by the Quad9 Foundation — operated by Quad9 Foundation.
🤖 Witness AIThis summary was generated by AI and may contain inaccuracies. Verify critical details independently.
Quad9 (9.9.9.9) is a free recursive DNS resolver operated by the Quad9 Foundation (AS19281). Known for built-in threat blocking via curated threat intelligence feeds. Clean reputation, no abuse indicators.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Quad9 |
| ASN | AS19281 |
| Network Name | — |
| CIDR Block | 9.9.9.0/24 |
| RIR | ARIN |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | dns9.quad9.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | dns9.quad9.net |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 443 | https | tcp | — |
| 8443 | https-alt | tcp | — |
| Closed Ports | 22, 25, 80, 3389, 8080 (2 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
CN=dns.quad9.net, O=Quad9, L=Zurich, S=Zurich, C=CH
Issued by CN=DigiCert Global G3 TLS ECC SHA384 2020 CA1, O=DigiCert Inc, C=US
Self-signed: No
| SANs | dns.quad9.netdns-nosec.quad9.netdoh-brave.quad9.netdns.resolver.quad9.netalpha-dns.quad9.netbeta-dns.quad9.netdns9.quad9.netdns10.quad9.netdns11.quad9.netdns12.quad9.net |
| Valid From | 2025-07-01T00:00:00+00:00 |
| Valid Until | 2026-07-27T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha384ECDSA |
| Validity Period | 391 days |
| Serial Number | 0B79DE75DD5A2A92519A1F5A317D3943 |
| Thumbprint | D4FD294F5E3F389C469BF154CC51FC00D4153B98 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 20% | 2 | 4 |
| routing | 24% | 4 | 5 |
| services | 20% | 2 | 3 |
| ownership | 24% | 3 | 4 |
| reputation | 19% | 1 | 3 |
| geolocation | 20% | 2 | 3 |
| Overall | 21% | 14 | 22 |
Coverage: 6/6 dimensions · Data sufficiency: sufficient
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ Claimed geolocation contradicts RTT physics measurement
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-09 21:40:26 UTC |
| Last Seen | 2026-06-25 20:24:12 UTC |
| Profile Built | 2026-06-25 20:29:45 UTC |
| Data Freshness | Live |
| Signal Types | 35 |
| Total Observations | 36 |
🔍 35 signal types · 36 observations collected
This report is generated from 35+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
Full dossier details are available via our API.
ℹ️ About This Report
All data shown is publicly available network metadata — IP addresses do not reliably identify individuals.
Assessments are probabilistic and should not be used as sole basis for access control decisions.
To report an issue or request data review, contact admin@ipdebrief.com.