104.19.230.21
Intelligence Briefing: 104.19.230.21
Overview
The IP address 104.19.230.21 was observed within the Cloudflare, Inc. network (ASN 13335, CLOUDFLARENET). The infrastructure type is identified as a Content Delivery Network (CDN) and Web Server. The location is attributed to the United States with geo-consensus validation.
Technical Profile
The host presented open ports 80/TCP, 443/TCP, 8080/TCP, and 8443/TCP. TLS certificate analysis indicated a subject name of hcaptcha.com, issued by Google Trust Services. The server banner confirmed a Cloudflare signature, and the HTTP response status was recorded as 403 Forbidden.
Threat Assessment
The IP received a Low Risk reputation classification with a risk score of 30. Control plane data showed one DNS blacklist listing out of eight total lists checked. Although no specific known campaigns were correlated, the host was classified as a "Suspicious Host." No threat indicators or honeypot hits were recorded in the behavioral history.
Recommendations
Security operations should consider rate limiting to mitigate medium-severity risks. The following firewall rule formats were suggested based on the risk profile:
- iptables: Limit 5 requests per minute.
- nginx: limit_req zone=ipdebrief burst=5.
- pf: pass in on egress max-pkt-rate 5/1.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Cloudflare, Inc. |
| ASN | AS13335 |
| Network Name | CLOUDFLARENET |
| CIDR Block | 104.16.0.0/12 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Web Server |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| 8080 | http-alt | tcp | — |
| 8443 | https-alt | tcp | — |
| Closed Ports | 22, 25, 3389 (4 open / 7 scanned) | ||
| Server | cloudflare |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | hcaptcha.com*.hcaptcha.com |
| Valid From | 2026-08-16T23:28:23+00:00 |
| Valid Until | 2026-11-15T00:28:20+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256ECDSA |
| Validity Period | 90 days |
| Serial Number | 468BFA212A4166D813F926E229AF9AFC |
| Thumbprint | 36C615F5210B24210E720085DDC6598A81399C5F |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 33% | 2 | 4 |
| ownership | 27% | 2 | 3 |
| reputation | 13% | 1 | 2 |
| geolocation | 27% | 2 | 2 |
| Overall | 23% | 10 | 15 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-09 02:51:52 UTC |
| Last Seen | 2026-09-16 06:37:38 UTC |
| Profile Built | 2026-09-16 06:46:06 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 25 |
Full dossier details are available via our API.