104.18.39.21
Intelligence analysis identified IP 104.18.39.21/32 as an endpoint associated with Cloudflare, Inc. (ASN 13335) infrastructure. The node operated as a content delivery network with active services on TCP ports 80, 443, 8080, and 8443, confirmed by a "cloudflare" server banner. Geolocation data placed the address in the United States. The system maintained a low-risk reputation score of 30 but appeared on one DNS blacklist entry. Neighborhood analysis indicated an abuse density of 0.25 with one threat sibling. Threat actor classification labeled the host as "Suspicious Host" with moderate risk severity. Defensive guidance recommended implementing rate-limiting controls.
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 | 0% (None) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Web Server |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 37% | 2 | 8 |
| routing | 49% | 3 | 24 |
| services | 37% | 2 | 6 |
| ownership | 35% | 3 | 5 |
| reputation | 32% | 1 | 5 |
| geolocation | 33% | 2 | 4 |
| Overall | 37% | 13 | 52 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (65%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-04 14:44:56 UTC |
| Last Seen | 2026-09-27 06:53:25 UTC |
| Profile Built | 2026-09-27 07:28:36 UTC |
| Data Freshness | Live |
| Signal Types | 26 |
| Total Observations | 66 |
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