104.28.201.73
IP Intelligence Briefing: 104.28.201.73
Date: 2026-06-07
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**1. Core Profile**
- Reputation: Moderate Risk (Risk Score: 40)
- Ownership:
- ASN: AS13335 (Cloudflare, Inc.)
- Network: CLOUDFLARENET (ARIN-registered)
- Geolocation:
- Country: US (California)
- Coordinates: Approximate (37.751, -97.822)
- Network Role:
- CDN: Yes (Cloudflare infrastructure)
- Hosting: No
- Mobile/Residential: No
- Threat Indicators:
- No known malicious campaigns, spam, or attacker activity.
- DNSSEC: Valid
- DNSBL Listings: 2/8 (low risk)
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**2. Observation History**
- Recent Activity (Last 30 Days):
- High Confidence Signal (0.95):
- Detected as "has_threats": true with 50+ pulses (unknown sources).
- Possible false positive or benign scan.
- Operator Risk Score: 0.13 (Minimal risk).
- Threat Persistence: No persistent malicious behavior.
- Geolocation Consensus: Plausible (US-based).
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**3. Relationships**
- Network Links:
- Directly tied to CloudflareNET (CLOUDFLARENET).
- No links to known malicious organizations, domains, or certificates.
- Services:
- No open ports or TLS certificates detected.
- No HTTP server banners or email authentication records.
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**4. Neighborhood Analysis**
- Subnet: 104.28.201.0/24
- Neighbor Risk:
- Abuse Density: 0% (clean subnet).
- Active Siblings: 0 (isolated IP).
- Subnet Classification: Clean.
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**5. Recommendations**
- Monitoring:
- Track the high-confidence threat signal (0.95) for false positives.
- Monitor Cloudflare infrastructure for unusual traffic patterns.
- Mitigation:
- No immediate blocking required.
- Consider whitelisting Cloudflare IPs for CDN traffic.
- Further Analysis:
- Investigate the 50+ pulses from unknown sources.
- Validate DNSBL listings for potential false positives.
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Conclusion: 104.28.201.73 is a legitimate Cloudflare CDN IP with no active malicious indicators. The high-confidence threat signal warrants further investigation but does not justify blocking. Maintain standard monitoring for CDN-related anomalies.
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 | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| 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 | 27% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 19% | 2 | 2 |
| ownership | 27% | 2 | 3 |
| reputation | 13% | 1 | 2 |
| geolocation | 19% | 2 | 2 |
| Overall | 20% | 10 | 13 |
| Data Coherence | Mostly Consistent (85%) — 1 contradiction(s) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Fresh
| First Seen | 2026-05-14 07:12:44 UTC |
| Last Seen | 2026-06-14 17:35:54 UTC |
| Profile Built | 2026-06-13 15:25:52 UTC |
| Data Freshness | Fresh |
| Signal Types | 18 |
| Total Observations | 19 |
Full dossier details are available via our API.