151.101.193.181
Intelligence analysis indicates 151.101.193.181 operated as a web server within the Fastly, Inc. CDN infrastructure (ASN 54113). The asset resided within the 151.101.0.0/16 block and maintained a low-risk reputation score of 20. Traffic analysis revealed standard web services on ports 80 and 443, utilizing a Varnish server banner and a GlobalSign TLS certificate for p.shared-437-default.ssl.fastly.net. No direct threat indicators, blacklist entries, or known campaign associations were identified.
Validation metrics highlighted anomalies. Geolocation data placed the origin in the United States, yet Round-Trip Time measurements (16ms) contradicted the physical distance (7625.7km), resulting in a flagged implausibility violation. Neighborhood assessment of the 151.101.193.181/24 subnet showed an abuse density of 0.3077, with four threat siblings detected among twelve active neighbors. The overall profile confidence remained very low (0.2833) due to signal contradictions and insufficient intent classification data. Operational logs recorded a 421 status code response.
Security operations recommended monitoring the asset due to present signal contradictions, despite the low-risk classification. The profile data freshness confirmed live activity between 2026-09-10 and 2026-09-14.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Fastly, Inc. |
| ASN | AS54113 |
| Network Name | SKYCA-3 |
| CIDR Block | 151.101.0.0/16 |
| RIR | RIPE |
| 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 | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | Varnish |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | p.shared-437-default.ssl.fastly.net |
| Valid From | 2026-09-04T05:16:07+00:00 |
| Valid Until | 2027-03-22T04:16:07+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 198 days |
| Serial Number | 01C5225CF73F51CEFDF91600277829FA |
| Thumbprint | 6764D4C69BD51A4921645B80875F95C9C7AD020E |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 3 |
| routing | 17% | 1 | 1 |
| services | 35% | 2 | 3 |
| ownership | 35% | 2 | 3 |
| reputation | 17% | 1 | 2 |
| geolocation | 24% | 2 | 2 |
| Overall | 27% | 10 | 14 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-10 22:07:38 UTC |
| Last Seen | 2026-09-14 22:09:53 UTC |
| Profile Built | 2026-09-14 22:24:11 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 23 |
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