151.101.194.137
Intelligence reports indicate that 151.101.194.137 was observed operating as an infrastructure asset owned by Fastly, Inc. (ASN 54113) within the 151.101.0.0/16 CIDR block. The system functioned as a Content Delivery Network (CDN) providing web server services on ports 80 and 443, utilizing a Varnish server banner. Risk assessment classified the reputation as Low Risk with a risk score of 25. However, data sufficiency was limited by signal contradictions, including a discrepancy between claimed geolocation and RTT physics measurements. One DNSBL listing was recorded, but no active threat indicators or known campaigns were identified. The subnet neighborhood was classified as mostly clean with an abuse density of 0.0769. Due to the presence of signal contradictions and low confidence levels, the recommended action was to monitor the address with low severity.
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 | 40% (Fair) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 2 domains |
☁️ 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 | k.sni-649-default.ssl.fastly.net |
| Valid From | 2026-09-04T05:16:08+00:00 |
| Valid Until | 2027-03-22T04:16:08+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 198 days |
| Serial Number | 017310342225895DD75C4E681961A442 |
| Thumbprint | C631E99B177F78D52335DA6E11036BE6F656C1C3 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 33% | 2 | 7 |
| routing | 27% | 2 | 3 |
| services | 37% | 2 | 6 |
| ownership | 30% | 3 | 4 |
| reputation | 22% | 1 | 4 |
| geolocation | 33% | 2 | 6 |
| Overall | 30% | 12 | 30 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-03 03:51:17 UTC |
| Last Seen | 2026-09-26 13:58:38 UTC |
| Profile Built | 2026-09-26 14:08:18 UTC |
| Data Freshness | Live |
| Signal Types | 27 |
| Total Observations | 52 |
Full dossier details are available via our API.