151.101.193.140
Intelligence assessment identified 151.101.193.140/32 as a web server host operated by Fastly, Inc. (ASN 54113) within the SKYCA-3 CIDR block. The endpoint provided services over TCP ports 80 and 443, utilizing a Varnish server banner and an HTTP/2.0 protocol stack. A TLS certificate confirmed association with Reddit, Inc., though the overall reputation remained Low Risk with a score of 25.
Analysis highlighted a discrepancy between claimed geolocation and RTT physics measurements, resulting in a Very Low confidence rating for the profile. The subnet neighborhood showed mixed classification with an abuse density of 0.2308 and three active threat siblings. One DNSBL listing was recorded against eight total lists. Despite zero observed honeypot hits or WAF violations, the asset was categorized as a Suspicious Host.
The recommendation was to Monitor the IP at Low Severity due to present signal contradictions.
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 | 3/3 domains |
| DMARC | 3/3 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 3 domains |
☁️ 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 | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | Varnish |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.reddit.comreddit.com |
| Valid From | 2026-08-21T00:00:00+00:00 |
| Valid Until | 2027-02-16T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 179 days |
| Serial Number | 0E42DA2F61876E2C9BD32E0EDF70B925 |
| Thumbprint | 38FD2B3CC8F2B3C9FE8412A47370C37970C0D2A7 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 33% | 2 | 7 |
| routing | 38% | 4 | 5 |
| services | 37% | 2 | 6 |
| ownership | 30% | 3 | 4 |
| reputation | 22% | 1 | 4 |
| geolocation | 33% | 2 | 5 |
| Overall | 32% | 14 | 31 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (65%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-04 14:49:22 UTC |
| Last Seen | 2026-09-28 17:12:07 UTC |
| Profile Built | 2026-09-28 17:21:54 UTC |
| Data Freshness | Live |
| Signal Types | 29 |
| Total Observations | 54 |
Full dossier details are available via our API.