151.101.128.223
The IP address 151.101.128.223/32 resided within Fastly, Inc. infrastructure (ASN 54113) and functioned as a Content Delivery Network (CDN) web server. Network scans identified open ports 80 and 443, with a server banner reporting Varnish cache software and HTTP/2.0 support. The associated TLS certificate validated the domain www.python.org.
Reputation analysis classified the endpoint as Low Risk with a score of 20. No blacklists, Tor exit nodes, or known attacker indicators were detected. Behavioral analysis recorded zero incidents, honeypot hits, or WAF violations. DNS hygiene maintained SPF and DMARC records.
However, geolocation validation presented a contradiction. The system attributed the address to New York, US, but RTT measurements indicated a distance of 7625km with a latency of 15ms, violating the physical minimum of 152.5ms for that distance. Control plane data showed valid RPKI state.
The operational recommendation remained Monitor. The contradiction between claimed geolocation and RTT physics required observation for potential changes, though the current severity was low.
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 | Present |
| DMARC | Present |
| 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 | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | Varnish |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | www.python.org*.python.orgpython.org |
| Valid From | 2026-01-13T13:03:46+00:00 |
| Valid Until | 2027-02-14T13:03:45+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 396 days |
| Serial Number | 01FC68FD084537B393B8D6C708974969 |
| Thumbprint | C35B712BBADA2CA5EE53781C792B54324D1E41DB |
🎯 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 | 27% | 2 | 3 |
| ownership | 27% | 2 | 3 |
| reputation | 13% | 1 | 2 |
| geolocation | 19% | 2 | 2 |
| Overall | 21% | 10 | 14 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-08 15:22:00 UTC |
| Last Seen | 2026-09-17 13:05:36 UTC |
| Profile Built | 2026-09-17 13:18:40 UTC |
| Data Freshness | Live |
| Signal Types | 26 |
| Total Observations | 33 |
Full dossier details are available via our API.