13.35.107.72
13.35.107.72 is an IPv4 address operated by Amazon.com, Inc. (AS16509), geolocated to Philadelphia, United States. It belongs to datacenter or hosting infrastructure with reverse DNS name server-13-35-107-72.phl51.r.cloudfront.net. As of November 4, 2026, IPDebrief rates it Low Risk (20/100); no anonymizing service was detected.
Analysis identified the IP address 13.35.107.72 as Amazon.com, Inc. infrastructure (AS16509) within the AMAZO-CF network block. The host operated as a web server on the CloudFront CDN, maintaining open TCP ports 80 and 443. Threat indicators remained absent, with zero blacklist hits and no known campaign associations, resulting in a risk score of 20.
Discrepancies were observed between geolocation data and round-trip time physics, specifically a claimed distance of 7625.7 km versus an observed RTT of 26.0 ms. The asset resided in a clean subnet neighborhood with zero threat siblings. Due to signal contradictions, the asset was flagged for monitoring at a low severity level.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon.com, Inc. |
| ASN | AS16509 |
| Network Name | AMAZO-CF |
| CIDR Block | 13.35.0.0/16 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | server-13-35-107-72.phl51.r.cloudfront.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | server-13-35-107-72.phl51.r.cloudfront.net |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Present |
☁️ 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 | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS16509 |
| Network Prefix | 13.35.107.0/24 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 2 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 25% | 1 | 2 |
| reputation | 25% | 1 | 1 |
| geolocation | 25% | 1 | 1 |
| Overall | 26% | 7 | 8 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-19 13:17:57 UTC |
| Last Seen | 2026-11-04 17:54:50 UTC |
| Profile Built | 2026-11-04 18:04:35 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 30 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 13.35.107.72
Who owns the IP address 13.35.107.72?
13.35.107.72 is registered to Amazon.com, Inc.. The address falls within the 13.35.0.0/16 network block. Registration is held at ARIN.
Where is 13.35.107.72 located?
Geolocation data places 13.35.107.72 in Philadelphia, US-PA, United States. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 13.35.107.72 malicious or safe?
13.35.107.72 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 13.35.107.72?
The reverse DNS (PTR) record for 13.35.107.72 is server-13-35-107-72.phl51.r.cloudfront.net. This hostname is forward-confirmed, meaning it resolves back to the same address.
What ports are open on 13.35.107.72?
Responsive ports observed on 13.35.107.72 include 80, 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.
Is 13.35.107.72 a VPN, proxy, or data center address?
13.35.107.72 is classified as cloud infrastructure based on network ownership and behavioural analysis.