54.151.91.217
54.151.91.217 is an IPv4 address operated by AMAZON-02 - Amazon.com, Inc., US (AS16509), with approximate network location San Jose, United States. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
Witness AI IP Assessment (AI-generated)
AI-generated assessment. Verify critical details independently.
The host address 54.151.91.217/32 is associated with Amazon.com, Inc. (AS16509) under the network name AMAZON-SFO, registered within the United States. Geolocation data indicates the server is located in San Jose, California, though this represents an approximate network location and does not confirm the physical endpoint of the specific host. The network role is classified as a web server, but specific infrastructure attributes such as cloud presence, CDN usage, or anycast deployment remain unverified or unconfirmed in the available data.
DNS hygiene checks were not executed; therefore, the status of SPF, DMARC, CAA, and DNSSEC records for the associated domains could not be determined. The absence of these checks does not indicate a failure in IP hygiene. A historical TLS probe identified a certificate issued to "CN=lms-aws-us-west-1.roblox.com" by "CN=Amazon RSA 2048 M04," but the probe status is currently unknown and the certificate data is marked as stale, indicating no live validity confirmation for this specific IP at the time of observation.
The overall risk score is zero, and no active malicious indicators were detected. However, due to the lack of current DNS hygiene data and the stale status of the certificate probe, the host should be monitored for future activity rather than immediately assumed to be benign.
🏢 Ownership & Registration
| Registered holder | Amazon.com, Inc. |
| ASN | AS16509 |
| Network Name | AMAZON-SFO |
| CIDR Block | 54.151.0.0/17 |
| RIR | ARIN |
| Network registration country | United States |
| Routing operator | AMAZON-02 - Amazon.com, Inc., US |
| 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 Posture
Results describe the queried names. SPF, DMARC and CAA are domain policies, not requirements for every IP. DNSSEC here describes reverse DNS; inconclusive validation does not mean unsigned.
Not assessed: 0 conclusive IP DNS checks.
| caa | Unknown / lookup inconclusive amazonaws.com |
| spf | Not checked |
| dmarc | Not checked |
| dnssec | Unknown / lookup inconclusive 217.91.151.54.in-addr.arpa |
| fcrDns | Not checked |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 80, 3389, 8080, 8443 (1 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| Port | Probe target | Certificate finding |
|---|---|---|
| (IP-targeted) | CN=lms-aws-us-west-1.roblox.com Historical certificate; current certificate unknown |
| SANs | lms-aws-us-west-1.roblox.com |
| Valid From | 2026-09-22T00:00:00+00:00 |
| Valid Until | 2027-04-07T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 197 days |
🛡️ Public Network Snapshot
| Origin ASN | AS16509 |
| Network Prefix | 54.151.0.0/17 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Enabled |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 1 | 1 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 25% | 1 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 20% | 5 | 6 |
| Data Coherence | Consistent (100%) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Recent
| First Seen | 2026-11-10 02:39:56 UTC |
| Last Seen | 2026-11-14 13:40:24 UTC |
| Profile Built | 2026-11-13 11:02:07 UTC |
| Data Freshness | Recent |
| Signal Types | 20 |
| Total Observations | 20 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 54.151.91.217
Who owns the IP address 54.151.91.217?
54.151.91.217 is registered to Amazon.com, Inc.. The address falls within the 54.151.0.0/17 network block. Registration is held at ARIN.
Where is 54.151.91.217 located?
Geolocation data places 54.151.91.217 in San Jose, CA, United States. The local time zone is America/Los_Angeles. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 54.151.91.217 malicious or safe?
54.151.91.217 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 ports are open on 54.151.91.217?
Responsive ports observed on 54.151.91.217 include 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.