151.101.1.171
151.101.1.171 is an IPv4 address operated by FASTLY - Fastly, Inc., US (AS54113), with approximate network location Montreal, United States. It belongs to datacenter or hosting infrastructure. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
Witness AI IP Assessment (AI-generated)
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Intelligence Briefing: 151.101.1.171/32
The target host, 151.101.1.171, was validated by the server and identified as part of the SKYCA-3 network block (151.101.0.0/16), owned by Fastly, Inc. (AS54113) in the United States. While ownership records list the registrant country as the United States, geolocation data associated with this observation point indicates an approximate network location in Montreal, Quebec. The infrastructure is classified as a Content Delivery Network (CDN) service provider, with a service purpose of Web Server.
DNS hygiene assessments for SPF, DMARC, and CAA records returned as not checked, while DNSSEC status for the reverse lookup zone was unknown. The risk score assigned to the host is 0. Historical TLS probe data indicates a stale certificate issued by GlobalSign nv-sa to the subject CN=f.shared-427-default.ssl.fastly.net, valid from September 4, 2026, to March 22, 2027; this finding describes a historical probe artifact rather than current endpoint validity. Anycast status remains unverified. Given the limited scope of tool observations and the lack of specific security posture indicators, continued monitoring or corroboration is recommended.
🏢 Ownership & Registration
| Registered holder | Fastly, Inc. |
| ASN | AS54113 |
| Network Name | SKYCA-3 |
| CIDR Block | 151.101.0.0/16 |
| RIR | RIPE |
| Network registration country | United States |
| Routing operator | FASTLY - Fastly, 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 | Not checked |
| spf | Not checked |
| dmarc | Not checked |
| dnssec | Unknown / lookup inconclusive 171.1.101.151.in-addr.arpa |
| fcrDns | Not checked |
☁️ 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
| Port | Probe target | Certificate finding |
|---|---|---|
| (IP-targeted) | CN=f.shared-427-default.ssl.fastly.net Historical certificate; current certificate unknown |
| SANs | f.shared-427-default.ssl.fastly.net |
| Valid From | 2026-09-04T05:16:07+00:00 |
| Valid Until | 2027-03-22T04:16:07+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 198 days |
🛡️ Public Network Snapshot
| Origin ASN | AS54113 |
| Network Prefix | 151.101.0.0/22 |
| Route mapping | Found |
| Certificates in transparency logs | 0 certificates |
| 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 | 35% | 2 | 2 |
| ownership | 25% | 1 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 22% | 6 | 7 |
| Data Coherence | Consistent (100%) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Recent
| First Seen | 2026-11-09 02:11:15 UTC |
| Last Seen | 2026-11-14 13:38:41 UTC |
| Profile Built | 2026-11-13 09:06:23 UTC |
| Data Freshness | Recent |
| Signal Types | 22 |
| Total Observations | 22 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 151.101.1.171
Who owns the IP address 151.101.1.171?
151.101.1.171 is registered to Fastly, Inc.. The address falls within the 151.101.0.0/16 network block. Registration is held at RIPE.
Where is 151.101.1.171 located?
Geolocation data places 151.101.1.171 in Montreal, Quebec, United States. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 151.101.1.171 malicious or safe?
151.101.1.171 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 151.101.1.171?
Responsive ports observed on 151.101.1.171 include 80, 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.
Is 151.101.1.171 a VPN, proxy, or data center address?
151.101.1.171 is classified as a content delivery network based on network ownership and behavioural analysis.