51.9.165.170
51.9.165.170 is an IPv4 address announced by AS6871, with approximate network location Royal Tunbridge Wells, United Kingdom. Its reverse DNS name is 170.165.9.51.dyn.plus.net. As of November 8, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | BTNET-INFRA-MNT |
| ASN | AS6871 |
| Network Name | FORCE9 |
| CIDR Block | 51.9.0.0/16 |
| RIR | ARIN |
| Network registration country | GB |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 170.165.9.51.dyn.plus.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 170.165.9.51.dyn.plus.net |
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.
| spf | Not checked |
| dmarc | Not checked |
| fcrDns | Not checked |
| dnssec | Not checked |
| caa | Not checked |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS6871 |
| Network Prefix | 51.9.0.0/16 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 28% | 2 | 2 |
| routing | 20% | 1 | 1 |
| services | 20% | 1 | 1 |
| ownership | 20% | 1 | 1 |
| reputation | 20% | 1 | 1 |
| geolocation | 35% | 2 | 2 |
| Overall | 23% | 8 | 8 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-11-06 20:30:06 UTC |
| Last Seen | 2026-11-08 12:18:32 UTC |
| Profile Built | 2026-11-08 12:44:46 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 18 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 51.9.165.170
Who owns the IP address 51.9.165.170?
51.9.165.170 is registered to BTNET-INFRA-MNT. The address falls within the 51.9.0.0/16 network block. Registration is held at ARIN.
Where is 51.9.165.170 located?
Geolocation data places 51.9.165.170 in Royal Tunbridge Wells, England, United Kingdom. The local time zone is Europe/London. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 51.9.165.170 malicious or safe?
51.9.165.170 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 51.9.165.170?
The reverse DNS (PTR) record for 51.9.165.170 is 170.165.9.51.dyn.plus.net. This hostname is forward-confirmed, meaning it resolves back to the same address.