51.148.135.85
🏢 Ownership & Registration
| Organization | Zen Internet Ltd |
| ASN | AS13037 |
| Network Name | UK-ZEN |
| CIDR Block | 51.148.0.0/16 |
| RIR | ARIN |
| Country | GB |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 51-148-135-85.dsl.in-addr.zen.co.uk |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 51-148-135-85.dsl.in-addr.zen.co.uk |
🔐 DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | 0/2 domains |
| DMARC | 0/2 domains |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
| Domains Checked | 2 domains |
☁️ 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 | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS13037 |
| Network Prefix | 51.148.0.0/16 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 21% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 17% | 2 | 3 |
| reputation | 8% | 1 | 2 |
| geolocation | 17% | 2 | 3 |
| Overall | 14% | 10 | 15 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-13 15:25:07 UTC |
| Last Seen | 2026-09-02 16:21:31 UTC |
| Profile Built | 2026-09-02 16:26:50 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 29 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 51.148.135.85
Who owns the IP address 51.148.135.85?
51.148.135.85 is registered to Zen Internet Ltd. The address falls within the 51.148.0.0/16 network block. Registration is held at ARIN.
Where is 51.148.135.85 located?
Geolocation data places 51.148.135.85 in Kensington, England, United Kingdom. The local time zone is Europe/London. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 51.148.135.85 malicious or safe?
51.148.135.85 currently carries a moderate risk assessment, meaning some indicators warrant caution, but the evidence is mixed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 51.148.135.85?
The reverse DNS (PTR) record for 51.148.135.85 is 51-148-135-85.dsl.in-addr.zen.co.uk. This hostname is not forward-confirmed, so it should be treated as a weak signal.