46.135.51.75
# IP Intelligence Briefing: 46.135.51.75/32
Classification: Low Risk – Residential Mobile IP
Date: 2026-07-27
## Executive Summary
IP address 46.135.51.75 is a Vodafone Czech Republic residential mobile assignment with a low overall risk score of 25. The IP represents a customer endpoint in Prague, Czech Republic, operating on the LTE/5G network infrastructure. No malicious activity indicators, threat feeds, or blacklist entries were observed during assessment.
## Network Profile
- ASN: 16019 (OSKAR LIR / Vodafone Czech Republic a.s.)
- Network Block: VFCZ-PRG2-CUST-MOBILE-P7 (46.135.48.0/21)
- Organization: OSKAR LIR
- Geolocation: Prague, Czech Republic (CZ)
- Carrier: Vodafone (MCC: 204, MNC: 04, Technology: LTE/5G)
- Network Role: Firewalled / No Services Detected
## DNS & Infrastructure
- PTR Hostname: cst-prg-51-75.cust.vodafone.cz
- Forward Resolution: Confirmed to vodafone.cz domain
- Reverse DNS: Valid (cst-prg-51-75.cust.vodafone.cz)
- Services: No open ports, no TLS certificates, no HTTP services
- Email Reputation: SPF and DMARC records present (configuration details not populated)
## Threat Assessment
- Risk Score: 25 (Low Risk)
- Abuse Confidence Score: Not available
- Blacklist Count: 0
- Known Attacker/SpamSource/Tor Exit: No
- Campaign Correlations: None identified
- DNSBL Entries: 1 listing across 8 total lists (minor concern)
## Historical Analysis
Observation history shows consistent residential mobile classification with Prague geolocation (91% confidence). Alienvault OTX feeds registered 2 pulse signals associated with the ASN. No ownership changes or persistent malicious behavior observed. Geolocation validation returned ICMP blocked status with 605.7km distance from probe origin, but geo-data deemed plausible.
## Network Neighborhood
Subnet 46.135.51.0/24 classification: Clean
- Abuse Density: 0%
- Threat Siblings: 0
- Active Siblings: 0
No neighboring IPs flagged for abuse.
## Relationships
All 10 relationship entries map to consistent DNS associations (cst-prg-51-75.cust.vodafone.cz) and network ownership (VFCZ-PRG2-CUST-MOBILE-P7). No external entity correlations detected.
## Recommended Actions
No specific firewall rules or blocking actions recommended. The IP presents as a legitimate residential mobile endpoint with no observed malicious indicators. SOC analysts may monitor for any behavioral changes if this IP appears in incident logs.
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Prepared by: IPDebrief Intelligence Platform
Confidentiality: Internal Use Only
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | OSKAR LIR |
| ASN | AS16019 |
| Network Name | VFCZ-PRG2-CUST-MOBILE-P7 |
| CIDR Block | 46.135.48.0/21 |
| RIR | RIPE |
| Country | CZ |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | cst-prg-51-75.cust.vodafone.cz |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | cst-prg-51-75.cust.vodafone.cz |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Mobile |
| Service Purpose | Firewalled / No Services |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | AS16019 |
| Network Prefix | 46.135.0.0/16 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 30% | 2 | 5 |
| routing | 8% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 17% | 2 | 3 |
| reputation | 20% | 1 | 3 |
| geolocation | 17% | 2 | 3 |
| Overall | 17% | 10 | 17 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-14 09:43:36 UTC |
| Last Seen | 2026-09-05 00:00:41 UTC |
| Profile Built | 2026-09-05 00:12:08 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 31 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 46.135.51.75
Who owns the IP address 46.135.51.75?
46.135.51.75 is registered to OSKAR LIR. The address falls within the 46.135.48.0/21 network block. Registration is held at RIPE.
Where is 46.135.51.75 located?
Geolocation data places 46.135.51.75 in Prague, PR, Czechia. The local time zone is Europe/Prague. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 46.135.51.75 malicious or safe?
46.135.51.75 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 46.135.51.75?
The reverse DNS (PTR) record for 46.135.51.75 is cst-prg-51-75.cust.vodafone.cz. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 46.135.51.75 a VPN, proxy, or data center address?
46.135.51.75 is classified as a mobile network based on network ownership and behavioural analysis.