## IP Intelligence Briefing: 31.151.129.228/32
Executive Summary: IP address 31.151.129.228 was classified as Low Risk with a risk score of 0. The address belongs to VODAFONEZIGGO IP AUTHORITY (ASN 33915) and is part of the ZIGGO-B2C network block (31.151.128.0/18). Geolocation data places the IP in Eindhoven, North Brabant, Netherlands. No threat indicators, blacklist entries, or malicious activity were detected during analysis.
Ownership and Network Classification:
The IP address is registered to VODAFONEZIGGO IP AUTHORITY under the ZIGGO-B2C network. RIR registration shows the address belongs to the RIPE registry. Network infrastructure classification identifies the IP as a Mobile Carrier with infrastructure type labeled MobileCarrier. The IP is not classified as cloud, CDN, VPN, proxy, Tor exit, or hosting infrastructure. PTR hostname resolves to 31-151-129-228.dynamic.upc.nl, confirming mobile carrier routing patterns.
Threat Assessment:
Threat analysis returned zero indicators of compromise. No blacklist entries were found (blacklist count: 0). The IP is not flagged as a Tor exit node, known attacker, or spam source. Abuse confidence score and pulsedive risk metrics were unavailable or null. No known campaigns were associated with the address. DNSBL listing count showed 0 entries out of 8 total DNSBL lists checked.
Observation History:
Seventeen observation records were retrieved. Recent signals from 27 July 2026 confirmed consistent geolocation data pointing to Eindhoven, Netherlands, with confidence scores ranging from 0.40 to 0.85 across different signal sources. Mobile carrier classification was confirmed with 0.40 confidence. Threat persistence days recorded as 0, and threat observation count remained at 0 throughout the observation period. No persistent malicious activity was detected.
Relationship Analysis:
Four relationships were identified. Two DNS associations linked the IP to hostname 31-151-129-228.dynamic.upc.nl. Two network relationships associated the IP with ZIGGO-B2C network. No certificate matches or correlated IPs were found in the relationship graph.
Neighborhood Analysis:
Analysis of the /24 subnet (31.151.129.0/24) returned no neighboring IP addresses. Abuse density for the subnet was 0. Risk distribution across all levels (high, medium, low) showed zero entries. No threat siblings were identified within the neighborhood.
Recommended Actions:
No specific firewall rules or security recommendations were generated. The IP's risk score of 0 and absence of threat indicators indicate standard network behavior for a mobile carrier IP. No blocking or rate-limiting actions are required based on current risk profile.
Traffic Flow Analysis:
Traceroute analysis showed 15 hops with transit networks including Comcast. First hop RTT measured 0.4ms, last hop RTT 132.7ms. Two hops timed out during the probe. Route stability analysis indicated the IP is not route-stable. Origin ASN 33915 announced BGP prefix 31.151.128.0/17.
Conclusion:
IP 31.151.129.228 represents standard mobile carrier traffic from VODAFONEZIGGO infrastructure in the Netherlands. No adversarial indicators were detected. The IP should be treated as benign traffic from a legitimate mobile network operator. No defensive actions or blocking recommendations are warranted at this time.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | VODAFONEZIGGO IP AUTHORITY |
| ASN | AS33915 |
| Network Name | ZIGGO-B2C |
| CIDR Block | 31.151.128.0/18 |
| RIR | RIPE |
| Country | NL |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 31-151-129-228.dynamic.upc.nl |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 31-151-129-228.dynamic.upc.nl |
🔐 DNS Hygiene
| Hygiene Score | 100% (Excellent) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Present |
| Domains Checked | 2 domains |
☁️ 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 | AS33915 |
| Network Prefix | 31.151.128.0/17 |
| Route mapping | Found |
🎯 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 | 0% | 0 | 0 |
| Overall | 16% | 4 | 5 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-12 08:51:48 UTC |
| Last Seen | 2026-07-27 01:04:50 UTC |
| Profile Built | 2026-08-30 14:58:41 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 25 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 31.151.129.228
Who owns the IP address 31.151.129.228?
31.151.129.228 is registered to VODAFONEZIGGO IP AUTHORITY. The address falls within the 31.151.128.0/18 network block. Registration is held at RIPE.
Where is 31.151.129.228 located?
Geolocation data places 31.151.129.228 in Eindhoven, North Brabant, Netherlands. The local time zone is Europe/Amsterdam. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 31.151.129.228 malicious or safe?
31.151.129.228 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 31.151.129.228?
The reverse DNS (PTR) record for 31.151.129.228 is 31-151-129-228.dynamic.upc.nl. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 31.151.129.228 a VPN, proxy, or data center address?
31.151.129.228 is classified as a mobile network based on network ownership and behavioural analysis.