148.255.40.157
# IP Intelligence Briefing: 148.255.40.157
## Executive Summary
IP address 148.255.40.157 presents a Low Risk profile (Risk Score: 25) with no active threat indicators. The address is allocated to Compañía Dominicana de Teléfonos S. A., a Caribbean telecommunications provider. No immediate defensive action required; monitoring recommended due to minor DNSBL listing.
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## Ownership and Network Classification
- ASN: 6400 (Compañía Dominicana de Teléfonos S. A.)
- Netblock: 148.255.0.0/16
- RIR: ARIN
- Infrastructure Type: Telecom provider infrastructure
- Service Status: Firewalled / No services detected
The IP belongs to a major Dominican Republic telecommunications operator. The /16 block is a substantial allocation, typical of ISP infrastructure.
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## Geolocation Assessment
- Reported Location: United States (Newark, NJ) / Dominican Republic (Santo Domingo)
- Assessment: Geolocation consensus unavailable; multiple conflicting geo sources detected
- Implication: Location data should be treated as unreliable for geofencing decisions
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## Threat Profile
- Abuse Confidence: Not applicable (no active abuse signals)
- Blacklist Status: 0/8 DNSBL listings (1 historical listing detected)
- Tor Exit Node: No
- Known Attacker: No
- Spam Source: No
- Active Threats: None detected
- Campaign Correlation: No associated campaigns
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## Technical Indicators
- Open Ports: None
- DNS PTR: 157.40.255.148.d.dyn.claro.net.do
- Forward Resolution: Dynamic DNS hostname (indicates ISP residential/ISP-managed allocation)
- Email Reputation: No email authentication (SPF/DMARC) configured
- DNSSEC: Valid
The dynamic DNS hostname pattern suggests this is an ISP-managed address, likely allocated to residential or business customers rather than hosting infrastructure.
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## Neighborhood Analysis
- Subnet: 148.255.40.0/24
- Abuse Density: 0 (Clean)
- Threat Siblings: 0
- Classification: Clean
- Assessment: No malicious activity detected in adjacent addresses
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## Observation History
- Total Observations: 15
- Recent Activity: Signals observed on 2026-07-28
- Threat Persistence: No persistent malicious behavior detected
- Temporal Trend: Stable with no escalation
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## SOC Recommendations
1. Monitoring: Continue passive monitoring; no immediate blocking required
2. Geofencing: Do not use for geofencing due to conflicting location data
3. Block Threshold: Only consider blocking if specific threat indicators emerge
4. Historical Context: Minor DNSBL listing noted; verify current status if incidents occur
5. Related Infrastructure: No high-risk neighbors identified in /24 subnet
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Classification: Low Risk | Confidence: High | Last Updated: 2026-07-28
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Compañía Dominicana de Teléfonos S. A. |
| ASN | AS6400 |
| Network Name | 148.255.0.0 - 148.255.255.255 |
| CIDR Block | 148.255.0.0/16 |
| RIR | ARIN |
| Country | DO |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 157.40.255.148.d.dyn.claro.net.do |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 157.40.255.148.d.dyn.claro.net.do |
🔐 DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ 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 | AS6400 |
| Network Prefix | 148.255.0.0/16 |
| 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 | 23% | 2 | 4 |
| reputation | 20% | 1 | 3 |
| geolocation | 12% | 2 | 2 |
| Overall | 17% | 10 | 17 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-19 05:58:20 UTC |
| Last Seen | 2026-09-04 21:33:41 UTC |
| Profile Built | 2026-09-04 21:34:26 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 29 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 148.255.40.157
Who owns the IP address 148.255.40.157?
148.255.40.157 is registered to Compañía Dominicana de Teléfonos S. A.. The address falls within the 148.255.0.0/16 network block. Registration is held at ARIN.
Where is 148.255.40.157 located?
Geolocation data places 148.255.40.157 in Newark, US-NJ, United States. The local time zone is America/New_York. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 148.255.40.157 malicious or safe?
148.255.40.157 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 148.255.40.157?
The reverse DNS (PTR) record for 148.255.40.157 is 157.40.255.148.d.dyn.claro.net.do. This hostname is not forward-confirmed, so it should be treated as a weak signal.