129.121.84.70
IP Intelligence Dossier
Your IP: 216.73.216.123
🤖 Witness AIThis summary was generated by AI and may contain inaccuracies. Verify critical details independently.
IP Intelligence Briefing: 129.121.84.70
Date: 2026-06-02
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**1. Risk Profile**
- Risk Score: 40 (Moderate Risk)
- Network Classification: Clean subnet (abuse density: 0)
- Ownership: Registered to Oso Grande IP Services, LLC (AS31898, ARIN) in Ashburn, Virginia, US.
- Threat Indicators: No known malware, spam, or attacker associations.
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**2. Geolocation & Network**
- Location: Ashburn, VA, US (geolocation inferred via DNS and RTT analysis).
- Subnet: 129.121.84.0/24.
- Neighbors: 1 active sibling IP (129.121.84.193) with low risk.
- Geo Validation: RTT anomaly detected (26ms vs. expected 126ms for 6318km).
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**3. Network Services**
- Open Ports: HTTP (80) and HTTPS (443).
- Web Server: Nginx with TLS certificate for server-714636.signoffsemi.com.
- DNS: PTR record points to server.signoffsemi.com.
- Email Security: SPF and DMARC records configured for signoffsemi.com.
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**4. Threat Observations**
- History: 21 observations over 30 days, showing stable network behavior.
- Geo Plausibility: Invalid (RTT mismatch suggests potential spoofing or misconfigured routing).
- DNS Security: DNSSEC valid, no CAA records detected.
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**5. Relationships**
- Network: Linked to OGTIPS1-121-129 subnet (same provider).
- Domains: Associated with signoffsemi.com (DNS and TLS).
- Operators: Minimal risk score (0.13) based on DNS and BGP analysis.
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**6. Recommendations**
- Monitor: Investigate the geo validation discrepancy (RTT anomaly) for potential spoofing.
- Verify: Confirm DNSSEC and CAA configurations for signoffsemi.com.
- Baseline: Track the IP’s behavior for any deviations in network or DNS activity.
- Firewall: Consider allowing traffic to 129.121.84.70 with HTTPS (443) if it’s a legitimate service.
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Summary: This IP is a low-risk, legitimate web server in the US with no direct threat indicators. However, the geo validation anomaly warrants further investigation to rule out misconfiguration or spoofing.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Oso Grande IP Services, LLC |
| ASN | AS31898 |
| Network Name | — |
| CIDR Block | — |
| RIR | ARIN |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | server.signoffsemi.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | server.signoffsemi.com |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | nginx |
| HTTP Title | — |
🔐 TLS Certificate
A self-signed certificate was detected. This is common for development servers, internal services, or IoT devices.
CN=server-714636.signoffsemi.com, E=ssl@server-714636.signoffsemi.com
Issued by CN=server-714636.signoffsemi.com, E=ssl@server-714636.signoffsemi.com
Self-signed: Yes
| SANs | server-714636.signoffsemi.com |
| Valid From | 2026-04-02T17:29:34+00:00 |
| Valid Until | 2027-04-02T17:29:34+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 365 days |
| Serial Number | 547918C9 |
| Thumbprint | A458F85FAF43E2C57C18E7EDE28BE02D848C47A7 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 28% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 26% | 2 | 3 |
| ownership | 26% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 30% | 2 | 3 |
| Overall | 24% | 10 | 17 |
Coverage: 6/6 dimensions · Data sufficiency: sufficient
| Data Coherence | Mixed Signals (65%) — 2 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ Claimed geolocation contradicts RTT physics measurement
⚠ High authority score (70) but appears on threat lists (risk 40)
⚠ High authority score (70) but appears on threat lists (risk 40)
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:03:39 UTC |
| Last Seen | 2026-06-22 13:23:40 UTC |
| Profile Built | 2026-06-22 13:37:54 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 23 |
🔍 22 signal types · 23 observations collected
This report is generated from 22+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
Full dossier details are available via our API.
ℹ️ About This Report
All data shown is publicly available network metadata — IP addresses do not reliably identify individuals.
Assessments are probabilistic and should not be used as sole basis for access control decisions.
To report an issue or request data review, contact admin@ipdebrief.com.