173.212.206.20
IP Intelligence Dossier
Your IP: 216.73.216.123
🏢 Ownership & Registration
| Organization | Johannes Selg |
| ASN | AS51167 |
| Network Name | CONTABO |
| CIDR Block | 173.212.192.0/19 |
| RIR | ARIN |
| Country | DE |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 4sinz.de |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 4sinz.de |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Web Server |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | lighttpd/1.4.69 |
| HTTP Title | — |
🔐 TLS Certificate
An expired certificate for
CN=4sinz.de was found on this IP. This may indicate a previously hosted website, a decommissioned service, or stale infrastructure.CN=4sinz.de
Issued by CN=E5, O=Let's Encrypt, C=US
Self-signed: No
| SANs | 4sinz.de |
| Valid From | 2024-08-14T14:28:33+00:00 |
| Valid Until | 2024-11-12T14:28:32+00:00 (expired) |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha384ECDSA |
| Validity Period | 89 days |
| Serial Number | 0307CA02B48AAC837438EAEF5D110B2980A1 |
| Thumbprint | 0EFE03C612BF0F1D03B59839F036861F7CCA5322 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 3 |
| routing | 17% | 1 | 1 |
| services | 38% | 2 | 4 |
| ownership | 35% | 2 | 3 |
| reputation | 17% | 1 | 2 |
| geolocation | 24% | 2 | 2 |
| Overall | 28% | 10 | 15 |
Coverage: 6/6 dimensions · Data sufficiency: sufficient
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-06-10 14:50:32 UTC |
| Last Seen | 2026-06-21 17:34:09 UTC |
| Profile Built | 2026-06-21 17:43:33 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 24 |
🔍 21 signal types · 24 observations collected
This report is generated from 21+ 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.