121.200.5.166
🏢 Ownership & Registration
| Organization | IRT-AU-AUSSIEFIBRE |
| ASN | AS4764 |
| Network Name | WIDEBAND |
| CIDR Block | 121.200.5.0/24 |
| RIR | APNIC |
| Country | AU |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 121-200-5-166.79c805.syd.nbn.aussiebb.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 121-200-5-166.79c805.syd.nbn.aussiebb.net |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Not configured |
| DMARC | Present |
| FCrDNS | 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 | |||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS4764 |
| Network Prefix | 121.200.4.0/22 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 0% | 0 | 0 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 50% | 2 | 3 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 20% | 5 | 6 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-07 00:23:40 UTC |
| Last Seen | 2026-08-26 17:55:07 UTC |
| Profile Built | 2026-08-29 07:45:13 UTC |
| Data Freshness | Live |
| Signal Types | 17 |
| Total Observations | 19 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 121.200.5.166
Who owns the IP address 121.200.5.166?
121.200.5.166 is registered to IRT-AU-AUSSIEFIBRE. The address falls within the 121.200.5.0/24 network block. Registration is held at APNIC.
Where is 121.200.5.166 located?
Geolocation data places 121.200.5.166 in Sydney, NSW, Australia. The local time zone is Australia/Sydney. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 121.200.5.166 malicious or safe?
121.200.5.166 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 121.200.5.166?
The reverse DNS (PTR) record for 121.200.5.166 is 121-200-5-166.79c805.syd.nbn.aussiebb.net. This hostname is forward-confirmed, meaning it resolves back to the same address.