210.6.55.21
🏢 Ownership & Registration
| Organization | Hong Kong Broadband Network Limited |
| ASN | AS9269 |
| Network Name | HKBN |
| CIDR Block | 210.6.0.0/18 |
| RIR | APNIC |
| Country | HK |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 210006055021.ctinets.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 210006055021.ctinets.com |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Residential |
| Service Purpose | Residential Endpoint |
| Network Tier | End-User — Residential ISP endpoint |
🔌 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 | AS9269 |
| Network Prefix | 210.6.0.0/18 |
| 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 | 25% | 1 | 1 |
| Overall | 20% | 5 | 6 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-19 18:09:43 UTC |
| Last Seen | 2026-09-01 00:42:55 UTC |
| Profile Built | 2026-08-29 14:52:11 UTC |
| Data Freshness | Live |
| Signal Types | 16 |
| Total Observations | 18 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 210.6.55.21
Who owns the IP address 210.6.55.21?
210.6.55.21 is registered to Hong Kong Broadband Network Limited. The address falls within the 210.6.0.0/18 network block. Registration is held at APNIC.
Where is 210.6.55.21 located?
Geolocation data places 210.6.55.21 in Hong Kong. The local time zone is Asia/Hong_Kong. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 210.6.55.21 malicious or safe?
210.6.55.21 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 210.6.55.21?
The reverse DNS (PTR) record for 210.6.55.21 is 210006055021.ctinets.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 210.6.55.21 a VPN, proxy, or data center address?
210.6.55.21 is classified as a residential network based on network ownership and behavioural analysis.