51.187.66.75
51.187.66.75 is an IPv4 address operated by BSKYB-BROADBAND-AS - Sky UK Limited, GB (AS5607), with approximate network location Dublin, Ireland. It belongs to a residential connection with reverse DNS name 33bb424b.skybroadband.com. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Sky UK Broadband Hostmaster |
| ASN | AS5607 |
| Network Name | SKY-BROADBAND |
| CIDR Block | 51.186.0.0/15 |
| RIR | ARIN |
| Network registration country | IE |
| Routing operator | BSKYB-BROADBAND-AS - Sky UK Limited, GB |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 33bb424b.skybroadband.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 33bb424b.skybroadband.com |
DNS Posture
Results describe the queried names. SPF, DMARC and CAA are domain policies, not requirements for every IP. DNSSEC here describes reverse DNS; inconclusive validation does not mean unsigned.
Not assessed: 0 conclusive IP DNS checks.
| caa | Not found at queried name com |
| spf | Unknown / lookup inconclusive 33bb424b.skybroadband.com |
| dmarc | Unknown / lookup inconclusive _dmarc.33bb424b.skybroadband.com |
| dnssec | Unknown / lookup inconclusive 75.66.187.51.in-addr.arpa |
| fcrDns | Unknown / lookup inconclusive 33bb424b.skybroadband.com |
☁️ 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 | AS5607 |
| Network Prefix | 51.187.64.0/18 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 20% | 1 | 1 |
| routing | 20% | 1 | 1 |
| services | 0% | 0 | 0 |
| ownership | 40% | 2 | 3 |
| reputation | 0% | 0 | 0 |
| geolocation | 20% | 1 | 1 |
| Overall | 16% | 5 | 6 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-11-06 00:39:04 UTC |
| Last Seen | 2026-11-07 21:01:29 UTC |
| Profile Built | 2026-11-13 08:54:26 UTC |
| Data Freshness | Live |
| Signal Types | 17 |
| Total Observations | 20 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 51.187.66.75
Who owns the IP address 51.187.66.75?
51.187.66.75 is registered to Sky UK Broadband Hostmaster. The address falls within the 51.186.0.0/15 network block. Registration is held at ARIN.
Where is 51.187.66.75 located?
Geolocation data places 51.187.66.75 in Dublin, Leinster, Ireland. The local time zone is Europe/Dublin. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 51.187.66.75 malicious or safe?
51.187.66.75 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 51.187.66.75?
The reverse DNS (PTR) record for 51.187.66.75 is 33bb424b.skybroadband.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 51.187.66.75 a VPN, proxy, or data center address?
51.187.66.75 is classified as a residential network based on network ownership and behavioural analysis.