66.28.4.242
66.28.4.242 is an IPv4 address operated by Cogent Communications, LLC (AS174), geolocated to Hyattsville, United States. Its reverse DNS name is be3452.rcr21.phx02.atlas.cogentco.com. As of October 21, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Organization | Cogent Communications, LLC |
| ASN | AS174 |
| Network Name | COGENT-NB-0000 |
| CIDR Block | 66.28.0.0/16 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | be3452.rcr21.phx02.atlas.cogentco.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | be3452.rcr21.phx02.atlas.cogentco.com |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| 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 | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS174 |
| Network Prefix | 66.28.0.0/16 |
| 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 | 0% | 0 | 0 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 16% | 4 | 4 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-21 02:56:05 UTC |
| Last Seen | 2026-10-21 02:56:05 UTC |
| Profile Built | 2026-10-21 03:10:27 UTC |
| Data Freshness | Live |
| Signal Types | 17 |
| Total Observations | 17 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 66.28.4.242
Who owns the IP address 66.28.4.242?
66.28.4.242 is registered to Cogent Communications, LLC. The address falls within the 66.28.0.0/16 network block. Registration is held at ARIN.
Where is 66.28.4.242 located?
Geolocation data places 66.28.4.242 in Hyattsville, MD, United States. The local time zone is America/New_York. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 66.28.4.242 malicious or safe?
66.28.4.242 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 66.28.4.242?
The reverse DNS (PTR) record for 66.28.4.242 is be3452.rcr21.phx02.atlas.cogentco.com. This hostname is not forward-confirmed, so it should be treated as a weak signal.