38.104.186.53
38.104.186.53 is an IPv4 address operated by COGENT-174 - Cogent Communications, LLC, US (AS174), with approximate network location Boston, United States. Its reverse DNS name is se1-1-10-0.ca01.bos01.atlas.cogentco.com. As of November 14, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Cogent Communications, LLC |
| ASN | AS174 |
| Network Name | COGENT-A |
| CIDR Block | 38.0.0.0/8 |
| RIR | ARIN |
| Network registration country | United States |
| Routing operator | COGENT-174 - Cogent Communications, LLC, US |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | se1-1-10-0.ca01.bos01.atlas.cogentco.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | se1-1-10-0.ca01.bos01.atlas.cogentco.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.
Partial coverage: 1 conclusive IP DNS checks.
| caa | Not found at queried name com |
| spf | Not found at queried name se1-1-10-0.ca01.bos01.atlas.cogentco.com |
| dmarc | Not found at queried name _dmarc.se1-1-10-0.ca01.bos01.atlas.cogentco.com |
| dnssec | Unknown / lookup inconclusive 53.186.104.38.in-addr.arpa |
| fcrDns | Not found at queried name se1-1-10-0.ca01.bos01.atlas.cogentco.com |
☁️ 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
| Port | Latest capture attempt |
|---|---|
| 443 | Certificate not captured; current certificate unknown (unreachable) |
| 8443 | Certificate not captured; current certificate unknown (unreachable) |
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS174 |
| Network Prefix | 38.0.0.0/8 |
| 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 | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-20 09:28:13 UTC |
| Last Seen | 2026-11-14 07:35:08 UTC |
| Profile Built | 2026-11-14 07:47:12 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 30 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 38.104.186.53
Who owns the IP address 38.104.186.53?
38.104.186.53 is registered to Cogent Communications, LLC. The address falls within the 38.0.0.0/8 network block. Registration is held at ARIN.
Where is 38.104.186.53 located?
Geolocation data places 38.104.186.53 in Boston, MA, United States. The local time zone is America/New_York. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 38.104.186.53 malicious or safe?
38.104.186.53 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 38.104.186.53?
The reverse DNS (PTR) record for 38.104.186.53 is se1-1-10-0.ca01.bos01.atlas.cogentco.com. This hostname is not forward-confirmed, so it should be treated as a weak signal.