137.25.25.235
137.25.25.235 is an IPv4 address operated by CHARTER-20115 - Charter Communications LLC, US (AS20115), with approximate network location Pasadena, United States. It belongs to a residential connection with reverse DNS name syn-137-025-025-235.res.spectrum.com. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Charter Communications LLC |
| ASN | AS20115 |
| Network Name | CC04 |
| CIDR Block | 137.25.0.0/16 |
| RIR | ARIN |
| Network registration country | United States |
| Routing operator | CHARTER-20115 - Charter Communications LLC, US |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | syn-137-025-025-235.res.spectrum.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | syn-137-025-025-235.res.spectrum.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 syn-137-025-025-235.res.spectrum.com |
| dmarc | Unknown / lookup inconclusive _dmarc.syn-137-025-025-235.res.spectrum.com |
| dnssec | Unknown / lookup inconclusive 235.25.25.137.in-addr.arpa |
| fcrDns | Unknown / lookup inconclusive syn-137-025-025-235.res.spectrum.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 | |||
| 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 | AS20115 |
| Network Prefix | 137.25.0.0/16 |
| Route mapping | Found |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-04 15:16:27 UTC |
| Last Seen | 2026-11-09 19:34:24 UTC |
| Profile Built | 2026-11-13 06:38:30 UTC |
| Data Freshness | Live |
| Signal Types | 15 |
| Total Observations | 23 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 137.25.25.235
Who owns the IP address 137.25.25.235?
137.25.25.235 is registered to Charter Communications LLC. The address falls within the 137.25.0.0/16 network block. Registration is held at ARIN.
Where is 137.25.25.235 located?
Geolocation data places 137.25.25.235 in Pasadena, CA, United States. The local time zone is America/Los_Angeles. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 137.25.25.235 malicious or safe?
137.25.25.235 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 137.25.25.235?
The reverse DNS (PTR) record for 137.25.25.235 is syn-137-025-025-235.res.spectrum.com. This hostname is not forward-confirmed, so it should be treated as a weak signal.
Is 137.25.25.235 a VPN, proxy, or data center address?
137.25.25.235 is classified as a residential network based on network ownership and behavioural analysis.