138.75.213.181 is an IPv4 address announced by AS4773, with approximate network location Singapore, Singapore. Its reverse DNS name is 181.213.75.138.unknown.m1.com.sg. As of November 11, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | M1 LIMITED administrator |
| ASN | AS4773 |
| Network Name | M1LIMITED-SG |
| CIDR Block | 138.75.128.0/17 |
| RIR | ARIN |
| Network registration country | SG |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 181.213.75.138.unknown.m1.com.sg |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 181.213.75.138.unknown.m1.com.sg |
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.
| spf | Not checked |
| dmarc | Not checked |
| fcrDns | Not checked |
| dnssec | Not checked |
| caa | Not checked |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
No specific classification
🔍 16 signal types · 16 observations collected
This report is generated from 16+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
❓ Frequently Asked Questions About 138.75.213.181
Who owns the IP address 138.75.213.181?
138.75.213.181 is registered to M1 LIMITED administrator. The address falls within the 138.75.128.0/17 network block. Registration is held at ARIN.
Where is 138.75.213.181 located?
Geolocation data places 138.75.213.181 in Singapore. The local time zone is Asia/Singapore. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 138.75.213.181 malicious or safe?
138.75.213.181 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 138.75.213.181?
The reverse DNS (PTR) record for 138.75.213.181 is 181.213.75.138.unknown.m1.com.sg. This hostname is not forward-confirmed, so it should be treated as a weak signal.
