IPDebrief

121.137.165.72

IP Intelligence Dossier
Your IP: 216.73.217.75

121.137.165.72 is an IPv4 address operated by KIXS-AS-KR Korea Telecom, KR (AS4766), with approximate network location Pyeongtaek-si, South Korea. It belongs to a mobile network. As of November 14, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

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🌍 Geolocation

Country🇰🇷 South Korea
Location scopeApproximate network location. Distributed and anycast services can vary by observation point.
Anycast classificationUnverified (not proof of unicast)
RegionGyeonggi-do
CityPyeongtaek-si
TimezoneAsia/Seoul
Latitude37.08
Longitude127.05

🏢 Ownership & Registration

Registered holderUnknown
ASNAS4766
Network NameKORNET-KR
CIDR Block121.128.0.0/11
RIRAPNIC
Network registration countryKR
Routing operatorKIXS-AS-KR Korea Telecom, KR
Abuse ContactAvailable via RDAP

🌐 DNS Intelligence

PTR RecordNo PTR
Forward ConfirmedNo — PTR hostname does not resolve back to this IP (weak signal)

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.

caaNot applicable
spfNot checked
dmarcNot checked
dnssecUnknown / lookup inconclusive
72.165.137.121.in-addr.arpa
fcrDnsNot applicable

☁️ Network Classification

InfrastructureMobile
Service PurposeFirewalled / No Services
Network TierUnknown — Insufficient routing data to classify
Mobile

🔌 Services & Open Ports

PortServiceProtocolBanner
No open ports detected
Closed Ports22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned)
Server—
HTTP Title—

🔐 TLS Certificate

PortLatest capture attempt
443Certificate not captured; current certificate unknown (unreachable)
8443Certificate not captured; current certificate unknown (unreachable)
🔒
No certificate captured; current certificate unknown
Issued by —
N/A
SANsNone
Valid From—
Valid Until—

🛡️ Public Network Snapshot

Origin ASNAS4766
Network Prefix121.136.0.0/13
Route mappingFound

📅 Observation Timeline 🔄 Live

First Seen2026-10-29 11:29:29 UTC
Last Seen2026-11-14 05:44:46 UTC
Profile Built2026-11-14 05:56:40 UTC
Data FreshnessLive
Signal Types13
Total Observations19
🔍 13 signal types · 19 observations collected
This report is generated from 13+ 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.
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❓ Frequently Asked Questions About 121.137.165.72

Where is 121.137.165.72 located?

Geolocation data places 121.137.165.72 in Pyeongtaek-si, Gyeonggi-do, South Korea. The local time zone is Asia/Seoul. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.

Is 121.137.165.72 malicious or safe?

121.137.165.72 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.

Is 121.137.165.72 a VPN, proxy, or data center address?

121.137.165.72 is classified as a mobile network based on network ownership and behavioural analysis.

🏘️ Related IP Addresses

Browse related networks

All addresses in AS4766🇰🇷 South KoreaNetwork directory

ℹ️ About This Report

All data shown is publicly available network metadata — IP addresses do not reliably identify individuals. Assessments are probabilistic and should not be used as sole basis for access control decisions. To report an issue or request data review, contact admin@ipdebrief.com.