Is IP address 153.121.64.203 dangerous?

153.121.64.203 presents moderate risk with a threat level of 5/10. While not critically dangerous, it has been associated with activity. Monitoring and conditional blocking is recommended.

Who owns or operates IP address 153.121.64.203?

IP address 153.121.64.203 is operated by SAKURA Internet Inc. (ASN 9370) and is geolocated to JP. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 153.121.64.203?

Blocking 153.121.64.203 is advisable for security-sensitive environments. With a threat level of 5/10, consider implementing conditional blocks or rate limiting.

How accurate is this threat assessment for 153.121.64.203?

Our threat assessment for 153.121.64.203 has a confidence score of 20%, based on 1 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

153.121.64.203

IPv4 Public

AS9370

SAKURA Internet Inc.

1 Reports

Is this your IP address? If the cause is fixed, you can request removal. Free of charge, usually decided within 48 hours. Request delisting

Japan Location

SAKURA Internet Inc. ASN 9370

1 Reports

Community Data Source

Cautionary Risk

IP 153.121.64.203 rated 5/10 from 1 security events.

Mixed behavior profile detected. Confidence: 20%.

More threatening than 39% of monitored IPs

Threat Categories

WP User Enumeration 1

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over less than a day indicates persistent threat actor operations.

First Observed 15. September 2026

Last Activity 15. September 2026

Recent (7 days) 0 incidents

Reputable Network

This IP is hosted on a network (ASN 9370) with generally good reputation. The ISP SAKURA Internet Inc. maintains standard security practices.

The malicious activity may represent an isolated compromised system rather than systematic abuse.

Security Recommendations

Apply balanced security measures based on risk tolerance.

Long-term blocking recommended.

Reputation Summary

Threat Level 5/10 Medium

Medium

Activity Frequency 2/10 Very Low

Confidence Score 8% Low Confidence

Date	Categories	Source	Confidence
15. Sep 2026	WP User Enumeration	Community	75%

Basic Information

IP Address: 153.121.64.203
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: JP
ASN: AS9370
ISP: SAKURA Internet Inc.

DNS Information

Reverse DNS: tk2-120-60699.vs.sakura.ne.jp
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 1
First Reported: 15 Sep 2026
Last Reported: 15 Sep 2026, 05:42

Network Reputation

Analysis of the entire network (ASN) that this IP address belongs to, providing context about the hosting provider and network-wide threat patterns.

Network Identity

ASN: AS9370

Organization: SAKURA Internet Inc.

Country:

Network Threat Assessment

1/10

This network appears to be relatively clean with very low threat indicators.

Network Statistics

Total IPs Monitored

Total Reports

8.2

Reports per IP

Network Context

This IP address belongs to SAKURA Internet Inc. (AS9370), which manages 6 IP addresses in our monitoring system. Out of these, 49 have been reported for suspicious activities, resulting in a network-wide threat level of 1/10.

Network status: This network appears to be well-maintained with low threat indicators.

Comparative Analysis

How this IP compares to others in our threat intelligence database

39 %

Global Threat Ranking

This IP is more threatening than 39% of all IPs in our database.

Below Average Threat

Global Comparison

Compared against 838,403 reported IPs worldwide

Threat Level 5/10 avg: 6.3 -

Total Reports 1 avg: 9 --

Network Comparison

Compared against 18 IPs in ASN 9370

Threat Level 5/10 network avg: 7.2 -

Total Reports 1 network avg: 5 --

Network SAKURA Internet Inc. has overall threat level 1/10

Geographic Comparison

Compared against 6,562 IPs in JP

Threat Level 5/10 country avg: 7.5 -

Total Reports 1 country avg: 8 --

Daily report activity over the last 30 days showing patterns and peaks.

Peak Day 15 Sep 2026 1 reports

Daily Average 0 reports/day

Most Active Tuesday 1 reports

Evolution of threat level over time based on reported categories and frequency.

Initial Threat 5/10

Current Threat 5/10

Distribution of threat categories reported over time.

Top Threat Categories

WP User Enumeration 1

Activity patterns showing when this IP is most active during the day and week.

Hourly Activity

Peak activity at 05:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

762,117 threat incidents tracked globally • Last 24h: 30,353 Logs

FEED

Top Threat Sources

01

United States US

149,106 19.6%
02

Brazil BR

112,146 14.7%
03

India IN

88,177 11.6%
04

China CN

46,269 6.1%
05

SC SC

29,255 3.8%
06

Germany DE

18,564 2.4%
07

Netherlands NL

18,107 2.4%
08

Pakistan PK

18,037 2.4%
09

Argentina AR

16,354 2.1%
10

Colombia CO

15,204 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

IPs from the same Autonomous System (AS) network provider.

17 Related IPs

7.3/10 Avg Threat

15% Avg Confidence

14 High Threat

High-risk network: Majority of related IPs are flagged

Cautionary Risk

Threat Categories

Behavioral Analysis

Reputable Network

Security Recommendations

Basic Information

Geolocation

DNS Information

Statistics

Network Reputation

Network Identity

Network Threat Assessment

Network Statistics

Network Context

Global Threat Ranking

Top Threat Categories

Hourly Activity

Weekly Activity

FEED

Top Threat Sources

JSON Report

Firewall Rules

iptables / netfilter

UFW (Ubuntu)

Windows Firewall

Cloudflare

nginx

Apache .htaccess

PDF Report

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