Is IP address 45.156.128.123 dangerous?

Yes, 45.156.128.123 is considered dangerous with a threat level of 8/10. It has been reported 34 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 45.156.128.123?

IP address 45.156.128.123 is operated by Sistemas Informaticos, S.A. (ASN 211680) and is geolocated to PT. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 45.156.128.123?

Yes, blocking 45.156.128.123 is strongly recommended. With a threat level of 8/10 and 34 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 45.156.128.123?

Our threat assessment for 45.156.128.123 has a confidence score of 69%, based on 34 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

45.156.128.123

IPv4 Public

AS211680

Sistemas Informaticos, S.A.

34 Reports

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PT Location

Sistemas Informaticos, S.... ASN 211680

34 Reports

Mixed Data Source

Substantial Risk

Threat level 8/10 for 45.156.128.123 based on 34 documented incidents.

Consistent suspicious behavior patterns. 69% confidence rating.

More threatening than 92% of monitored IPs

Threat Categories

WP Plugin Scanning 16

WP Version Scanning 15

WP Config Exposure 15

Hacking 12

Bad Web Bot 1

Web App Attack 1

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over 2 weeks indicates persistent threat actor operations.

First Observed 6. October 2026

Last Activity 26. October 2026

Recent (7 days) 2 incidents

Reputable Network

This IP is hosted on a network (ASN 211680) with generally good reputation. The ISP Sistemas Informaticos, S.A. maintains standard security practices.

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

Security Recommendations

Configure firewall rules and intrusion detection alerts.

Long-term blocking recommended.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 1/10 Very Low

Confidence Score 69% High Confidence

Confidence History

28. Mar 2026 - 26. Oct 2026

69% Current

Stable Trend

Date	Categories	Source	Confidence
26. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
23. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
14. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
12. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
6. Oct 2026	Bad Web Bot Web App Attack	Community	75%
27. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
25. Sep 2026	IoT Targeted	Honeypot	75%
17. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
11. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
10. Sep 2026	Hacking	Honeypot	75%
10. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
29. Aug 2026	Hacking	Honeypot	75%
17. Aug 2026	Hacking	Honeypot	75%
16. Aug 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
15. Aug 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
12. Aug 2026	Hacking	Honeypot	75%
11. Aug 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
10. Aug 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
31. Jul 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
4. Jul 2026	Hacking	Honeypot	75%
3. Jul 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
29. Jun 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
18. Jun 2026	Hacking	Honeypot	75%
18. Jun 2026	WP Plugin Exploit WP Plugin Scanning	Community x2	75%
18. Jun 2026	Port Scan Hacking	Community	75%
17. Jun 2026	Hacking	Honeypot	75%
11. Jun 2026	Hacking	Honeypot	75%
25. May 2026	Hacking	Honeypot	75%
9. Apr 2026	Hacking	Honeypot	75%
28. Mar 2026	Hacking	Honeypot	75%

Basic Information

IP Address: 45.156.128.123
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: PT
ASN: AS211680
ISP: Sistemas Informaticos, S.A.

DNS Information

Reverse DNS: sh-ams-nl-gp6-wk109c.internet-census.org
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 34
First Reported: 1 Feb 2026
Last Reported: 26 Oct 2026, 09:22

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: AS211680

Organization: Sistemas Informaticos, S.A.

Country:

Network Threat Assessment

1/10

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

Network Statistics

249

Total IPs Monitored

3,813

Total Reports

15.3

Reports per IP

Network Context

This IP address belongs to Sistemas Informaticos, S.A. (AS211680), which manages 249 IP addresses in our monitoring system. Out of these, 3,813 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

92 %

Global Threat Ranking

This IP is more threatening than 92% of all IPs in our database.

Top 10% Most Dangerous

Global Comparison

Compared against 1,290,854 reported IPs worldwide

Threat Level 8/10 avg: 6.0 +

Total Reports 34 avg: 7 ++

Network Comparison

Compared against 295 IPs in ASN 211680

Threat Level 8/10 network avg: 8.9 =

Total Reports 34 network avg: 44 -

Network Sistemas Informaticos, S.A. has overall threat level 1/10

Geographic Comparison

Compared against 8,420 IPs in PT

Threat Level 8/10 country avg: 5.5 +

Total Reports 34 country avg: 4 ++

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

Peak Day 6 Oct 2026 1 reports

Daily Average 0.2 reports/day

Most Active Thursday 8 reports

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

Initial Threat 6/10

Current Threat 6/10

Distribution of threat categories reported over time.

Top Threat Categories

Hacking 16

WP Plugin Scanning 16

WP Version Scanning 15

WP Config Exposure 15

Web App Attack 2

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

Hourly Activity

Peak activity at 02:00 with 3 reports

Weekly Activity

Geographic Threat Distribution

1,176,719 threat incidents tracked globally • Last 24h: 30,042 Logs

FEED

Top Threat Sources

01

Brazil BR

258,593 22%
02

United States US

199,482 17%
03

India IN

102,476 8.7%
04

China CN

49,579 4.2%
05

Argentina AR

41,945 3.6%
06

SC SC

29,411 2.5%
07

Mexico MX

27,436 2.3%
08

Russia RU

26,492 2.3%
09

Colombia CO

24,027 2%
10

Germany DE

22,783 1.9%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

8.8/10 Avg Threat

85% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Substantial 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

Analyzed high-risk IP addresses