Is IP address 45.156.128.171 dangerous?

Yes, 45.156.128.171 is considered dangerous with a threat level of 8/10. It has been reported 47 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 45.156.128.171?

IP address 45.156.128.171 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 45.156.128.171?

Yes, blocking 45.156.128.171 is strongly recommended. With a threat level of 8/10 and 47 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 45.156.128.171?

Our threat assessment for 45.156.128.171 has a confidence score of 75%, based on 47 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

45.156.128.171

IPv4 Public

AS211680

Sistemas Informaticos, S.A.

47 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

PT Location

Sistemas Informaticos, S.... ASN 211680

47 Reports

Mixed Data Source

Significant Threat

IP 45.156.128.171 identified as significant threat (8/10) from 47 events.

Multiple malicious indicators detected. Confidence level: 75%.

More threatening than 92% of monitored IPs

Threat Categories

WP Version Scanning 19

WP Plugin Scanning 19

WP Config Exposure 19

Hacking 10

Port Scan 1

Web App Attack 1

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over 3 weeks indicates persistent threat actor operations.

First Observed 10. October 2026

Last Activity 5. November 2026

Recent (7 days) 3 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

Implement rate limiting or temporary blocking measures.

Long-term blocking recommended.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 3/10 Low

Confidence Score 75% High Confidence

Confidence History

19. Jul 2026 - 5. Nov 2026

75% Current

Stable Trend

Date	Categories	Source	Confidence
5. Nov 2026 New	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
2. Nov 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
30. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
26. Oct 2026	Hacking	Honeypot	75%
24. Oct 2026	Port Scan Hacking Web App Attack +1	Community	75%
22. Oct 2026	Hacking	Honeypot	75%
16. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
16. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
13. Oct 2026	Hacking	Honeypot	75%
11. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
10. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
6. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
4. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
4. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
2. Oct 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
22. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
16. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
15. Sep 2026	Exploited Host	Honeypot	75%
6. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
5. Sep 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
4. Sep 2026	Hacking	Honeypot	75%
26. Aug 2026	Hacking	Honeypot	75%
23. Aug 2026	Hacking	Honeypot	75%
21. Aug 2026	Hacking	Honeypot	75%
15. Aug 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
13. Aug 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
7. Aug 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%
27. Jul 2026	Hacking	Honeypot	75%
25. Jul 2026	Hacking	Honeypot	75%
19. Jul 2026	WP Plugin Scanning WP Version Scanning WP Config Exposure	Community	75%

Basic Information

IP Address: 45.156.128.171
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-wk129d.internet-census.org
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 47
First Reported: 20 Oct 2025
Last Reported: 5 Nov 2026, 21:01

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 1,324,563 reported IPs worldwide

Threat Level 8/10 avg: 6.0 +

Total Reports 47 avg: 7 ++

Network Comparison

Compared against 316 IPs in ASN 211680

Threat Level 8/10 network avg: 8.9 =

Total Reports 47 network avg: 42 =

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

Geographic Comparison

Compared against 8,535 IPs in PT

Threat Level 8/10 country avg: 5.5 +

Total Reports 47 country avg: 4 ++

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

Peak Day 16 Oct 2026 2 reports

Daily Average 0.4 reports/day

Most Active Monday 15 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

WP Plugin Scanning 24

WP Version Scanning 24

WP Config Exposure 24

Hacking 21

Exploited Host 2

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

Hourly Activity

Peak activity at 05:00 with 9 reports

Weekly Activity

Geographic Threat Distribution

1,207,301 threat incidents tracked globally • Last 24h: 36,963 Logs

FEED

Top Threat Sources

01

Brazil BR

260,964 21.6%
02

United States US

206,380 17.1%
03

India IN

103,451 8.6%
04

China CN

50,747 4.2%
05

Argentina AR

42,390 3.5%
06

SC SC

29,444 2.4%
07

Mexico MX

27,900 2.3%
08

Russia RU

26,954 2.2%
09

Germany DE

24,272 2%
10

Colombia CO

24,263 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.1/10 Avg Threat

81% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Significant Threat

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