Is IP address 187.58.241.90 dangerous?

Yes, 187.58.241.90 is considered dangerous with a threat level of 7/10. It has been reported 7 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 187.58.241.90?

IP address 187.58.241.90 is operated by TELEFONICA BRASIL S.A (ASN 18881) and is geolocated to BR. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 187.58.241.90?

Yes, blocking 187.58.241.90 is strongly recommended. With a threat level of 7/10 and 7 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 187.58.241.90?

Our threat assessment for 187.58.241.90 has a confidence score of 66%, based on 7 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

187.58.241.90

IPv4 Public

AS18881

TELEFONICA BRASIL S.A

7 Reports

Brazil Location

TELEFONICA BRASIL S.A ASN 18881

7 Reports

Mixed Data Source

Substantial Risk

Threat level 7/10 for 187.58.241.90 based on 7 documented incidents.

Consistent suspicious behavior patterns. 66% confidence rating.

More threatening than 74% of monitored IPs

Threat Categories

Email Spam 4

Brute-Force 3

Technical Details

Email spam involves mass distribution of unwanted emails, often for advertising, phishing, or malware delivery.

Recommended Mitigations

Implement SPF, DKIM, DMARC, and use reputable email filtering services.

Behavioral Analysis

Activity Pattern: Consistent Activity

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

First Observed 13. May 2026

Last Activity 28. May 2026

Recent (7 days) 0 incidents

Moderate Network Risk

The network hosting this IP (ASN 18881, operated by TELEFONICA BRASIL S.A) shows moderate threat indicators. Some concerning activity has been detected from neighboring addresses.

Consider the network context when assessing this individual IP.

Security Recommendations

Configure firewall rules and intrusion detection alerts.

Long-term blocking recommended.

Reputation Summary

Threat Level 7/10 High

High

Activity Frequency 2/10 Very Low

Confidence Score 56% High Confidence

Confidence History

8. May 2026 - 28. May 2026

66% Current

Stable Trend

Date	Categories	Source	Confidence
28. May 2026	Brute-Force	Community	75%
24. May 2026	Brute-Force	Community	75%
15. May 2026	Brute-Force	Community	75%
13. May 2026	Email Spam	Honeypot	75%
10. May 2026	Email Spam	Honeypot	75%
9. May 2026	Email Spam	Honeypot	75%
8. May 2026	Email Spam	Honeypot	75%

Basic Information

IP Address: 187.58.241.90
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class B

Geolocation

Country: BR
ASN: AS18881
ISP: TELEFONICA BRASIL S.A

DNS Information

Reverse DNS: ccabv.org.cta.gvt.net.br
PTR Record: Yes
Connection Type: Static

Statistics

Total Reports: 7
First Reported: 8 May 2026
Last Reported: 28 May 2026, 10:15

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: AS18881

Organization: TELEFONICA BRASIL S.A

Country:

Network Threat Assessment

5/10

This network has low threat indicators with minimal suspicious activity.

Network Statistics

376

Total IPs Monitored

9,390

Total Reports

Reports per IP

Network Context

This IP address belongs to TELEFONICA BRASIL S.A (AS18881), which manages 376 IP addresses in our monitoring system. Out of these, 9,390 have been reported for suspicious activities, resulting in a network-wide threat level of 5/10.

Network notice: This network shows some suspicious activity patterns. Monitor interactions with IPs from this ASN.

Comparative Analysis

How this IP compares to others in our threat intelligence database

74 %

Global Threat Ranking

This IP is more threatening than 74% of all IPs in our database.

Above Average Threat

Global Comparison

Compared against 202,552 reported IPs worldwide

Threat Level 7/10 avg: 5.4 +

Total Reports 7 avg: 23 --

Network Comparison

Compared against 596 IPs in ASN 18881

Threat Level 7/10 network avg: 5.2 +

Total Reports 7 network avg: 16 --

Network TELEFONICA BRASIL S.A has overall threat level 5/10

Geographic Comparison

Compared against 10,363 IPs in BR

Threat Level 7/10 country avg: 5.5 +

Total Reports 7 country avg: 14 -

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

Peak Day 13 May 2026 1 reports

Daily Average 0.1 reports/day

Most Active Sunday 2 reports

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

Initial Threat 3/10

Current Threat 4/10

Distribution of threat categories reported over time.

Top Threat Categories

Email Spam 4

Brute-Force 3

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

Hourly Activity

Peak activity at 10:00 with 2 reports

Weekly Activity

Geographic Threat Distribution

190,022 threat incidents tracked globally • Last 24h: 19,143 Logs

FEED

Top Threat Sources

01

United States US

38,880 20.5%
02

India IN

29,907 15.7%
03

China CN

26,166 13.8%
04

Brazil BR THIS IP

10,363 5.5%
05

Germany DE

7,258 3.8%
06

Singapore SG

6,519 3.4%
07

Indonesia ID

5,651 3%
08

Pakistan PK

4,809 2.5%
09

Russia RU

4,766 2.5%
10

Netherlands NL

4,432 2.3%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

8.4/10 Avg Threat

79% Avg Confidence

20 High Threat

High-risk network: Majority of related IPs are flagged

Substantial Risk

Threat Categories

Technical Details

Recommended Mitigations

Behavioral Analysis

Moderate Network Risk

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

reportedIP

Parkstraße 19, 80339 München

Consultation

+49-89-215505888

Report a IP

[email protected]