Is IP address 191.251.9.74 dangerous?

Yes, 191.251.9.74 is considered dangerous with a threat level of 8/10. It has been reported 5 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 191.251.9.74?

IP address 191.251.9.74 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 191.251.9.74?

Yes, blocking 191.251.9.74 is strongly recommended. With a threat level of 8/10 and 5 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 191.251.9.74?

Our threat assessment for 191.251.9.74 has a confidence score of 52%, based on 5 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

191.251.9.74

IPv4 Public

AS18881

TELEFONICA BRASIL S.A

5 Reports

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Brazil Location

TELEFONICA BRASIL S.A ASN 18881

5 Reports

Mixed Data Source

Substantial Risk

Threat level 8/10 for 191.251.9.74 based on 5 documented incidents.

Consistent suspicious behavior patterns. 52% confidence rating.

More threatening than 89% of monitored IPs

Threat Categories

SSH 5

Brute-Force 2

Technical Details

SSH attacks attempt to gain server access through password guessing or exploitation of SSH vulnerabilities.

Recommended Mitigations

Use key-based authentication, change default ports, implement fail2ban, and disable root login.

Behavioral Analysis

Activity Pattern: Consistent Activity

Steady malicious activity over 5 days indicates persistent threat actor operations.

First Observed 25. September 2026

Last Activity 30. September 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 8/10 High

Critical

Activity Frequency 0/10 Inactive

Confidence Score 52% High Confidence

Confidence History

25. Sep 2026 - 30. Sep 2026

52% Current

Stable Trend

Date	Categories	Source	Confidence
30. Sep 2026	SSH Brute-Force	Community	75%
27. Sep 2026	SSH	Honeypot	75%
27. Sep 2026	SSH Brute-Force	Community	75%
25. Sep 2026	SSH	Honeypot	75%
25. Sep 2026	SSH	Honeypot	75%

Basic Information

IP Address: 191.251.9.74
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: 191.251.9.74.dynamic.adsl.gvt.net.br
PTR Record: Yes
Connection Type: Dynamic

Statistics

Total Reports: 5
First Reported: 25 Sep 2026
Last Reported: 30 Sep 2026, 12:28

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

89 %

Global Threat Ranking

This IP is more threatening than 89% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 834,244 reported IPs worldwide

Threat Level 8/10 avg: 6.3 +

Total Reports 5 avg: 9 -

Network Comparison

Compared against 3,465 IPs in ASN 18881

Threat Level 8/10 network avg: 5.7 +

Total Reports 5 network avg: 4 +

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

Geographic Comparison

Compared against 111,912 IPs in BR

Threat Level 8/10 country avg: 5.4 +

Total Reports 5 country avg: 3 ++

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

Peak Day 25 Sep 2026 2 reports

Daily Average 0.2 reports/day

Most Active Sunday 2 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

SSH 5

Brute-Force 2

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

Hourly Activity

Peak activity at 09:00 with 1 reports

Weekly Activity

Geographic Threat Distribution

758,427 threat incidents tracked globally • Last 24h: 31,382 Logs

FEED

Top Threat Sources

01

United States US

148,464 19.6%
02

Brazil BR THIS IP

111,912 14.8%
03

India IN

87,437 11.5%
04

China CN

46,139 6.1%
05

SC SC

29,254 3.9%
06

Germany DE

18,469 2.4%
07

Netherlands NL

18,046 2.4%
08

Pakistan PK

17,851 2.4%
09

Argentina AR

16,274 2.1%
10

Colombia CO

15,173 2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

9.3/10 Avg Threat

76% 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

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