Is IP address 109.51.97.136 dangerous?

Yes, 109.51.97.136 is considered dangerous with a threat level of 8/10. It has been reported 14 times for malicious activities including . We recommend blocking this IP address.

Who owns or operates IP address 109.51.97.136?

IP address 109.51.97.136 is operated by Nos Comunicacoes, S.A. (ASN 2860) and is geolocated to PT. This information is derived from public WHOIS and geolocation databases.

Should I block IP address 109.51.97.136?

Yes, blocking 109.51.97.136 is strongly recommended. With a threat level of 8/10 and 14 security reports, this IP poses significant risk. Implement firewall rules to block incoming and outgoing traffic.

How accurate is this threat assessment for 109.51.97.136?

Our threat assessment for 109.51.97.136 has a confidence score of 98%, based on 14 independent reports from multiple independent sources. Higher confidence scores indicate more reliable assessments.

IP Address

109.51.97.136

IPv4 Public

AS2860

Nos Comunicacoes, S.A.

14 Reports

Portugal Location

Nos Comunicacoes, S.A. ASN 2860

14 Reports

Mixed Data Source

High Risk

IP 109.51.97.136 rated at threat level 8/10 based on 14 security reports.

Pattern analysis reveals concerning activity. Confidence: 98%.

More threatening than 85% of monitored IPs

Threat Categories

Brute-Force 7

WP Login Brute Force 7

Technical Details

Brute-force attacks systematically attempt password combinations against authentication systems.

Recommended Mitigations

Implement rate limiting, account lockout policies, multi-factor authentication, and fail2ban.

Behavioral Analysis

Activity Pattern: Consistent Activity

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

First Observed 11. July 2026

Last Activity 11. July 2026

Recent (7 days) 0 incidents

Reputable Network

This IP is hosted on a network (ASN 2860) with generally good reputation. The ISP Nos Comunicacoes, S.A. maintains standard security practices.

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

Security Recommendations

Monitor closely and consider blocking. Escalation potential detected.

Long-term blocking recommended.

Reputation Summary

Threat Level 8/10 High

Critical

Activity Frequency 4/10 Low

Confidence Score 73% High Confidence

Confidence History

28. May 2026 - 11. Jul 2026

98% Current

Stable Trend

Date	Categories	Source	Confidence
11. Jul 2026	Brute-Force	Community	75%
7. Jul 2026	WP Login Brute Force	Honeypot	75%
7. Jul 2026	WP Login Brute Force	Honeypot	75%
5. Jul 2026	WP Login Brute Force	Honeypot	75%
5. Jul 2026	WP Login Brute Force	Honeypot	75%
1. Jul 2026	Brute-Force	Community	75%
1. Jul 2026	WP Login Brute Force	Honeypot	75%
29. Jun 2026	Brute-Force	Community	75%
28. Jun 2026	WP Login Brute Force	Honeypot	75%
28. Jun 2026	Brute-Force	Community	75%
2. Jun 2026	WP Login Brute Force	Honeypot	75%
2. Jun 2026	Brute-Force	Community	75%
29. May 2026	Brute-Force	Community	75%
28. May 2026	Brute-Force	Community	75%

Basic Information

IP Address: 109.51.97.136
IP Version: IPv4
Network Type: Public
Tor Network: No
Network Class: Class A

Geolocation

Country: PT
ASN: AS2860
ISP: Nos Comunicacoes, S.A.

DNS Information

Reverse DNS: a109-51-97-136.cpe.netcabo.pt
PTR Record: Yes
Connection Type: Dynamic

Statistics

Total Reports: 14
First Reported: 28 May 2026
Last Reported: 11 Jul 2026, 14:07

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: AS2860

Organization: Nos Comunicacoes, S.A.

Country:

Network Threat Assessment

1/10

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

Network Statistics

Total IPs Monitored

387

Total Reports

25.8

Reports per IP

Network Context

This IP address belongs to Nos Comunicacoes, S.A. (AS2860), which manages 15 IP addresses in our monitoring system. Out of these, 387 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

85 %

Global Threat Ranking

This IP is more threatening than 85% of all IPs in our database.

High Threat Percentile

Global Comparison

Compared against 312,507 reported IPs worldwide

Threat Level 8/10 avg: 6.0 +

Total Reports 14 avg: 18 -

Network Comparison

Compared against 131 IPs in ASN 2860

Threat Level 8/10 network avg: 6.0 +

Total Reports 14 network avg: 5 ++

Network Nos Comunicacoes, S.A. has overall threat level 1/10

Geographic Comparison

Compared against 869 IPs in PT

Threat Level 8/10 country avg: 7.6 =

Total Reports 14 country avg: 19 -

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

Peak Day 11 Jul 2026 1 reports

Daily Average 0 reports/day

Most Active Sunday 4 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

Brute-Force 7

WP Login Brute Force 7

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

Hourly Activity

Peak activity at 01:00 with 3 reports

Weekly Activity

Geographic Threat Distribution

292,711 threat incidents tracked globally • Last 24h: 17,660 Logs

FEED

Top Threat Sources

01

United States US

65,787 22.5%
02

India IN

49,120 16.8%
03

China CN

35,633 12.2%
04

Brazil BR

15,556 5.3%
05

Germany DE

10,500 3.6%
06

Pakistan PK

8,479 2.9%
07

Indonesia ID

8,404 2.9%
08

Singapore SG

8,312 2.8%
09

Russia RU

6,394 2.2%
10

Netherlands NL

6,295 2.2%

+40 more countries

THREAT LEVEL

LOW MED HIGH

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

20 Related IPs

7.8/10 Avg Threat

65% Avg Confidence

18 High Threat

High-risk network: Majority of related IPs are flagged