In today’s digital world, IP addresses play a crucial role in connecting devices across the internet. One such term that has gained attention is 111.90.150.402. Whether you came across this IP in your server logs, firewall reports, analytics dashboard, or suspicious traffic alerts, understanding what it represents is essential.
This comprehensive guide will explain everything about 111.90.150.402, including its structure, validity, possible risks, cybersecurity implications, and how to investigate similar IP addresses properly.
What Is 111.90.150.402?
At first glance, 111.90.150.402 appears to be an IPv4 address. IPv4 addresses consist of four octets separated by dots, and each octet must range from 0 to 255.
However, there is an important issue:
- The last octet in 111.90150.402 is 402
- Valid IPv4 octet range = 0–255
- 402 exceeds the valid limit
This means 111.90.150402 is not a valid IPv4 address.
That raises important questions:
- Is it a typo?
- Is it manipulated data?
- Is it part of malicious activity?
- Is it simply a formatting error?
Understanding this distinction is critical for website owners, network administrators, and cybersecurity professionals.
Understanding IPv4 Structure and Why 111.90150.402 Is Invalid
IPv4 addresses follow t
Each segment:
- Must be a number between 0 and 255
- Cannot exceed three digits
- Cannot contain letters
Example of valid IPv4:
- 192.168.1.1
- 111.90.150.40
But 111.90.150.402 breaks the rule, because 402 is outside the acceptable range.
If you encountered this IP in logs or data, it may indicate:
- Data corruption
- Logging error
- Manual entry mistake
- Fake or spoofed IP value
- Bot manipulation attempt
Possible Reasons You Are Seeing 111.90.15002
If you are investigating 111.90.150402, here are the most common scenarios:
1. Typographical Error
The intended IP might have been:
- 111.90.150.40
- 111.90.150.42
Even a small typo can change interpretation significantly.
2. Log Injection or Bot Activity
Cyber attackers sometimes insert malformed IP addresses to:
- Break log parsing systems
- Test server validation rules
- Attempt injection attacks
An invalid IP like 111.90.150402 may be part of automated scanning behavior.
3. Data Formatting Issues
Some software systems incorrectly concatenate numbers when:
- Importing CSV files
- Parsing server logs
- Migrating databases
In such cases, the IP may have been originally valid but incorrectly processed.
Is 111.90.150402 Dangerous?
By itself, 111.90.150.402 cannot function as a real IP address, meaning:
- It cannot route traffic
- It cannot establish a connection
- It cannot directly attack a server
However, its appearance may signal:
- Malformed request attempts
- Script-based probing
- Exploit testing
- Improper validation of input fields
If this IP appears repeatedly in logs, you should investigate deeper.
How to Verify Suspicious IP Addresses Like 111.90.150.402
When dealing with unusual IP formats, follow these steps:
Step 1: Validate IP Format
Use:
- Online IP validators
- Command-line tools
- Firewall validation rules
You will quickly confirm that 111.90.150.402 is invalid.
Step 2: Check Server Logs
Look for:
- Repeated patterns
- Associated URLs
- User agents
- HTTP status codes
Step 3: Identify Similar Valid IPs
Sometimes the correct address may be close in format:
- 111.90.150.4
- 111.90.150.42
- 111.90.150.240
Check if similar IPs appear in traffic.
Step 4: Strengthen Input Validation
Ensure your system:
- Rejects invalid IPv4 formats
- Sanitizes user input
- Filters malicious headers
IPv4 vs IPv6: Could 111.90.150.402 Be Something Else?
IPv6 addresses look very different:
Example:
2001:0db8:85a3:0000:0000:8a2e:0370:7334
Since 111.90.150.402 follows IPv4 dot-decimal format, it cannot be IPv6 either.
Therefore, this is almost certainly:
- Invalid IPv4
- Or corrupted IP data
SEO Perspective: Why People Search for 111.90.150.402
Interestingly, numeric keywords like 111.90.150.402 are often searched because:
- Users found it in analytics reports
- It appeared in firewall logs
- It showed in spam traffic
- It was referenced in suspicious activity alerts
When such numbers appear repeatedly, curiosity drives searches.
Cybersecurity Implications of Invalid IPs Like 111.90.150.402
Invalid IP addresses in logs can indicate:
1. Automated Bot Scanning
Bots test:
- Server vulnerabilities
- Input validation weaknesses
- Injection possibilities
2. Log Poisoning Attempts
Attackers sometimes attempt to insert invalid values into logs to:
- Confuse monitoring systems
- Corrupt reporting dashboards
- Evade detection tools
3. Software Bugs
Older plugins or scripts may:
- Fail to validate IP properly
- Store malformed IP addresses
- Break reporting tools
How to Protect Your Website from Suspicious IP Patterns
If you encountered 111.90.150.402, consider the following security improvements:
Enable Firewall Protection
Use:
- Cloudflare
- Sucuri
- Server-level firewall
Validate All Inputs
Ensure:
- Proper regex validation for IP fields
- Strict server-side validation
Monitor Logs Regularly
Set alerts for:
- Invalid IP formats
- Repeated malformed entries
- Unusual traffic spikes
Update Software
Keep:
- CMS updated
- Plugins updated
- Server OS patched
Technical Breakdown of 111.90.150.402
Let’s analyze each segment:
- 111 → Valid
- 90 → Valid
- 150 → Valid
- 402 → Invalid (exceeds 255)
Therefore, from a networking standpoint, 111.90.150.402 is syntactically incorrect.
Can 111.90.150.402 Be Used in Networking?
No.
Routers and networking devices:
- Automatically reject invalid octets
- Do not route malformed IPs
- Drop invalid packets
So, this address cannot function in real-world routing.
When Should You Be Concerned?
You should investigate further if:
- It appears repeatedly
- It is linked with 400 or 500 server errors
- It appears in login attempts
- It is associated with suspicious user agents
If it only appears once, it may simply be a formatting error.
Best Practices for Handling Invalid IP Entries
- Log the event
- Do not panic
- Validate surrounding data
- Cross-check similar valid IPs
- Improve input filtering
Avoid blocking random IP ranges without verification.
Frequently Asked Questions About 111.90.150.402
Is 111.90.150.402 a real IP address?
No. The last octet exceeds 255, making it invalid.
Can 111.90.150.402 hack my website?
No. It cannot function as a real IP. However, it may indicate malicious probing attempts.
Why does 111.90.150.402 appear in my logs?
Possible reasons:
- Typo
- Bot testing
- Data corruption
- Improper validation
Should I block 111.90.150.402?
There is no need to block it specifically since it is invalid. Instead, focus on improving validation and firewall rules.
Final Thoughts on 111.90.150.402
The keyword 111.90.150.402 may look like a legitimate IP address, but technically, it is invalid due to its last octet exceeding the IPv4 limit.
If you encountered this value:
- Verify your logs
- Improve input validation
- Monitor traffic behavior
- Strengthen cybersecurity measures
Most importantly, do not assume every unusual IP is a direct threat. Often, malformed IP addresses are the result of simple errors or automated scanning attempts rather than active hacking.
Understanding how IP validation works helps you stay informed and protected in an increasingly connected digital landscape.
