ABUSE.MOM
THREAT REPORT

IP Threat Report
31.111.91.42

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-21 21:38:17
First seen: 2026-05-16 22:00:07
Last seen: 2026-05-16 22:00:07
140

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 140/100. Total malicious requests observed: 1.

UA_CHANGEDRATIO_404REDIRECT_PROBEBURST
01

Geolocation & Classification

IP Address
31.111.91.42
Type
Residential
Country
🇬🇧 United Kingdom
City
Norwich
ISP
British Telecommunications PLC
Organization
Ee21
Autonomous System
AS6871 Plusnet
Hit Count
1
02

Detection Signatures

SignatureDescriptionPointsSeverity
UA changed for same IPMultiple User-Agents — bot rotation technique+25
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
Burst: 12 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 12 req / 10sAbnormally fast request rate — automated scanning+35
Σ = 140
03

Observed Activity

Reconstructed HTTP requests from server access logs. Target domains redacted for security.

[redacted]
GET
/
200
[redacted]
GET
/page
200
Requests shown: 2 · HTTP 404: 0 · Dangerous patterns: 0

* Typical request patterns for detected signatures. Actual target domains are redacted.

04

Timeline

2026-05-16 22:00:07
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
UA changed for same IP (+25), 404 ratio >= 60% (+25), Probe pattern 302->404 same path (+20)
2026-05-16 22:00:07
Last malicious request observed
Total score reached: 140/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

British Telecommunications PLC
AS6871 · 🇬🇧 United Kingdom
06

Recommendations

Actions taken & recommended

  • IP 31.111.91.42 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🤖 Bot Detection

Address UA spoofing from 31.111.91.42: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.

🔎 Path Enumeration Protection

Block scanning from 31.111.91.42: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

🌊 Traffic Flood Defense

IP 31.111.91.42 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

08

Open Ports & Services

Network reconnaissance data from Shodan. Open ports may indicate running services, misconfigurations, or potential attack surfaces.

OPEN PORTS (1)
PortServiceRiskDescription
8085UnknownLowService on port 8085

Data source: Shodan InternetDB. Scanned independently of abuse.mom.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

⛔ LISTED
zen.spamhaus.org
✓ Clean
ix.dnsbl.manitu.net
✓ Clean
dnsbl.sorbs.net
✓ Clean
dnsbl-1.uceprotect.net
✓ Clean
bl.spamcop.net
✓ Clean
b.barracudacentral.org
✓ Clean
truncate.gbudb.net
✓ Clean
psbl.surriel.com

Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.

10

Threat Analysis

31.111.91.42 has been assigned a threat score of 140/100 (Critical). This is a critical-level threat. Systems administrators should treat this IP as hostile and block all inbound connections without exception.

The following attack categories were identified:

User-Agent AnomalyPath EnumerationRequest Flooding

📊 Threat Analysis

Network traffic from 31.111.91.42, located in Norwich, United Kingdom, operating on the network of British Telecommunications PLC, has been classified as malicious by our automated threat scoring engine. The address has been active for 1 days in our monitoring system, producing 1 flagged requests at a rate of ~1/day. Operating from a residential network, this IP may represent a compromised home gateway or IoT device that has been drafted into a larger attack infrastructure. With 3 different attack patterns detected, this IP exhibits behavior characteristic of advanced automated scanning frameworks. With 102 flagged addresses, United Kingdom represents a significant presence in our threat database. At 140/100, this is an extremely high-risk address. All traffic should be considered hostile.

This IP is classified as residential, suggesting it may belong to a compromised home device, IoT botnet member, or an infected personal computer. Residential IPs involved in attacks often indicate malware infection without the owner's knowledge.

11

Related Threats

🇬🇧 Top threats from United Kingdom

104.28.208.60 (340)104.28.240.60 (340)91.230.225.3 (305)45.86.203.224 (305)45.86.203.35 (305)View all →

🏢 Same network: AS6871

46.208.203.103 (103)View all →
12

Security Intelligence

💡 User-Agent Analysis Techniques

Analyzing User-Agent strings reveals automated tools masquerading as legitimate browsers. Inconsistencies between claimed browser capabilities and actual behavior, impossible version combinations, and known scanner signatures help identify malicious clients.

💡 Race Condition Vulnerabilities

Race conditions occur when application behavior depends on the timing of concurrent operations. Attackers exploit these timing windows to bypass limits, duplicate transactions, or escalate privileges by sending carefully timed parallel requests.

🔍 Check Any IP Address

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