ABUSE.MOM
THREAT REPORT

IP Threat Report
172.56.34.205

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-10-26 17:37:36
First seen: 2026-08-31 21:08:57
Last seen: 2026-09-06 01:02:48
60

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 60/100. Total malicious requests observed: 139.

BURSTUA_CHANGED
01

Geolocation & Classification

IP Address
172.56.34.205
Type
Mobile
Country
🇺🇸 United States
City
Washington
ISP
T-Mobile USA, Inc.
Organization
T-Mobile USA, Inc.
Autonomous System
AS21928 T-Mobile USA, Inc.
Hit Count
139
02

Detection Signatures

SignatureDescriptionPointsSeverity
Burst 5/2sAbnormally fast request rate — automated scanning+35
UA changedMultiple User-Agents — bot rotation technique+25
Σ = 60
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

2026-08-31 21:08:57
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Burst 5/2s (+35), UA changed (+25)
2026-09-06 01:02:48
Last malicious request observed
Total score reached: 60/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

T-Mobile USA, Inc.
AS21928 · 🇺🇸 United States

We have detected 92 malicious IPs from this autonomous system.

View all IPs from AS21928 →
06

Recommendations

Actions taken & recommended

  • IP 172.56.34.205 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

🌊 Flood / DDoS Mitigation

Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 172.56.34.205.

🤖 User-Agent Anomaly Defense

IP 172.56.34.205 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

09

Blacklist Status (DNSBL)

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

✓ Clean
psbl.surriel.com
✓ Clean
spam.dnsbl.sorbs.net
✓ Clean
dnsbl.dronebl.org
✓ Clean
cbl.abuseat.org
✓ Clean
zen.spamhaus.org
✓ Clean
b.barracudacentral.org
✓ Clean
bl.blocklist.de

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

10

Threat Analysis

172.56.34.205 has been assigned a threat score of 60/100 (High). At this threat level, the IP is considered high risk. Firewall rules should be updated to deny traffic from this source.

The following attack categories were identified:

Request FloodingUser-Agent Anomaly

📊 Threat Analysis

Our monitoring infrastructure has identified 172.56.34.205, geolocated to Washington, United States, operating on the network of T-Mobile USA, Inc., as a source of suspicious network activity. The address has been active for 5 days in our monitoring system, producing 139 flagged requests at a rate of ~27.8/day. The address belongs to a mobile carrier network. The sustained pattern of malicious requests indicates either a compromised device or deliberate abuse. The dual attack vectors of Request Flooding combined with User-Agent Anomaly indicate a coordinated assault rather than opportunistic scanning. Our records show 36,338 malicious IPs originating from United States, positioning it as a major contributor to global threat activity. The score of 60/100 warrants active monitoring and rate-limiting. Full blocking is advisable for sensitive systems.

11

Related Threats

🇺🇸 Top threats from United States

104.28.246.115 (350)104.28.214.122 (350)216.73.160.52 (350)34.187.158.4 (340)34.186.187.208 (340)View all →

🏢 Same network: AS21928

172.58.117.187 (205)172.56.157.49 (175)172.56.154.193 (140)172.58.130.107 (140)172.59.113.219 (140)View all →
12

Security Intelligence

💡 DDoS Mitigation Approaches

Distributed denial of service attacks overwhelm infrastructure with traffic volume. Effective mitigation combines always-on traffic scrubbing, anycast network distribution, rate limiting, and the ability to quickly scale absorption capacity during attacks.

💡 Email Authentication: SPF, DKIM, DMARC

Email authentication protocols work together to prevent spoofing. SPF validates sending servers, DKIM provides cryptographic message signing, and DMARC defines enforcement policies. Full implementation significantly reduces phishing effectiveness.

🔍 Check Any IP Address

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