# 83.135.184.56 — IP Intelligence Summary

83.135.184.56 is an IPv4 address operated by 1&1 Versatel GmbH (AS8881), geolocated to Berlin, Germany. Its reverse DNS name is i5387B838.versanet.de. As of October 6, 2026, IPDebrief rates it Moderate Risk (40/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/83.135.184.56
- Last updated: 2026-10-06

## Ownership

- Organization: 1&1 Versatel GmbH
- Network name: VT-Customer-POOL
- Allocated block: 83.135.184.0/21
- ASN: AS8881 (https://ipdebrief.com/asn/8881)
- Regional registry: RIPE

## Location

- City: Berlin
- Region: North Rhine-Westphalia
- Country: Germany
- Time zone: Europe/Berlin

## Network classification

- Infrastructure type: —
- Datacenter / hosting: no
- Residential: no
- Mobile: no
- Anycast: no
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Moderate Risk (40/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- i5387B838.versanet.de
- Forward-confirmed: yes

## Analyst narrative

\# INTELLIGENCE BRIEFING: IP 83.135.184.56/32

**Classification:** Moderate Risk | **Date:** 2026-07-24 | **Status:** Active

\---

\## EXECUTIVE SUMMARY

IP 83.135.184.56 is a customer endpoint within the 1&1 Versatel GmbH network infrastructure (ASN 8881, 83.135.184.0/21). The address presents a moderate risk profile with current threat indicators but lacks active malicious activity. No open services are detected; the host appears firewalled.

\---

\## OWNERSHIP AND GEOGRAPHY

| Attribute | Value |

|-----------|-------|

| Organization | 1&1 Versatel GmbH |

| Network Name | VT-Customer-POOL |

| ASN | 8881 |

| CIDR Block | 83.135.184.0/21 |

| Country | Germany (DE) |

| Region | North Rhine-Westphalia |

| City | Berlin |

Geolocation data shows consensus across 3 sources with DNSSEC validation enabled.

\---

\## THREAT ASSESSMENT

**Current Risk Score:** 40 (Moderate)

**Threat Indicators:**

\- DNSBL Listings: 2 of 8 total blacklists

\- DNSBL Severity: High

\- Is Tor Exit: No

\- Is Known Attacker: No

\- Is Spam Source: No

\- Active Threat Campaigns: None detected

**Services:** No open ports detected. Network role classified as "Firewalled / No Services."

\---

\## OBSERVATION HISTORY

Signal observation history contains 16 recorded observations. Recent activity (2026-07-24) indicates:

\- **DNSBL Listings:** Confirmed presence on 2 blacklists with high severity classification

\- **Ownership Stability:** No ownership changes detected

\- **Threat Persistence:** 0 days of persistent malicious activity

\- **Operator Score:** 0.2609 (Basic classification)

\- **Malicious Classification:** Not persistently malicious

\---

\## NETWORK RELATIONSHIPS

The IP maintains associations within the Versatel customer network:

\- **DNS Association:** i5387B838.versanet.de (versanet.de)

\- **Network Association:** VT-Customer-POOL (83.135.184.0/21)

No cross-organizational or campaign-level correlations detected.

\---

\## NEIGHBORHOOD ANALYSIS

**Subnet:** 83.135.184.0/24

| Metric | Value |

|--------|-------|

| Total Siblings | 3 |

| Abuse Density | 0 |

| High Risk Siblings | 0 |

| Medium Risk Siblings | 0 |

| Low Risk Siblings | 3 |

**Sibling IP Risk Scores:**

\- 83.135.184.20: Risk 0

\- 83.135.184.67: Risk 15

\- 83.135.184.81: Risk 0

The /24 subnet demonstrates low abuse density with no high-risk neighbors.

\---

\## OPERATIONAL CONTEXT

\- **Connection Type:** Residential/Enterprise

\- **Infrastructure Type:** Not CDN, Cloud, VPN, or Proxy

\- **Network Stability:** BGP prefix stable with 0 route changes in 30 days

\- **Reverse DNS:** i5387B838.versanet.de (confirmed)

\- **Email Authentication:** SPF record present; DMARC not configured

\---

\## RECOMMENDATIONS

**Action Priority:** Monitor

1. **Allow List Evaluation:** Current risk profile supports allow-listing for business traffic, pending verification of legitimate use case

2. **DNSBL Investigation:** Investigate root cause of 2 DNSBL listings if outbound mail flow is expected

3. **Traffic Baseline:** Establish normal traffic patterns for this endpoint; no open services detected

4. **Continued Monitoring:** Monitor for escalation to medium or high risk thresholds

\---

**END OF BRIEFING**

## Nearby addresses

- 83.135.184.20 (https://ipdebrief.com/83.135.184.20)
- 83.135.184.67 (https://ipdebrief.com/83.135.184.67)
- 83.135.184.81 (https://ipdebrief.com/83.135.184.81)

---

Source: IPDebrief, "83.135.184.56 IP intelligence", https://ipdebrief.com/83.135.184.56, updated 2026-10-06. Assessments are probabilistic.