# IPDEBRIEF INTELLIGENCE BRIEFING
Subject: IP Address 5.167.67.89/32
Classification: Moderate Risk (Score: 40/100)
Generated: 2026-06-24
---
## EXECUTIVE SUMMARY
IP 5.167.67.89 is a residential endpoint hosted by ER-Telecom Holding in Cheboksary, Russia. The IP presents a moderate risk profile with no active threat indicators currently registered. However, the IP resides within a high-abuse density subnet (5.167.67.0/24), suggesting proximity to malicious activity. No immediate blocking is recommended absent corroborating threat signals, but monitoring is advised.
---
## OWNERSHIP & INFRASTRUCTURE
| Attribute | Value |
|---|---|
| **ASN** | 57026 (jsc er-telecom holding) |
| **Organization** | Network Operation Center CJSC ER-Telecom Holding Cheboksary branch |
| **Country** | RU (Russia) |
| **City** | Cheboksary |
| **Network Type** | Residential Endpoint |
| **CIDR Block** | 5.167.64.0/22 |
| **RIR** | RIPE |
The IP is assigned to a residential broadband customer of ER-Telecom Holding, a major Russian telecommunications provider. The network is not identified as cloud infrastructure, CDN, VPN, proxy, or hosting service.
---
## THREAT ASSESSMENT
| Indicator | Status |
|---|---|
| **Risk Score** | 40/100 (Moderate) |
| **Known Attacker** | No |
| **Tor Exit Node** | No |
| **Spam Source** | No |
| **Blacklist Count** | 0 |
| **DNSBL Listed** | 1 of 8 total lists |
| **Abuse Confidence Score** | Not Available |
| **Threat Feeds** | None Detected |
No active threat indicators or campaigns were identified. The IP does not appear on major threat feeds or blacklists.
---
## NEIGHBORHOOD ANALYSIS
The IP resides in subnet 5.167.67.0/24, which shows elevated abuse activity:
| Metric | Value | ||
|---|---|---|---|
| **Total Siblings** | 256 | ||
| **Active Siblings** | 178 | ||
| **Threat Siblings** | 256 | ||
| **Abuse Density** | High | ||
| **Risk Distribution** | High: 0% | Medium: 70% | Low: 30% |
The subnet demonstrates significant abuse activity, with 100% of sibling IPs flagged as threats. This contextualizes the moderate risk score as environmentally influenced rather than intrinsic to this specific IP.
---
## OBSERVATION HISTORY
Total observations: 47 signals tracked
Recent observations reveal fluctuating risk classification:
- 2026-06-24 21:22: Subnet classified as high_abuse with 132 threat siblings
- 2026-06-24 21:21: Geolocation confirmed in Cheboksary with 50 threat pulses detected
- 2026-06-24 16:55: Operator score rated "Minimal"
- 2026-06-24 10:54: Operator score rated "Minimal"
The IP shows inconsistent threat persistence, with no persistent malicious behavior detected over the observation period.
---
## NETWORK RELATIONSHIPS
Total relationships: 355
Primary network association: ERTH-CHEB-PPPOE-22-NET (multiple occurrences)
The IP shares network relationships with numerous other endpoints within the ER-Telecom Cheboksary PPPOE network infrastructure.
---
## RECOMMENDED ACTIONS
Risk Assessment: Moderate (Score: 40/100) โ No immediate blocking required
| Platform | Recommended Action |
|---|---|
| **iptables** | `iptables -A INPUT -s 5.167.67.89 -j DROP` |
| **nftables** | `nft add rule inet filter input ip saddr 5.167.67.89 drop` |
| **nginx** | `deny 5.167.67.89;` |
| **pfSense** | `5.167.67.89/32` |
| **Cloudflare WAF** | Block with expression: `ip.src eq 5.167.67.89` |
| **AWS WAF** | Add address: `5.167.67.89/32` |
Note: These recommendations are probabilistic. Blocking should be combined with additional threat signals before implementation. Given the moderate risk score and lack of active threat indicators, consider monitoring rather than blocking.
---
## ANALYST NOTES
The IP 5.167.67.89 presents a moderate risk profile primarily driven by its high-abuse subnet environment rather than intrinsic malicious behavior. The residential nature of the endpoint suggests this IP is likely a legitimate broadband user who may be affected by neighboring abuse activity. Monitor for escalation in threat indicators, particularly if the IP begins exhibiting scanning behavior or connecting to known malicious infrastructure. No immediate defensive action required absent additional corroborating signals.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
๐ข Ownership & Registration
| Organization | Network Operation Center CJSC ER-Telecom Holding Cheboksary branch |
| ASN | AS57026 |
| Network Name | โ |
| CIDR Block | โ |
| RIR | RIPE |
| Country | โ |
| Abuse Contact | Available via RDAP |
๐ DNS Intelligence
| PTR | 5x167x67x89.dynamic.cheb.ertelecom.ru |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 5x167x67x89.dynamic.cheb.ertelecom.ru |
๐ DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
โ๏ธ Network Classification
| Infrastructure | Residential |
| Service Purpose | Residential Endpoint |
| Network Tier | End-User โ Residential ISP endpoint |
๐ Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | โ |
| HTTP Title | โ |
๐ TLS Certificate
| SANs | None |
| Valid From | โ |
| Valid Until | โ |
๐ฏ Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 28% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 20% | 2 | 3 |
| reputation | 27% | 1 | 3 |
| geolocation | 24% | 2 | 3 |
| Overall | 20% | 9 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-07 23:05:24 UTC |
| Last Seen | 2026-06-26 18:12:14 UTC |
| Profile Built | 2026-06-27 05:39:07 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 48 |
Full dossier details are available via our API.