Quick check: See if an IP shows risk signals using the MyIPNow IP Blacklist Check.
What is an IP reputation score?
An IP reputation score is a risk-based assessment used by security systems, email providers, and web services to evaluate whether an IP address is likely to be abusive or trustworthy.
Factors that influence IP reputation
Download CSV| Factor | What it measures | Impact on score | Data source |
|---|---|---|---|
| Spam activity | Email spam volume | Very high | DNSBL / reputation feeds |
| Malware traffic | C2 or payload hosting | Very high | Threat intel feeds |
| Open ports | Exposed services | Medium | Port scans |
| Proxy / VPN usage | Anonymization signals | Medium | Heuristics |
| Shared hosting | Multiple tenants | Low–Medium | ASN analysis |
| IP age | Newly allocated IP | Medium | RIR data |
| User reports | Manual abuse reports | Medium | Abuse desks |
| Blacklist listings | Active DNSBLs | High | Blacklist aggregation |
| Traffic patterns | Request frequency | Medium | Behavioral models |
IP reputation vs IP blacklists
- Blacklists are binary (listed or not).
- Reputation scores are continuous risk assessments.
- An IP may have poor reputation without blacklist listings.
How reputation scores are used
- Email filtering and deliverability
- Fraud detection and bot mitigation
- Rate limiting and access control