# Expert Settings Overview

Source: https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/

Evomi Residential Proxies offer advanced filtering parameters to fine-tune your proxy connections. These expert settings enable precise IP selection but incur **additional bandwidth consumption** due to increased filtering complexity.

**Note:** Expert settings are only available for **Core Residential Proxies**.

## Bandwidth Multiplier System
Each expert parameter adds a multiplier to your bandwidth usage:
- **Per-parameter multipliers**: Added cumulatively
- **Maximum cap**: 15x total multiplier

```math
Total Bandwidth Deducted = Actual Bandwidth × (Σ Multipliers)
```

### Example Calculation
| Parameters Used          | Total Multiplier | 1MB Transfer Cost |
|--------------------------|------------------|-------------------|
| 1 Parameter (4x)     | 4x               | 4MB               |
| 1 Parameter1 (2x) + Parameter2 (3x) | 5x | 5MB |
| 5 parameters totaling 20x | 15x (capped) | 15MB |

**Critical Implementation Notes**  
1. Multipliers apply **per request**  
2. Combination order doesn't affect calculation  
3. Dashboard shows actual vs. multiplied usage breakdown  
4. Enterprise customers may receive customized multiplier values

## Available Expert Parameters
Use these filters by appending them to your proxy password:

| Parameter                | Format                          | Description                                                                 |
|--------------------------|---------------------------------|-----------------------------------------------------------------------------|
| **Latency Filter**        | `_latency-<ms>`               | Maximum network latency (e.g., `_latency-500`)                             |
| **Fraudscore Filter**     | `_fraudscore-<score>`         | Maximum scamalytics.com score (e.g., `_fraudscore-10`)                    |
| **Device Filter**         | `_device-<type>`              | OS/device type: `windows`, `unix`, or `apple`                         |
| **Connection Stability**  | `_activesince-<minutes>`      | Minimum IP connection duration (e.g., `_activesince-120`)                 |
| **ISP Filter**            | `_isp-<provider>`             | Specific internet provider (e.g., `_isp-comcast`)                        |
| **ASN Filter**            | `_asn-<number>`               | Autonomous System Number filter (e.g., `_asn-AS7922`)                      |
| **Zipcode Targeting**     | `_zip-<zipcode>`              | Specific postal code area (e.g., `_zip-90210`)                            |
| **HTTP3/QUIC Support**    | `_http3-1`                    | Enable modern HTTP3/QUIC protocol compatibility                           |
| **UDP Protocol Support** | `_udp-1`                      | Full UDP protocol support (Enterprise only - manual activation required)   |
| **Extended Pool**         | `_extended-1`                 | Access 4-6x larger IP pool (cannot combine with other expert filters)     |
| **Geo Source**            | `_geosource-<source>`         | Database used to resolve geo filters, default `ipapi` (no multiplier)      |
| **Response Caching**      | `_cache-<types>`              | Cache static assets, e.g. `_cache-images` (requires certificate setup)     |

## Implementation Example
```bash
# Combined filters: fraudscore + device + latency
curl -x http://rp.evomi.com:1000 -U testuser:testpassword_fraudscore-5_device-windows_latency-100 https://ip.evomi.com/s
```

**Dashboard Monitoring**  
Your account dashboard shows:
- Actual bandwidth consumed  
- Multiplier-induced extra usage  
- Real-time multiplier values

**Optimization Tips**  
1. Start with 1-2 critical filters  
2. Monitor success rates vs bandwidth costs  
3. Use `extended-1` for large-scale operations  
4. Combine geographic filters with quality parameters

## Pages in this section

- [Ad Blocking](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/adblocking/index.md): Add adblock-1 to a Core Residential password and ads and trackers are dropped before they reach you, saving bandwidth on browser-based work.
- [Fraudscore Parameter](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/fraudscore/index.md): fraudscore- caps the Scamalytics fraud score of the Core Residential IPs you are given, for targets that are sensitive to IP reputation.
- [TCP/IP Device Filter](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/device_filter/index.md): device- selects Core Residential IPs by the TCP/IP fingerprint of the device behind them, for testing platform-specific behaviour.
- [Minimum Connection Time Filter](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/minconnection/index.md): activesince- only returns Core Residential IPs that have held a connection to our network for at least that many minutes, which suits long sticky sessions.
- [Latency Filter](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/latency/index.md): latency- caps the measured network latency of the Core Residential IPs you are given, in milliseconds, for time-sensitive requests.
- [ISP Targeting](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/isp/index.md): isp- routes Core Residential requests through a named ISP, for carrier-specific delivery testing and ad verification.
- [ASN Targeting](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/asn/index.md): Filter Core Residential IPs by autonomous system with asn-, for network-level work against one operator's infrastructure.
- [Zipcode Targeting](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/zipcode/index.md): zip- targets a postal code on Core Residential.
- [HTTP3/QUIC Protocol Support](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/http3/index.md): HTTP3 and QUIC over Core Residential need SOCKS5 and the udp.evomi.com hostname.
- [UDP Protocol Support](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/udp/index.md): UDP over Core Residential needs SOCKS5 and manual activation by support, and is limited to enterprise accounts.
- [Extended IP Pool](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/extended/index.md): extended-1 opens a larger Core Residential pool for high-volume work, but it cannot be combined with any other expert or geo parameter.
- [Geo Source Selection](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/geosource/index.md): geosource- chooses which geolocation database answers your country, region, city, ASN, ISP and zipcode filters.
- [Response Caching](https://docs.evomi.com/proxy-instructions/residential-proxies/expert-settings/caching/index.md): cache- has the proxy store static assets, scripts, stylesheets, images and fonts, and serve them from our side.