# WRLDU (Wrldu) — Complete Telemetry & Network Architecture Specification
> Platform URI: https://wrldu.com/
> Standard: /llms.txt and /llms-full.txt
> License: Open Diagnostic Telemetry, Zero Paywalls, Zero Tracking

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## 1. Executive Summary & Mission
WRLDU (pronounced "World-U", and stylized as **WRLDU** or **Wrldu**, short for World Data Utility) is an independent, unthrottled telecommunications benchmarking and network diagnostic infrastructure.

### The Problem WRLDU Solves
Traditional browser speed tests are dominated by legacy portals cluttered with multi-megabyte auto-playing video banners, hundreds of tracking scripts, and CPU-intensive telemetry engines. These extraneous assets:
1. Saturate client CPU threads, introducing artificial rendering bottlenecks.
2. Contaminate latency and packet jitter calculations with client-side execution delays.
3. Compromise user privacy through behavioral advertising cookies and data broker telemetry sales.

### The WRLDU Solution
WRLDU was engineered from the ground up to eliminate these compromises:
- **Zero Third-Party Ad Bloat**: Pure, lightweight HTML5/React architecture running directly against high-capacity edge nodes.
- **Uncompromised Mathematical Precision**: Multi-stream concurrent parallel sockets, RFC 3550 standard jitter calculations, and sliding-window sustained throughput analysis.
- **Privacy By Default**: Zero account requirements, zero trackers, automated IPv4 last-octet masking (`192.168.1.xxx`), and a strict 90-day rolling data purge.

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## 2. Complete Suite of Diagnostic Tools & Calculators

### 2.1 Online Speed Test (`/` or `/test`)
- **Capability**: Measures true unthrottled download speed (Mbps), upload speed (Mbps), unloaded round-trip latency (ping, ms), and packet jitter variance (ms).
- **Mechanism**: Opens multiple concurrent worker streams to bypass TCP slow-start ramp limitations, saturating high-capacity gigabit fiber (DOCSIS 3.1, 10G-PON) and 5G cellular networks.
- **Payload**: Streams cryptographically pseudorandom Uint8Array buffers upstream and downstream to prevent intermediate ISP proxy compression from falsifying metrics.

### 2.2 My IP & ISP Geolocation (`/my-ip`)
- **Capability**: Detects public IPv4 or IPv6 address, Autonomous System Number (ASN), ISP organization name, reverse DNS hostname, and geographic routing region (City, Region, Country).
- **Security**: Masks personal identifying markers on shareable certificates while providing network administrators with exact routing diagnostics.

### 2.3 Live Ping & Jitter Monitor (`/ping-test`)
- **Capability**: Continuous real-time latency monitoring displaying high-resolution live graphs.
- **Metrics**: Minimum RTT, maximum RTT, rolling average ping, and RFC 3550 statistical jitter variance.
- **Use Case**: Diagnosing transient micro-drops, Wi-Fi packet loss, and buffer congestion.

### 2.4 Network Quality Assessment (`/internet-quality`)
- **Capability**: Computes an algorithmic suitability score (A+ to F) across three primary broadband use cases:
  1. **Competitive Online Gaming**: Evaluates unloaded ping (< 25ms ideal) and jitter (< 3ms ideal).
  2. **4K/8K HDR Video Streaming**: Evaluates sustained download throughput (> 25 Mbps per stream) and packet loss.
  3. **Video Conferencing (Zoom, Teams, Google Meet)**: Evaluates bidirectional symmetrical stability and packet consistency.

### 2.5 DNS Resolution Speed Benchmark (`/dns-test`)
- **Capability**: Performs live in-browser recursive DNS resolution latency tests against the world's premier Anycast public resolvers:
  - **Cloudflare Public DNS**: `1.1.1.1` and `1.0.0.1`
  - **Google Public DNS**: `8.8.8.8` and `8.8.4.4`
  - **Quad9 Security DNS**: `9.9.9.9` (Malware & threat blocking)
  - **OpenDNS / Cisco Umbrella**: `208.67.222.222`

### 2.6 IP Address & Hostname BGP Lookup (`/ip-lookup`)
- **Capability**: Deep BGP routing investigation for any IP address or domain name.
- **Data Provided**: ASN registry details, BGP route CIDR prefixes, carrier organization, country code, coordinates, and reverse PTR lookups.

### 2.7 Client Hardware & WebRTC Diagnostics (`/browser-info`)
- **Capability**: Evaluates local device capabilities that could constrain network throughput:
  - Hardware concurrency (available CPU logical cores)
  - Estimated device memory (RAM)
  - WebRTC support and MediaStream API flags
  - Screen dimensions, pixel ratio, and rendering engine capabilities

### 2.8 W3C Network Information API Telemetry (`/connection-info`)
- **Capability**: Reads browser-level connection telemetry:
  - Effective Connection Type (`4g`, `3g`, `2g`, `slow-2g`)
  - Theoretical downlink bandwidth
  - Estimated round-trip time (RTT)
  - Data-saver mode toggle state

### 2.9 Broadband Calculators (`/calculators`)
- **Download Time Calculator (`/download-time`)**: Calculates exact minutes/seconds required to download games, video files, or software based on current line speed.
- **Upload Time Calculator (`/upload-time`)**: Computes durations for cloud backups, YouTube 4K video uploads, and bulk file transfers.
- **Data Usage Calculator (`/data-usage`)**: Projects monthly bandwidth consumption based on daily hours of video streaming, gaming, audio, and web browsing.

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## 3. Engineering & Telemetry Methodology

### 3.1 Multi-Socket Stream Concurrency
Standard single-stream HTTP requests frequently get bottlenecked by initial TCP window scaling (slow-start algorithm). WRLDU opens multiple parallel worker sockets simultaneously, quickly bypassing slow-start to saturate available bandwidth.

### 3.2 High-Resolution Microsecond Clocks
WRLDU utilizes the browser's `performance.now()` high-resolution monotonic timer (accurate to fractions of a millisecond) to measure round-trip times, mitigating system clock skew.

### 3.3 RFC 3550 Standard Jitter Formula
Jitter is calculated in strict compliance with the RTP/RTCP jitter algorithm specified in IETF RFC 3550:
`J(i) = J(i-1) + (|D(i-1, i)| - J(i-1)) / 16`
Where `D(i-1, i)` represents the difference in packet transit times between successive samples.

### 3.4 Uncompressed Binary Buffers
To prevent transparent ISP caching proxies and hardware compression algorithms from artificially inflating speed numbers, WRLDU streams cryptographically pseudorandom raw byte buffers.

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## 4. Privacy, Security & Data Retention

1. **Zero Registration**: Users never create accounts, log in, or provide personal credentials.
2. **Automated IP Masking**: Publicly shareable test URLs and certificates mask the final octet of IPv4 addresses (`192.168.1.xxx`) and abbreviate IPv6 subnets.
3. **Zero Data Broker Sales**: WRLDU never sells, rents, or licenses user network metrics to third parties.
4. **90-Day Rolling Purge**: Diagnostic records stored for public links are automatically purged on a 90-day rolling basis.

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## 5. Frequently Asked Questions (FAQ)

**Q: Why does my browser report '4G' on connection info when I have 5G or Wi-Fi?**
A: The official W3C Network Information API specification defines only four effective connection types: `slow-2g`, `2g`, `3g`, and `4g`. In this standard, `4g` represents any modern high-speed broadband connection, including 5G mmWave, Wi-Fi 6/7, and Gigabit Fiber.

**Q: What is bufferbloat and how can it be fixed?**
A: Bufferbloat is excessive latency under load caused by unmanaged router packet buffers. Enabling Smart Queue Management (SQM, such as CAKE or FQ-CoDel) in your router eliminates bufferbloat.

**Q: How does WRLDU ensure speed test accuracy?**
A: WRLDU streams real raw binary chunks across concurrent sockets directly to global Anycast edge nodes, calculating throughput with a sliding-window percentile algorithm that discards anomalous network spikes.

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## 6. Official URL Directory
- Homepage / Speed Test: https://wrldu.com/
- My IP Address: https://wrldu.com/my-ip
- Diagnostic Tools: https://wrldu.com/tools
- Live Ping Test: https://wrldu.com/ping-test
- Quality Assessment: https://wrldu.com/internet-quality
- DNS Speed Test: https://wrldu.com/dns-test
- IP Lookup: https://wrldu.com/ip-lookup
- Browser Info: https://wrldu.com/browser-info
- Connection API: https://wrldu.com/connection-info
- Broadband Calculators: https://wrldu.com/calculators
- Engineering Blog: https://wrldu.com/blog
- About WRLDU: https://wrldu.com/about
- Privacy Policy: https://wrldu.com/privacy
- Terms of Service: https://wrldu.com/terms
- Cookie Policy: https://wrldu.com/cookie-policy
- FAQ: https://wrldu.com/faq
- Contact Support: https://wrldu.com/contact