Question 1

What is the technical difference between IPv4 and IPv6 addresses?

Accepted Answer

IPv4 and IPv6 represent different generations of the Internet Protocol:

① IPv4 (32-bit):
Formatted as four decimal blocks (e.g. `203.0.113.1`), yielding ~4.3 billion unique addresses globally. The IPv4 pool is completely exhausted, requiring Network Address Translation (NAT) for shared access.

② IPv6 (128-bit):
Formatted as eight hexadecimal groups (e.g. `2001:db8::1`), providing 3.4 × 10^38 addresses (virtually inexhaustible), native end-to-end encryption support, and streamlined packet routing.

Question 2

Why does my device show a public IPv4 address but no IPv6 address?

Accepted Answer

An undetected IPv6 address usually stems from several network factors:

① ISP Configuration:
Your Internet Service Provider (ISP) may not have provisioned dual-stack IPv6 connectivity on your broadband or mobile plan.

② Home Router Settings:
Many consumer Wi-Fi routers disable IPv6 DHCP/SLAAC routing by default; enabling IPv6 in the router admin panel resolves this.

③ VPN or Proxy Restrictions:
Certain VPN providers route only IPv4 traffic and deliberately disable IPv6 to prevent DNS and IPv6 leaks.

Question 3

What is Cloudflare Trace and what does the edge data center code (Colo) mean?

Accepted Answer

Cloudflare Trace provides live diagnostic metadata from your nearest edge node:

① Colo Airport Code:
Identifies the nearest Cloudflare data center handling your request (e.g., TPE for Taipei, HKG for Hong Kong, NRT for Tokyo, SFO for San Francisco).

② Protocol & Security:
Detects your client TLS cipher negotiation and the highest negotiated HTTP protocol (HTTP/2 or HTTP/3 QUIC).

Question 4

How does a Public IP address differ from a Private / Local IP address?

Accepted Answer

Their routing scopes and network boundaries differ:

① Private IP (`192.168.x.x`, `10.x.x.x`, `172.16.x.x`):
Used exclusively inside your local home or corporate network (LAN) and cannot be directly routed across the public Internet.

② Public IP:
A globally unique address assigned by your ISP that identifies your modem or gateway to the worldwide web. This tool displays your outward-facing Public IP.

Question 5

How are IP Geolocation (GeoIP) and ASN Autonomous System Numbers determined?

Accepted Answer

Location data is derived from global IP allocation databases (MaxMind, IPinfo):

① ASN (Autonomous System Number):
Identifies the carrier network routing your traffic (e.g. Chunghwa Telecom AS3462, Comcast AS7922).

② Accuracy Overview:
Geolocation is generally accurate to the country and metro city level. For privacy reasons, IP geolocation does not pinpoint individual street addresses.

Question 6

Why does this tool test latency to major public clouds (AWS, GCP, Azure, Cloudflare) and popular services?

Accepted Answer

Providing comprehensive, single-page network reachability and health diagnostics:

① Unified Global Service Reachability Audit:
Engineers and users can verify from a single dashboard whether their current network node/IP can reach major cloud infrastructure, CDNs, and critical platforms (AWS, GCP, Cloudflare, GitHub, etc.) without routing sub-optimizations or ISP throttling.

② Direct Browser Requests with Full Visibility:
All reachability tests are executed directly from your local browser to the target cloud provider endpoints—never routed through opaque third-party proxy relays. Every single request is fully inspectable in your browser Developer Tools (Network tab), guaranteeing 100% genuine and transparent metrics.

Question 7

Does this IP detection tool record, log, or track my IP history?

Accepted Answer

Never! We strictly enforce a zero-logging privacy policy:

① Direct Client-Side Requests:
All IP detection and ping measurements are dispatched in real-time by your browser. No IP addresses or test results are logged, stored, or monetized on our servers.

② Ephemeral Session Data:
All diagnostics live solely in your browser memory and are permanently cleared when you close the tab.

My IP Address & Network Diagnostics

Cloudflare Trace Diagnostics

IP Geolocation & Network Info

Cloud & CDN Service Latency Diagnostics

Frequently Asked Questions (FAQ)7 Q&As