About CheckIP.ca

Operator and contact

The service is operated under the CheckIP.ca name. Administrative, accuracy, and privacy questions can be sent to admin@checkip.ca. CheckIP.ca is not presented as an internet service provider, security service, or government service.

Purpose

The site gives visitors a quick way to confirm the public IPv4 or IPv6 address used for a request. It also displays approximate country, region, city, timezone, autonomous system number (ASN), network organization, and Cloudflare edge information when those values are available.

Methodology

1. The Worker reads the connection IP supplied in Cloudflare's request headers. Its code includes standard proxy-header fallbacks for local or non-Cloudflare execution.
2. It reads network and approximate location fields attached to the request by Cloudflare.
3. It returns those values directly in the homepage or the JSON API. CheckIP.ca does not run a second IP-database lookup.
4. If latitude and longitude are available, the homepage can show an optional map after the visitor chooses to load it.

Data sources

• Cloudflare: request delivery, public IP, approximate location, timezone, ASN, network organization, and edge code.
• OpenStreetMap: map tiles and map attribution, loaded only when the optional map is opened.
• Leaflet from unpkg: the client-side map library, loaded only when the optional map is opened.

Limitations

An IP address describes a network connection, not a verified person, device, or street address. Location and network-organization data can be missing, stale, or mapped to a provider facility. VPNs and proxies usually show their exit point; mobile gateways can be far from the device; and carrier-grade NAT can make multiple customers share a public IPv4 address. Do not use these results for precise location, identity, access-control, or emergency decisions.