arin is a nonprofit, member-based organization that administers ip addresses & asns in support of the operation and growth of the internet.

the ripe ncc is one of five regional internet registries (rirs) providing internet resource allocation and registration, and coordination activities.

registro de direcciones de internet de américa latina y caribe; administra recursos de numeración de internet (ipv4 ipv6) números autónomos, resolución inversa

the internet society is a global charity empowering people to keep the internet a force for good: open, globally connected, secure, and trustworthy.

enterprise ip location by kloudend, inc - built on aws, trusted by fortune 500. free geolocation api for json, xml in php, js, java, python, node & more.

ipv6-test.com is a free service that checks your ipv6 and ipv4 connectivity and speed. diagnose connection problems, discover which address(es) you are currently using to browse the internet, and what is your browser's protocol of choice when both v6 and v4 are available.

check your ip address (ipv4 or ipv6), geographical ip location and which browser and os you are using