This is the address the internet sees when you connect. It belongs to your network, not your computer: everybody behind the same router shares it. We cannot check your IPv6 address at the moment (v6.mydchub.com has no AAAA record yet). That is our side, not yours, and it says nothing about whether your connection has IPv6.
The network is whoever announces your address to the rest of the internet, which is normally your provider. The registry entry is who it is formally assigned to. The location is an estimate from a database, not from your device, and it is often the city your provider routes through rather than the one you are sitting in.
Worth running the blocklist check if your mail has started bouncing. A home or office address that has been listed is a common cause and a fixable one, and the check costs nothing.
curl https://www.mydchub.com/myip.txt
Returns the address and nothing else, so it goes straight into a variable. No key and no account.
It is the number other computers use to send data back to you, the way a postal address decides where a letter goes. Every device on a network has one. The address shown at the top of this page is your public address: the one your router presents to the rest of the internet on behalf of everything in your home or office.
IPv4 addresses look like 103.48.119.80 and there are about four billion of them, which ran out years ago. IPv6 addresses look like 2404:2f40:1100:19::1 and there are more than anyone will use. Most connections now have both, and your device quietly picks one per connection, which is why a page can only ever see the one you arrived on.
Because your browser opened one connection, over one family, and that is the only address the server learns. Finding the other one means asking a hostname that exists on that family and on no other, so whatever address reaches it has to be yours. That is what the second card above does.
Every site you visit sees it, and so does every mail server you send through. What it reveals is your provider and a rough area, usually the city your provider routes through, which can be a long way from where you are. It does not reveal your name, your street or who you are. The location shown above is an estimate from a database, not a reading from your device.
Most home connections get a dynamic address, which the provider may change when the router restarts or on its own schedule. A static address does not change and usually costs extra. If you are allowlisting an address for a firewall or a mail server, a dynamic one will eventually break that rule without warning.
Your router's. Inside your network each device has a private address, typically starting 192.168. or 10., which nothing outside can reach. The router translates between those and the single public address shown above, so everyone in the building appears as one address from outside.
A VPN or a proxy replaces the address sites see with one belonging to the service you are using. Restarting the router sometimes gets you a new address from your provider, depending on how they hand them out. Neither makes you anonymous: the service you route through can still see the traffic, and so can your provider.
It can be. Addresses get listed on blocklists after spam is sent from them, and on a shared or dynamic address that may have been somebody else entirely. The blocklist check will say whether yours is listed and where, and the reverse DNS check covers the other common cause, which is an address with no matching name.
The address is the one that opened the connection. The reverse name comes from DNS, resolved through our own recursive resolver in Dhaka. The network and the registry entry come from the routing table and the regional registry. The location estimate comes from DB-IP. Your address is not put in any link, is never sent to our analytics, and this page is not cached, because a cached copy would show your address to whoever opened it next.