IP Address Info
Shows your public IP or any address with its reverse name, ASN, announcing network, prefix and registry country from Team Cymru’s DNS data — no city-level geolocation.
What is behind an IP address: its reverse name, the autonomous system announcing it, the prefix it sits in and the registry that allocated it. Everything comes from DNS — PTR for the name, Team Cymru’s IP-to-ASN zone for the rest — so nothing ever connects to the address itself.
The address is looked up through DNS only — the reverse name from PTR, the owning network from the IP-to-ASN data Team Cymru publishes as DNS TXT. We never connect to the address itself. The country is the one the address range is registered to at its regional registry, not where anyone is sitting, and there is no city-level location here at all.
How to use it
Look up your own address, or paste one
“Show my IP” fills in the public address you are connecting from. Any IPv4 or IPv6 address can be typed in instead.
Read the reverse name
A PTR record often names the operator and the datacentre in plain text — it is the fastest way to tell a hosting provider from a home connection. Many addresses have none, and that is normal.
Use the ASN to identify the network
The AS number and name are who actually announces the address to the internet — the hosting company, the carrier, or the organisation itself. That is a firmer fact than any geolocation.
Common questions
Why is there no city?
Because there is no honest way to get one from this data. The country shown is the country the address block was *registered* in at its regional registry — a Korean company can hold a block registered in the US, and a VPN moves you entirely. City-level geolocation is a commercial guess, and this page would rather say nothing than guess.
Does the address get contacted?
No. Every field here comes from a DNS query. Nothing is sent to the address, so nobody at the other end sees a connection from you or from us.
It says the address is not announced
The block is not in the global routing table right now: unallocated space, an internal range, or a prefix its holder has withdrawn. It is a fact about routing, not an error in the lookup.
Can I find who used this address?
Not from here, and not from anywhere public. Only the network operator holds the assignment logs, and they release them to a lawful request, not to a lookup page.
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