IP lookup
Find out who holds any public IP address: the organisation, its network block, the network (ASN) that routes it, the registered country, where to report abuse, and its reverse DNS name.
Lookups go to the public internet registries (RDAP), Team Cymru and Cloudflare DNS. Nothing is sent to Helpnyx.
How to use it
Three steps
- Enter an address. Any public IPv4 or IPv6 address.
- Read the owner. The registry record shows the organisation, network block, country and abuse contact.
- Check routing. The origin ASN is the network that announces the address on the internet. It can differ from the holder.
Questions
Good to know
Where does the data come from?
The five regional internet registries (APNIC, ARIN, RIPE NCC, LACNIC and AFRINIC) through their public RDAP service, plus Team Cymru for routing and Cloudflare DNS for the reverse name.
Does it show where a device is?
No. It shows the country the block is registered in. A device can be anywhere the network reaches.
Why is there no owner for 10.x.x.x or 192.168.x.x?
Those are private ranges. Anyone can use them inside their own network, so no registry lists an owner.
How do I report abuse from an address?
Use the abuse contact shown. It is the address the network holder publishes for spam, attacks and other abuse.
More free tools
Other tools you may need
DNS lookup
A, AAAA, MX, NS, TXT and other records for a domain.
Open the toolReverse DNS lookup
Find the PTR name for one or many IP addresses.
Open the toolFCrDNS check
Check that an IP's reverse name points back to it.
Open the toolMAC vendor lookup
Find the maker of a network device from its MAC address.
Open the toolIPv4 subnet calculator
Network, broadcast, usable range and masks for any block.
Open the toolIPv6 subnet calculator
First and last address, size, /64 count and reverse zone.
Open the tool
Still tracking IPs in a spreadsheet?
IPAM Enterprise keeps every /24, block, customer and circuit in one portal, and checks each assignment for overlaps before it is saved.