WHOIS provides ownership and registration information for IP addresses. It's an essential tool for network administrators, security researchers, and anyone dealing with IP addresses.
Was ist WHOIS?
WHOIS is a query-response protocol for accessing registration information about IP addresses and domain names. For IP addresses, Regional Internet Registries (RIRs) maintain WHOIS databases.
Each RIR operates its own WHOIS service: RIPE (Europe), ARIN (Americas), APNIC (Asia-Pacific), AFRINIC (Africa), and LACNIC (Latin America).
WHOIS Information Includes
A typical WHOIS lookup reveals key information.
- Organization name and address
- IP range and CIDR block
- Allocation date and RIR
- Abuse contact information
- Associated ASN (if applicable)
- Network name and status
Wie man WHOIS-Abfragen durchführt
There are several ways to look up IP WHOIS information.
Command Line
Run: whois 192.0.2.1
RIR Databases
RIPE Database, ARIN WHOIS, etc.
Web Tools
MXToolbox, WhoisXML API, IPinfo
WHOIS for Leased IPs
Wenn Sie IP-Adressen leasen, bleibt die WHOIS-Registrierung in der Regel beim ursprünglichen Eigentümer. IP Market stellt eine Dokumentation (LOA) bereit, die Ihre Berechtigung zur Nutzung der Adressen nachweist.