WHOIS
Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
### IANA response (whois.iana.org) % IANA WHOIS server % for more information on IANA, visit http://www.iana.org % This query returned 1 object refer: whois.lacnic.net inetnum: 201.0.0.0 - 201.255.255.255 organisation: LACNIC status: ALLOCATED whois: whois.lacnic.net changed: 2003-04 source: IANA ### Registry response (whois.lacnic.net) % IP Client: 2001:41d0:305:2100:0:0:0:5cfe % Joint Whois - whois.lacnic.net % This server accepts single ASN, IPv4 or IPv6 queries % LACNIC resource: whois.lacnic.net % Copyright LACNIC lacnic.net % The data below is provided for information purposes % and to assist persons in obtaining information about or % related to AS and IP numbers registrations % By submitting a whois query, you agree to use this data % only for lawful purposes. % 2026-03-26 14:57:09 (-03 -03:00) inetnum: 201.222.48.0/21 status: allocated aut-num: AS28103 owner: TECNOLOGIA EN ELECTRONICA E INFORMATICA SOCIEDAD ANONIMA (T.E.I.S.A) ownerid: PY-TEIS-LACNIC responsible: Jaime Egüez address: Cecilio Da Silva, 1001, Federación Rusa address: - - Asuncion - country: PY phone: +595 216164000 [0000] owner-c: TIA2 tech-c: TIA2 abuse-c: TIA2 inetrev: 201.222.49.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 nserver: NS2.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 nserver: NS1.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 inetrev: 201.222.50.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 nserver: NS2.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 nserver: NS1.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 inetrev: 201.222.48.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 nserver: NS2.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 nserver: NS1.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 inetrev: 201.222.51.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260326 AA nslastaa: 20260326 nserver: NS2.TEISA.COM.PY nsstat: 20260326 AA nslastaa: 20260326 nserver: NS1.TEISA.COM.PY nsstat: 20260326 AA nslastaa: 20260326 inetrev: 201.222.55.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260326 AA nslastaa: 20260326 nserver: NS2.TEISA.COM.PY nsstat: 20260326 AA nslastaa: 20260326 nserver: NS1.TEISA.COM.PY nsstat: 20260326 AA nslastaa: 20260326 inetrev: 201.222.54.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 nserver: NS2.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 nserver: NS1.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 inetrev: 201.222.52.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 nserver: NS2.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 nserver: NS1.TEISA.COM.PY nsstat: 20260325 AA nslastaa: 20260325 inetrev: 201.222.53.0/24 nserver: NS3.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 nserver: NS2.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 nserver: NS1.TEISA.COM.PY nsstat: 20260324 AA nslastaa: 20260324 created: 20121003 changed: 20121003 nic-hdl: TIA2 person: Miguel Sanchez e-mail: ipadmin@teisa.com.py address: Cecilio Da Silva, 1001, esq. Federación Rusa address: 1527 - Asunción - Ce country: PY phone: +595 216164000 [212] created: 20120213 changed: 20240215 % whois.lacnic.net accepts only direct match queries. % Types of queries are: POCs, ownerid, CIDR blocks, IP % and AS numbers.
Frequently Asked Questions
What is WHOIS?
WHOIS is a protocol that queries databases to find the registered owner of a domain name or IP address. It reveals the registrar, registration dates, nameservers, and contact information associated with a domain or IP block.
Is WHOIS data always accurate?
Not always. Many domain registrars offer WHOIS privacy protection that replaces the registrant's personal details with proxy information. IP WHOIS data from Regional Internet Registries (RIRs) is generally more reliable than domain WHOIS data.
Can I use WHOIS to find who owns an IP address?
Yes. Enter any IP address into the WHOIS tool to find the organization that owns the IP block, the Regional Internet Registry (ARIN, RIPE, APNIC, etc.) that allocated it, and the network range it belongs to.
What is the difference between domain WHOIS and IP WHOIS?
Domain WHOIS shows registration details like the registrar, creation date, expiry date, and nameservers. IP WHOIS shows the network allocation, the organization that owns the IP block, and the abuse contact for reporting issues.
Why does WHOIS show privacy protection instead of real details?
Domain registrars offer WHOIS privacy services to protect registrants from spam, identity theft, and unwanted contact. GDPR regulations in Europe also require redaction of personal data from WHOIS records.
How often is WHOIS data updated?
WHOIS data is updated by the registrar or registry whenever changes are made to a domain or IP registration. Our tool queries the authoritative WHOIS server in real-time, with results cached for 7 days to reduce server load.
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