Skip to content
ipaddress
.si
IP Lookup
Tools
IP Lookup
ASN, ISP, route, reverse DNS and location for any address.
IPv4 Lookup
Details and formats for any IPv4 address.
IPv6 Lookup
Details, expansion and compression for any IPv6 address.
IP Location
Approximate geolocation with sources and accuracy.
DNS Lookup
A, AAAA, MX, TXT, NS, SOA, CAA and more with TTLs.
Reverse DNS
PTR records with forward confirmation.
WHOIS / RDAP
Registration data for domains, IP networks and ASNs.
ASN Lookup
Holder, registry and every prefix an AS announces.
IP Range to CIDR
Convert an address range into the smallest set of CIDR blocks.
CIDR Calculator
Network, broadcast, masks and host counts for any prefix.
All tools →
Learn
IPv4 explained
IPv6 explained
DNS records
Autonomous systems
How IP geolocation works
ASN
Blog
Search IPs, domains, ASNs, tools…
⌘ K
en
en
English
tr
Türkçe
de
Deutsch
fr
Français
es
Español
ja
日本語
zh
简体中文
ko
한국어
hi
हिन्दी
ru
Русский
Home
WHOIS & RDAP Lookup
_dmarc._dmarc.cloudflare.com
WHOIS / RDAP
_dmarc._dmarc.cloudflare.com
Look up
Look up
Slow down a little
You've made a lot of requests in a short time. Please wait 7 seconds and try again.